diff options
Diffstat (limited to 'src/kernel/qfontengine_p.h')
| -rw-r--r-- | src/kernel/qfontengine_p.h | 632 |
1 files changed, 632 insertions, 0 deletions
diff --git a/src/kernel/qfontengine_p.h b/src/kernel/qfontengine_p.h new file mode 100644 index 000000000..91abbb594 --- /dev/null +++ b/src/kernel/qfontengine_p.h @@ -0,0 +1,632 @@ +/**************************************************************************** +** +** ??? +** +** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved. +** +** 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 retquirements 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 TQFONTENGINE_P_H +#define TQFONTENGINE_P_H + +#ifndef QT_H +#include "qglobal.h" +#endif // QT_H + +#ifdef Q_WS_WIN +#include "qt_windows.h" +#include "qptrdict.h" +#endif + +#include "qtextengine_p.h" + +class TQPaintDevice; + +struct glyph_metrics_t; +class TQChar; +typedef unsigned short glyph_t; +struct qoffset_t; +typedef int advance_t; +class TQOpenType; +struct TransformedFont; + +#if defined( Q_WS_X11 ) || defined( Q_WS_WIN) || defined( Q_WS_MAC ) +class TQFontEngine : public TQShared +{ +public: + enum Error { + NoError, + OutOfMemory + }; + + enum Type { + // X11 types + Box, + XLFD, + LatinXLFD, + Xft, + + // MS Windows types + Win, + Uniscribe, + + // Apple MacOS types + Mac, + + // Trolltech TQWS types + TQWS + }; + + TQFontEngine() { + count = 0; cache_count = 0; +#ifdef Q_WS_X11 + transformed_fonts = 0; +#endif + } + virtual ~TQFontEngine(); + + /* returns 0 as glyph index for non existant glyphs */ + virtual Error stringToCMap( const TQChar *str, int len, glyph_t *glyphs, + advance_t *advances, int *nglyphs, bool mirrored ) const = 0; + +#ifdef Q_WS_X11 + virtual int cmap() const { return -1; } + virtual TQOpenType *openType() const { return 0; } +#endif + + virtual void draw( TQPainter *p, int x, int y, const TQTextEngine *engine, const TQScriptItem *si, int textFlags ) = 0; + + virtual glyph_metrics_t boundingBox( const glyph_t *glyphs, + const advance_t *advances, + const qoffset_t *offsets, int numGlyphs ) = 0; + virtual glyph_metrics_t boundingBox( glyph_t glyph ) = 0; + + virtual int ascent() const = 0; + virtual int descent() const = 0; + virtual int leading() const = 0; + + virtual int lineThickness() const; + virtual int underlinePosition() const; + + virtual int maxCharWidth() const = 0; + virtual int minLeftBearing() const { return 0; } + virtual int minRightBearing() const { return 0; } + + virtual const char *name() const = 0; + + virtual bool canRender( const TQChar *string, int len ) = 0; + + virtual void setScale( double ) {} + virtual double scale() const { return 1.; } + + virtual Type type() const = 0; + + TQFontDef fontDef; + uint cache_cost; // amount of mem used in kb by the font + int cache_count; + +#ifdef Q_WS_WIN + HDC dc() const; + void getGlyphIndexes( const TQChar *ch, int numChars, glyph_t *glyphs, bool mirrored ) const; + void getCMap(); + + TQCString _name; + HDC hdc; + HFONT hfont; + LOGFONT logfont; + uint stockFont : 1; + uint paintDevice : 1; + uint useTextOutA : 1; + uint ttf : 1; + uint symbol : 1; + union { + TEXTMETRICW w; + TEXTMETRICA a; + } tm; + int lw; + unsigned char *cmap; + void *script_cache; + static TQPtrDict<TQFontEngine> cacheDict; + short lbearing; + short rbearing; +#endif // Q_WS_WIN +#ifdef Q_WS_X11 + TransformedFont *transformed_fonts; +#endif +}; +#elif defined( Q_WS_QWS ) +class TQGfx; + +class TQFontEngine : public TQShared +{ +public: + TQFontEngine( const TQFontDef&, const TQPaintDevice * = 0 ); + ~TQFontEngine(); + /*TQMemoryManager::FontID*/ void *handle() const; + + enum Type { + // X11 types + Box, + XLFD, + Xft, + + // MS Windows types + Win, + Uniscribe, + + // Apple MacOS types + Mac, + + // Trolltech TQWS types + Qws + }; + + enum