Add Qt3 development HEAD version

1 files changed, 632 insertions, 0 deletions

diff --git a/src/kernel/qfontengine_p.h b/src/kernel/qfontengine_p.h
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+/****************************************************************************
+**
+** ???
+**
+** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of the kernel module of the Qt 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 Qt 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 [email protected].
+**
+** Licensees holding valid Qt Commercial 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 WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
+** herein.
+**
+**********************************************************************/
+
+#ifndef QFONTENGINE_P_H
+#define QFONTENGINE_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 QPaintDevice;
+
+struct glyph_metrics_t;
+class QChar;
+typedef unsigned short glyph_t;
+struct qoffset_t;
+typedef int advance_t;
+class QOpenType;
+struct TransformedFont;
+
+#if defined( Q_WS_X11 ) || defined( Q_WS_WIN) || defined( Q_WS_MAC )
+class QFontEngine : public QShared
+{
+public:
+    enum Error {
+	NoError,
+	OutOfMemory
+    };
+
+    enum Type {
+	// X11 types
+	Box,
+	XLFD,
+	LatinXLFD,
+	Xft,
+
+	// MS Windows types
+	Win,
+	Uniscribe,
+
+	// Apple MacOS types
+	Mac,
+
+	// Trolltech QWS types
+	QWS
+    };
+
+    QFontEngine() {
+	count = 0; cache_count = 0;
+#ifdef Q_WS_X11
+	transformed_fonts = 0;
+#endif
+    }
+    virtual ~QFontEngine();
+
+    /* returns 0 as glyph index for non existant glyphs */
+    virtual Error stringToCMap( const QChar *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 QOpenType *openType() const { return 0; }
+#endif
+
+    virtual void draw( QPainter *p, int x, int y, const QTextEngine *engine, const QScriptItem *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 QChar *string,  int len ) = 0;
+
+    virtual void setScale( double ) {}
+    virtual double scale() const { return 1.; }
+
+    virtual Type type() const = 0;
+
+    QFontDef 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 QChar *ch, int numChars, glyph_t *glyphs, bool mirrored ) const;
+    void getCMap();
+
+    QCString _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 QPtrDict<QFontEngine> cacheDict;
+    short lbearing;
+    short rbearing;
+#endif // Q_WS_WIN
+#ifdef Q_WS_X11
+    TransformedFont *transformed_fonts;
+#endif
+};
+#elif defined( Q_WS_QWS )
+class QGfx;
+
+class QFontEngine : public QShared
+{
+public:
+    QFontEngine( const QFontDef&, const QPaintDevice * = 0 );
+   ~QFontEngine();
+    /*QMemoryManager::FontID*/ void *handle() const;
+
+    enum Type {
+	// X11 types
+	Box,
+	XLFD,
+	Xft,
+
+	// MS Windows types
+	Win,
+	Uniscribe,
+
+	// Apple MacOS types
+	Mac,
+
+	// Trolltech QWS 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 QChar *str, int len, glyph_t *glyphs, advance_t *advances, int *nglyphs, bool mirrored ) const;
+
+    void draw( QPainter *p, int x, int y, const QTextEngine *engine, const QScriptItem *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 QChar *string,  int len );
+    inline const char *name() const { return 0; }
+    QFontDef fontDef;
+    /*QMemoryManager::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 QFontEngineBox : public QFontEngine
+{
+public:
+    QFontEngineBox( int size );
+    ~QFontEngineBox();
+
+    Error stringToCMap( const QChar *str,  int len, glyph_t *glyphs, advance_t *advances, int *nglyphs, bool mirrored ) const;
+
+    void draw( QPainter *p, int x, int y, const QTextEngine *engine, const QScriptItem *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 QChar *string,  int len );
+
+    Type type() const;
+    inline int size() const { return _size; }
+
+private:
+    friend class QFontPrivate;
+    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 QTextCodec;
+
+class QFontEngineXft : public QFontEngine
+{
+public:
+    QFontEngineXft( XftFont *font, XftPattern *pattern, int cmap );
+    ~QFontEngineXft();
+
+    QOpenType *openType() const;
+
+    Error stringToCMap( const QChar *str,  int len, glyph_t *glyphs, advance_t *advances, int *nglyphs, bool mirrored ) const;
+
+    void draw( QPainter *p, int x, int y, const QTextEngine *engine, const QScriptItem *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 QChar *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 QFontPrivate;
+    friend class QOpenType;
+    XftFont *_font;
+    XftPattern *_pattern;
+    FT_Face _face;
+    QOpenType *_openType;
+    int _cmap;
+    short lbearing;
+    short rbearing;
+    float _scale;
+    enum { widthCacheSize = 0x800, cmapCacheSize = 0x500 };
