X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/ac17f9b104ea2e8f622813d93e19870cebd9637c..19cf1ef3a7077dd99a90f141847b8a9b67b318c9:/src/mac/carbon/font.cpp

diff --git a/src/mac/carbon/font.cpp b/src/mac/carbon/font.cpp
index 402293c36b..0fcdd8ad72 100644
--- a/src/mac/carbon/font.cpp
+++ b/src/mac/carbon/font.cpp
@@ -1,34 +1,163 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        font.cpp
+// Name:        src/mac/carbon/font.cpp
 // Purpose:     wxFont class
-// Author:      AUTHOR
+// Author:      Stefan Csomor
 // Modified by:
-// Created:     ??/??/98
+// Created:     1998-01-01
 // RCS-ID:      $Id$
-// Copyright:   (c) AUTHOR
-// Licence:   	wxWindows licence
+// Copyright:   (c) Stefan Csomor
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-#ifdef __GNUG__
-#pragma implementation "font.h"
-#endif
+#include "wx/wxprec.h"
 
-#include "wx/defs.h"
-#include "wx/string.h"
 #include "wx/font.h"
-#include "wx/fontutil.h"
-#include "wx/gdicmn.h"
-#include "wx/utils.h"
+
+#ifndef WX_PRECOMP
+    #include "wx/string.h"
+    #include "wx/utils.h"
+    #include "wx/intl.h"
+    #include "wx/gdicmn.h"
+    #include "wx/log.h"
+#endif
 
 #include "wx/fontutil.h"
+#include "wx/graphics.h"
 
 #include "wx/mac/private.h"
-#include "ATSUnicode.h"
 
-#if !USE_SHARED_LIBRARIES
-IMPLEMENT_DYNAMIC_CLASS(wxFont, wxGDIObject)
+#ifndef __DARWIN__
+#include <ATSUnicode.h>
 #endif
 
+
+IMPLEMENT_DYNAMIC_CLASS(wxFont, wxGDIObject)
+
+
+class WXDLLEXPORT wxFontRefData: public wxGDIRefData
+{
+    friend class WXDLLEXPORT wxFont;
+
+public:
+    wxFontRefData()
+        : m_fontId(0)
+        , m_pointSize(10)
+        , m_family(wxDEFAULT)
+        , m_style(wxNORMAL)
+        , m_weight(wxNORMAL)
+        , m_underlined(false)
+        , m_faceName(wxT("applicationfont"))
+        , m_encoding(wxFONTENCODING_DEFAULT)
+        , m_macFontFamily(0)
+        , m_macFontSize(0)
+        , m_macFontStyle(0)
+        , m_macATSUStyle(0)
+        , m_macATSUFontID(0)
+    {
+        Init(m_pointSize, m_family, m_style, m_weight,
+             m_underlined, m_faceName, m_encoding);
+    }
+
+    wxFontRefData(const wxFontRefData& data)
+        : wxGDIRefData()
+        , m_fontId(data.m_fontId)
+        , m_pointSize(data.m_pointSize)
+        , m_family(data.m_family)
+        , m_style(data.m_style)
+        , m_weight(data.m_weight)
+        , m_underlined(data.m_underlined)
+        , m_faceName(data.m_faceName)
+        , m_encoding(data.m_encoding)
+        , m_macFontFamily(data.m_macFontFamily)
+        , m_macFontSize(data.m_macFontSize)
+        , m_macFontStyle(data.m_macFontStyle)
+        , m_macATSUStyle(0)
+        , m_macATSUFontID(data.m_macATSUFontID)
+    {
+        Init(data.m_pointSize, data.m_family, data.m_style, data.m_weight,
+             data.m_underlined, data.m_faceName, data.m_encoding);
+    }
+
+    wxFontRefData(int size,
+                  int family,
+                  int style,
+                  int weight,
+                  bool underlined,
+                  const wxString& faceName,
+                  wxFontEncoding encoding)
+        : m_fontId(0)
+        , m_pointSize(size)
+        , m_family(family)
+        , m_style(style)
+        , m_weight(weight)
+        , m_underlined(underlined)
+        , m_faceName(faceName)
+        , m_encoding(encoding)
+        , m_macFontFamily(0)
+        , m_macFontSize(0)
+        , m_macFontStyle(0)
+        , m_macATSUStyle(0)
+        , m_macATSUFontID(0)
+    {
+        Init(size, family, style, weight, underlined, faceName, encoding);
+    }
+
+    virtual ~wxFontRefData();
+
+    void SetNoAntiAliasing( bool no = true )
+    { m_noAA = no; }
+
+    bool GetNoAntiAliasing() const
+    { return m_noAA; }
+
+    void MacFindFont();
+
+protected:
+    // common part of all ctors
+    void Init(int size,
+              int family,
+              int style,
+              int weight,
+              bool underlined,
+              const wxString& faceName,
+              wxFontEncoding encoding);
+
+    // font characterstics
+    int             m_fontId;
+    int             m_pointSize;
+    int             m_family;
+    int             m_style;
+    int             m_weight;
+    bool            m_underlined;
+    wxString        m_faceName;
+    wxFontEncoding  m_encoding;
+    bool            m_noAA;      // No anti-aliasing
+
+public:
+    FMFontFamily    m_macFontFamily;
+    FMFontSize      m_macFontSize;
+    FMFontStyle     m_macFontStyle;
+
+    // ATSU Font Information
+
+    // this is split into an ATSU font id that may
+    // contain some styles (special bold fonts etc) and
+    // these are the additional qd styles that are not
+    // included in the ATSU font id
+    ATSUStyle       m_macATSUStyle ;
+    ATSUFontID      m_macATSUFontID;
+    FMFontStyle     m_macATSUAdditionalQDStyles ;
+
+    // for true themeing support we must store the correct font
+    // information here, as this speeds up and optimizes rendering
+    ThemeFontID     m_macThemeFontID ;
+
+    wxNativeFontInfo  m_info;
+};
+
+#define M_FONTDATA ((wxFontRefData*)m_refData)
+
+
 // ============================================================================
 // implementation
 // ============================================================================
@@ -38,12 +167,12 @@ IMPLEMENT_DYNAMIC_CLASS(wxFont, wxGDIObject)
 // ----------------------------------------------------------------------------
 