TextFlags { + Underline = 0x01, + Overline = 0x02, + StrikeOut = 0x04 + }; + + enum Error { + NoError, + OutOfMemory + }; + /* returns 0 as glyph index for non existant glyphs */ + Error stringToCMap( const TQChar *str, int len, glyph_t *glyphs, advance_t *advances, int *nglyphs, bool mirrored ) const; + + void draw( TQPainter *p, int x, int y, const TQTextEngine *engine, const TQScriptItem *si, int textFlags ); + + glyph_metrics_t boundingBox( const glyph_t *glyphs, + const advance_t *advances, const qoffset_t *offsets, int numGlyphs ); + glyph_metrics_t boundingBox( glyph_t glyph ); + + int ascent() const; + int descent() const; + int leading() const; + int maxCharWidth() const; + int minLeftBearing() const; + int minRightBearing() const; + int underlinePosition() const; + int lineThickness() const; + + Type type() { return Qws; } + + bool canRender( const TQChar *string, int len ); + inline const char *name() const { return 0; } + TQFontDef fontDef; + /*TQMemoryManager::FontID*/ void *id; + int cache_cost; + int cache_count; + int scale; +}; +#endif // WIN || X11 || MAC + + + +enum IndicFeatures { + CcmpFeature, + InitFeature, + NuktaFeature, + AkhantFeature, + RephFeature, + BelowFormFeature, + HalfFormFeature, + PostFormFeature, + VattuFeature, + PreSubstFeature, + AboveSubstFeature, + BelowSubstFeature, + PostSubstFeature, + HalantFeature +}; + +#if defined(Q_WS_X11) || defined(Q_WS_WIN) +class TQFontEngineBox : public TQFontEngine +{ +public: + TQFontEngineBox( int size ); + ~TQFontEngineBox(); + + Error stringToCMap( const TQChar *str, int len, glyph_t *glyphs, advance_t *advances, int *nglyphs, bool mirrored ) const; + + void draw( TQPainter *p, int x, int y, const TQTextEngine *engine, const TQScriptItem *si, int textFlags ); + + virtual glyph_metrics_t boundingBox( const glyph_t *glyphs, + const advance_t *advances, const qoffset_t *offsets, int numGlyphs ); + glyph_metrics_t boundingBox( glyph_t glyph ); + + int ascent() const; + int descent() const; + int leading() const; + int maxCharWidth() const; + int minLeftBearing() const { return 0; } + int minRightBearing() const { return 0; } + +#ifdef Q_WS_X11 + int cmap() const; +#endif + const char *name() const; + + bool canRender( const TQChar *string, int len ); + + Type type() const; + inline int size() const { return _size; } + +private: + friend class TQFontPrivate; + int _size; +}; +#endif + +#ifdef Q_WS_X11 +#include "qt_x11_p.h" + + +struct TransformedFont +{ + float xx; + float xy; + float yx; + float yy; + union { + Font xlfd_font; +#ifndef QT_NO_XFTFREETYPE + XftFont *xft_font; +#endif + }; + TransformedFont *next; +}; + +#ifndef QT_NO_XFTFREETYPE +#include <ft2build.h> +#include FT_FREETYPE_H +#include "ftxopen.h" + +class TQTextCodec; + +class TQFontEngineXft : public TQFontEngine +{ +public: + TQFontEngineXft( XftFont *font, XftPattern *pattern, int cmap ); + ~TQFontEngineXft(); + + TQOpenType *openType() const; + + Error stringToCMap( const TQChar *str, int len, glyph_t *glyphs, advance_t *advances, int *nglyphs, bool mirrored ) const; + + void draw( TQPainter *p, int x, int y, const TQTextEngine *engine, const TQScriptItem *si, int textFlags ); + + virtual glyph_metrics_t boundingBox( const glyph_t *glyphs, + const advance_t *advances, const qoffset_t *offsets, int numGlyphs ); + glyph_metrics_t boundingBox( glyph_t glyph ); + + int ascent() const; + int descent() const; + int leading() const; + int lineThickness() const; + int underlinePosition() const; + int maxCharWidth() const; + int minLeftBearing() const; + int minRightBearing() const; + + int cmap() const; + const char *name() const; + + void setScale( double scale ); + double scale() const { return _scale; } + + bool canRender( const TQChar *string, int len ); + + Type type() const; + XftPattern *pattern() const { return _pattern; } + FT_Face face() const { return _face; } + XftFont *font() const { return _font; } + + void recalcAdvances( int len, glyph_t *glyphs, advance_t *advances ); + +private: + friend class TQFontPrivate; + friend class TQOpenType; + XftFont *_font; + XftPattern *_pattern; + FT_Face _face; + TQOpenType *_openType; + int _cmap; + short lbearing; + short rbearing; + float _scale; + enum { widthCacheSize = 0x800, cmapCacheSize = 0x500 }; + unsigned char widthCache[widthCacheSize]; + glyph_t cmapCache[cmapCacheSize]; +}; +#endif + +class TQFontEngineLatinXLFD; + +class TQFontEngineXLFD : public TQFontEngine +{ +public: + TQFontEngineXLFD( XFontStruct *fs, const char *name, int cmap ); + ~TQFontEngineXLFD(); + + Error stringToCMap( const TQChar *str, int len, glyph_t *glyphs, advance_t *advances, int *nglyphs, bool mirrored ) const; + + void draw( TQPainter *p, int x, int y, const TQTextEngine *engine, const TQScriptItem *si, int textFlags ); + + virtual glyph_metrics_t boundingBox( const glyph_t *glyphs, + const advance_t *advances, const qoffset_t *offsets, int numGlyphs ); + glyph_metrics_t boundingBox( glyph_t glyph ); + + int ascent() const; + int descent() const; + int leading() const; + int maxCharWidth() const; + int minLeftBearing() const; + int minRightBearing() const; + + int cmap() const; + const char *name() const; + + bool canRender( const TQChar *string, int len ); + + void setScale( double scale ); + double scale() const { return _scale; } + Type type() const; + + TQt::HANDLE handle() const { return (TQt::HANDLE) _fs->fid; } + +private: + friend class TQFontPrivate; + XFontStruct *_fs; + TQCString _name; + TQTextCodec *_codec; + float _scale; // needed for printing, to correctly scale font metrics for bitmap fonts + int _cmap; + short lbearing; + short rbearing; + enum XlfdTransformations { + XlfdTrUnknown, + XlfdTrSupported, + XlfdTrUnsupported + }; + XlfdTransformations xlfd_transformations; + + friend class TQFontEngineLatinXLFD; +}; + +class TQFontEngineLatinXLFD : public TQFontEngine +{ +public: + TQFontEngineLatinXLFD( XFontStruct *xfs, const char *name, int cmap ); + ~TQFontEngineLatinXLFD(); + + Error stringToCMap( const TQChar *str, int len, glyph_t *glyphs, + advance_t *advances, int *nglyphs, bool mirrored ) const; + + void draw( TQPainter *p, int x, int y, const TQTextEngine *engine, + const TQScriptItem *si, int textFlags ); + + virtual glyph_metrics_t boundingBox( const glyph_t *glyphs, + const advance_t *advances, + const qoffset_t *offsets, int numGlyphs ); + glyph_metrics_t boundingBox( glyph_t glyph ); + + int ascent() const; + int descent() const; + int leading() const; + int maxCharWidth() const; + int minLeftBearing() const; + int minRightBearing() const; + + int cmap() const { return -1; } // ### + const char *name() const; + + bool canRender( const TQChar *string, int len ); + + void setScale( double scale ); + double scale() const { return _engines[0]->scale(); } + Type type() const { return LatinXLFD; } + + TQt::HANDLE handle() const { return ((TQFontEngineXLFD *) _engines[0])->handle(); } + +private: + void findEngine( const TQChar &ch ); + + TQFontEngine **_engines; + int _count; + + glyph_t glyphIndices [0x200]; + advance_t glyphAdvances[0x200]; + glyph_t euroIndex; + advance_t euroAdvance; +}; + +class TQScriptItem; +class TQTextEngine; + +#ifndef QT_NO_XFTFREETYPE + +#include "qscriptengine_p.h" +#include "qtextengine_p.h" +#include <ft2build.h> +#include FT_FREETYPE_H +#include "ftxopen.h" + +enum { PositioningProperties = 0x80000000 }; + +class TQOpenType +{ +public: + TQOpenType(TQFontEngineXft *fe); + ~TQOpenType(); + + struct Features { + uint tag; + uint property; + }; + + bool supportsScript(unsigned int script) { + Q_ASSERT(script < TQFont::NScripts); + return