+    unsigned char widthCache[widthCacheSize];
+    glyph_t cmapCache[cmapCacheSize];
+};
+#endif
+
+class QFontEngineLatinXLFD;
+
+class QFontEngineXLFD : public QFontEngine
+{
+public:
+    QFontEngineXLFD( XFontStruct *fs, const char *name, int cmap );
+    ~QFontEngineXLFD();
+
+    Error stringToCMap( const QChar *str,  int len, glyph_t *glyphs, advance_t *advances, int *nglyphs, bool mirrored ) const;
+
+    void draw( QPainter *p, int x, int y, const QTextEngine *engine, const QScriptItem *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 QChar *string,  int len );
+
+    void setScale( double scale );
+    double scale() const { return _scale; }
+    Type type() const;
+
+    Qt::HANDLE handle() const { return (Qt::HANDLE) _fs->fid; }
+
+private:
+    friend class QFontPrivate;
+    XFontStruct *_fs;
+    QCString _name;
+    QTextCodec *_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 QFontEngineLatinXLFD;
+};
+
+class QFontEngineLatinXLFD : public QFontEngine
+{
+public:
+    QFontEngineLatinXLFD( XFontStruct *xfs, const char *name, int cmap );
+    ~QFontEngineLatinXLFD();
+
+    Error stringToCMap( const QChar *str,  int len, glyph_t *glyphs,
+			advance_t *advances, int *nglyphs, bool mirrored ) const;
+
+    void draw( QPainter *p, int x, int y, const QTextEngine *engine,
+	       const QScriptItem *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 QChar *string,  int len );
+
+    void setScale( double scale );
+    double scale() const { return _engines[0]->scale(); }
+    Type type() const { return LatinXLFD; }
+
+    Qt::HANDLE handle() const { return ((QFontEngineXLFD *) _engines[0])->handle(); }
+
+private:
+    void findEngine( const QChar &ch );
+
+    QFontEngine **_engines;
+    int _count;
+
+    glyph_t   glyphIndices [0x200];
+    advance_t glyphAdvances[0x200];
+    glyph_t euroIndex;
+    advance_t euroAdvance;
+};
+
+class QScriptItem;
+class QTextEngine;
+
+#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 QOpenType
+{
+public:
+    QOpenType(QFontEngineXft *fe);
+    ~QOpenType();
+
+    struct Features {
+        uint tag;
+        uint property;
+    };
+
+    bool supportsScript(unsigned int script) {
+        Q_ASSERT(script < QFont::NScripts);
+        return supported_scripts[script];
+    }
+    void selectScript(unsigned int script, const Features *features = 0);
+
+    bool shape(QShaperItem *item, const unsigned int *properties = 0);
+    bool positionAndAdd(QShaperItem *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);
+    QFontEngine *fontEngine;
+    FT_Face face;
+    TTO_GDEF gdef;
+    TTO_GSUB gsub;
+    TTO_GPOS gpos;
+    bool supported_scripts[QFont::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 QFontEngineMac : public QFontEngine
+{
+#if 0
+    ATSFontMetrics *info;
+#else
+    FontInfo *info;
+#endif
+    int psize;
+    FMFontFamily fmfam;
+    QMacFontInfo *internal_fi;
+    mutable ATSUTextLayout mTextLayout;
+    enum { widthCacheSize = 0x500 };
+    mutable unsigned char widthCache[widthCacheSize];
+    friend class QFont;
+    friend class QGLContext;
+    friend class QFontPrivate;
+    friend class QMacSetFontInfo;
+
+public:
+    QFontEngineMac();
+    ~QFontEngineMac();
+
+    Error stringToCMap( const QChar *str, int len, glyph_t *glyphs, advance_t *advances, int *nglyphs, bool mirrored ) const;
+
+    void draw( QPainter *p, int x, int y, const QTextEngine *engine, const QScriptItem *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 QChar *string,  int len );
+
+    Type type() const { return QFontEngine::Mac; }
+
+    void calculateCost();
+
+    enum { WIDTH=0x01, DRAW=0x02, EXISTS=0x04 };
+    int doTextTask(const QChar *s, int pos, int use_len, int len, uchar task, int =-1, int y=-1,
+		   QPaintDevice *dev=NULL, const QRegion *rgn=NULL) const;
+};
+
+#elif defined( Q_WS_WIN )
+
+class QFontEngineWin : public QFontEngine
+{
+public:
+    QFontEngineWin( const char *name, HDC, HFONT, bool, LOGFONT );
+
+    Error stringToCMap( const QChar *str, int len, glyph_t *glyphs, advance_t *advances, int *nglyphs, bool mirrored ) const;
+
+    void draw( QPainter *p, int x, int y, const QTextEngine *engine, const QScriptItem *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 QChar *string,  int len );
+
+    Type type() const;
+
+    enum { widthCacheSize = 0x800, cmapCacheSize = 0x500 };
+    unsigned char widthCache[widthCacheSize];
+};
+
+#if 0
+class QFontEngineUniscribe : public QFontEngineWin
+{
+public:
+    void draw( QPainter *p, int x, int y, const QTextEngine *engine, const QScriptItem *si, int textFlags );
+    bool canRender( const QChar *string,  int len );
+
+    Type type() const;
+};
+#endif
+
+#endif // Q_WS_WIN
+
+#endif