 void wxFontRefData::Init(int pointSize,
-                         int family,
-                         int style,
-                         int weight,
-                         bool underlined,
-                         const wxString& faceName,
-                         wxFontEncoding encoding)
+    int family,
+    int style,
+    int weight,
+    bool underlined,
+    const wxString& faceName,
+    wxFontEncoding encoding)
 {
     m_style = style;
     m_pointSize = pointSize;
@@ -54,97 +183,213 @@ void wxFontRefData::Init(int pointSize,
     m_faceName = faceName;
     m_encoding = encoding;
 
-    m_macFontNum = 0 ;
+    m_macFontFamily = 0 ;
     m_macFontSize = 0;
     m_macFontStyle = 0;
-    m_fontId = 0;
-    m_noAA = FALSE;
+    m_macATSUFontID = 0;
+    m_macATSUAdditionalQDStyles = 0 ;
+    m_macATSUStyle = NULL ;
+
+    m_macThemeFontID = kThemeCurrentPortFont ;
+    m_noAA = false;
 }
 
 wxFontRefData::~wxFontRefData()
 {
+    if ( m_macATSUStyle )
+    {
+        ::ATSUDisposeStyle((ATSUStyle)m_macATSUStyle);
+        m_macATSUStyle = NULL ;
+    }
 }
 