supported_scripts[script]; + } + void selectScript(unsigned int script, const Features *features = 0); + + bool shape(TQShaperItem *item, const unsigned int *properties = 0); + bool positionAndAdd(TQShaperItem *item, bool doLogClusters = TRUE); + + OTL_GlyphItem glyphs() const { return otl_buffer->in_string; } + int len() const { return otl_buffer->in_length; } + void setProperty(int index, uint property) { otl_buffer->in_string[index].properties = property; } + + +private: + bool checkScript(unsigned int script); + TQFontEngine *fontEngine; + FT_Face face; + TTO_GDEF gdef; + TTO_GSUB gsub; + TTO_GPOS gpos; + bool supported_scripts[TQFont::NScripts]; + FT_ULong current_script; + bool positioned : 1; + OTL_Buffer otl_buffer; + GlyphAttributes *tmpAttributes; + unsigned int *tmpLogClusters; + int length; + int orig_nglyphs; + int loadFlags; +}; + +#endif // QT_NO_XFTFREETYPE + +#elif defined( Q_WS_MAC ) +#include "qt_mac.h" +#include <qmap.h> +#include <qcache.h> + +class TQFontEngineMac : public TQFontEngine +{ +#if 0 + ATSFontMetrics *info; +#else + FontInfo *info; +#endif + int psize; + FMFontFamily fmfam; + TQMacFontInfo *internal_fi; + mutable ATSUTextLayout mTextLayout; + enum { widthCacheSize = 0x500 }; + mutable unsigned char widthCache[widthCacheSize]; + friend class TQFont; + friend class TQGLContext; + friend class TQFontPrivate; + friend class TQMacSetFontInfo; + +public: + TQFontEngineMac(); + ~TQFontEngineMac(); + + Error stringToCMap( const TQChar *str, int len, glyph_t *glyphs, advance_t *advances, int *nglyphs, bool mirrored ) const; + + void draw( TQPainter *p, int x, int y, const TQTextEngine *engine, const TQScriptItem *si, int textFlags ); + + glyph_metrics_t boundingBox( const glyph_t *glyphs, + const advance_t *advances, const qoffset_t *offsets, int numGlyphs ); + glyph_metrics_t boundingBox( glyph_t glyph ); + + int ascent() const { return (int)info->ascent; } + int descent() const { return (int)info->descent; } + int leading() const { return (int)info->leading; } +#if 0 + int maxCharWidth() const { return (int)info->maxAdvanceWidth; } +#else + int maxCharWidth() const { return info->widMax; } +#endif + + const char *name() const { return "ATSUI"; } + + bool canRender( const TQChar *string, int len ); + + Type type() const { return TQFontEngine::Mac; } + + void calculateCost(); + + enum { WIDTH=0x01, DRAW=0x02, EXISTS=0x04 }; + int doTextTask(const TQChar *s, int pos, int use_len, int len, uchar task, int =-1, int y=-1, + TQPaintDevice *dev=NULL, const TQRegion *rgn=NULL) const; +}; + +#elif defined( Q_WS_WIN ) + +class TQFontEngineWin : public TQFontEngine +{ +public: + TQFontEngineWin( const char *name, HDC, HFONT, bool, LOGFONT ); + + Error stringToCMap( const TQChar *str, int len, glyph_t *glyphs, advance_t *advances, int *nglyphs, bool mirrored ) const; + + void draw( TQPainter *p, int x, int y, const TQTextEngine *engine, const TQScriptItem *si, int textFlags ); + + glyph_metrics_t boundingBox( const glyph_t *glyphs, + const advance_t *advances, const qoffset_t *offsets, int numGlyphs ); + glyph_metrics_t boundingBox( glyph_t glyph ); + + int ascent() const; + int descent() const; + int leading() const; + int maxCharWidth() const; + int minLeftBearing() const; + int minRightBearing() const; + + const char *name() const; + + bool canRender( const TQChar *string, int len ); + + Type type() const; + + enum { widthCacheSize = 0x800, cmapCacheSize = 0x500 }; + unsigned char widthCache[widthCacheSize]; +}; + +#if 0 +class TQFontEngineUniscribe : public TQFontEngineWin +{ +public: + void draw( TQPainter *p, int x, int y, const TQTextEngine *engine, const TQScriptItem *si, int textFlags ); + bool canRender( const TQChar *string, int len ); + + Type type() const; +}; +#endif + +#endif // Q_WS_WIN + +#endif |