 void wxFontRefData::MacFindFont()
 {
-	if( m_faceName == "" )
-	{
-		switch( m_family )
-		{
-			case wxDEFAULT :
-				m_macFontNum = ::GetAppFont() ;
-				break ;
-			case wxDECORATIVE :
-				::GetFNum( "\pTimes" , &m_macFontNum) ;
-				break ;
-			case wxROMAN :
-				::GetFNum( "\pTimes" , &m_macFontNum) ;
-				break ;
-			case wxSCRIPT :
-				::GetFNum( "\pTimes" , &m_macFontNum) ;
-				break ;
-			case wxSWISS :
-				::GetFNum( "\pGeneva" , &m_macFontNum) ;
-				break ;
-			case wxMODERN :
-				::GetFNum( "\pMonaco" , &m_macFontNum) ;
-				break ;
-		}
-		Str255 name ;
-		GetFontName( m_macFontNum , name ) ;
-		CopyPascalStringToC( name , (char*) name ) ;
-		m_faceName = (char*) name ;
-	}
-	else
-	{
-		if ( m_faceName == "systemfont" )
-			m_macFontNum = ::GetSysFont() ;
-		else if ( m_faceName == "applicationfont" )
-			m_macFontNum = ::GetAppFont() ;
-		else
-		{
-#if TARGET_CARBON
-			c2pstrcpy( (StringPtr) wxBuffer, m_faceName ) ;
+    OSStatus status ;
+
+    Str255 qdFontName ;
+    if ( m_macThemeFontID != kThemeCurrentPortFont )
+    {
+        Style style ;
+        GetThemeFont( m_macThemeFontID, GetApplicationScript(), qdFontName, &m_macFontSize, &style );
+        m_macFontStyle = style ;
+        m_faceName = wxMacMakeStringFromPascal( qdFontName );
+        if ( m_macFontStyle & bold )
+            m_weight = wxBOLD ;
+        else
+            m_weight = wxNORMAL ;
+        if ( m_macFontStyle & italic )
+            m_style = wxITALIC ;
+        if ( m_macFontStyle & underline )
+            m_underlined = true ;
+        m_pointSize = m_macFontSize ;
+#ifndef __LP64__
+        m_macFontFamily = FMGetFontFamilyFromName( qdFontName );
+#endif
+    }
+    else
+    {
+        if ( m_faceName.empty() )
+        {
+            if ( m_family == wxDEFAULT )
+            {
+#ifndef __LP64__
+                m_macFontFamily = GetAppFont();
+                FMGetFontFamilyName(m_macFontFamily,qdFontName);
+                m_faceName = wxMacMakeStringFromPascal( qdFontName );
+#endif
+            }
+            else
+            {
+                switch ( m_family )
+                {
+                    case wxSCRIPT :
+                    case wxROMAN :
+                    case wxDECORATIVE :
+                        m_faceName = wxT("Times");
+                        break ;
+
+                    case wxSWISS :
+                        m_faceName =  wxT("Lucida Grande");
+                        break ;
+
+                    case wxMODERN :
+                    case wxTELETYPE:
+                        m_faceName =  wxT("Monaco");
+                        break ;
+
+                    default:
+                        m_faceName =  wxT("Times");
+                        break ;
+                }
+#ifndef __LP64__
+                wxMacStringToPascal( m_faceName , qdFontName );
+                m_macFontFamily = FMGetFontFamilyFromName( qdFontName );
+                if ( m_macFontFamily == kInvalidFontFamily )
+                {
+                    wxLogDebug( wxT("ATSFontFamilyFindFromName failed for %s"), m_faceName.c_str() );
+                    m_macFontFamily = GetAppFont();
+                }
+#endif
+            }
+        }
+        else
+        {
+#ifndef __LP64__
+            if ( m_faceName == wxT("systemfont") )
+                m_macFontFamily = GetSysFont();
+            else if ( m_faceName == wxT("applicationfont") )
+                m_macFontFamily = GetAppFont();
+            else
 #else
-			strcpy( (char *) wxBuffer, m_faceName ) ;
-			c2pstr( (char *) wxBuffer ) ;
+            if ( m_faceName == wxT("systemfont") )
+                m_faceName =  wxT("Lucida Grande");
+            else if ( m_faceName == wxT("applicationfont") )
+                m_faceName =  wxT("Lucida Grande");
 #endif
-			::GetFNum( (StringPtr) wxBuffer, &m_macFontNum);
-		}
-	}
-
-	m_macFontStyle = 0;
-	if (m_weight == wxBOLD)
-		 m_macFontStyle |= bold;
-	if (m_style == wxITALIC || m_style == wxSLANT) 
-		m_macFontStyle |= italic;
-	if (m_underlined) 
-		m_macFontStyle |= underline;
-	m_macFontSize = m_pointSize ;
-	
-	//TODO:if we supply the style as an additional parameter we must make a testing
-	//sequence in order to degrade gracefully while trying to maintain most of the style
-	//information, meanwhile we just take the normal font and apply the features after
-	OSStatus status = ::ATSUFONDtoFontID(m_macFontNum, normal /*qdStyle*/, (UInt32*)&m_macATSUFontID); 
-    /*
-    status = ATSUFindFontFromName ( (Ptr) m_faceName , strlen( m_faceName ) ,
-        kFontFullName,	kFontMacintoshPlatform, kFontRomanScript , kFontNoLanguage  ,  (UInt32*)&m_macATSUFontID ) ;
-    */
-	wxASSERT_MSG( status == noErr , "couldn't retrieve font identifier" ) ;
+            {
+                wxMacCFStringHolder cf( m_faceName, wxLocale::GetSystemEncoding() );
+                ATSFontFamilyRef atsfamily = ATSFontFamilyFindFromName( cf , kATSOptionFlagsDefault );
+                
+                // ATSFontFamilyRef is an unsigned type, so check against max
+                // for an invalid value, not -1.
+                if ( atsfamily == 0xffffffff  )
+                {
+                    wxLogDebug( wxT("ATSFontFamilyFindFromName failed for ") + m_faceName );
+                    m_macFontFamily = GetAppFont();
+                }
+                else
+                    m_macFontFamily = FMGetFontFamilyFromATSFontFamilyRef( atsfamily );
+            }
+        }
+
+        m_macFontStyle = 0;
+        if (m_weight == wxBOLD)
+             m_macFontStyle |= bold;
+        if (m_style == wxITALIC || m_style == wxSLANT)
+            m_macFontStyle |= italic;
+        if (m_underlined)
+            m_macFontStyle |= underline;
+        m_macFontSize = m_pointSize ;
+    }
+
+    // we try to get as much styles as possible into ATSU
+
+
+    // ATSUFontID and FMFont are equivalent
+    FMFontStyle intrinsicStyle = 0 ;
+#ifndef __LP64__
+    status = FMGetFontFromFontFamilyInstance( m_macFontFamily , m_macFontStyle , &m_macATSUFontID , &intrinsicStyle);
+    wxASSERT_MSG( status == noErr , wxT("couldn't get an ATSUFont from font family") );
+#endif
+    m_macATSUAdditionalQDStyles = m_macFontStyle & (~intrinsicStyle );
+
+    if ( m_macATSUStyle )
+    {
+        ::ATSUDisposeStyle((ATSUStyle)m_macATSUStyle);
+        m_macATSUStyle = NULL ;
+    }
+
+    status = ::ATSUCreateStyle((ATSUStyle *)&m_macATSUStyle);
+    wxASSERT_MSG( status == noErr , wxT("couldn't create ATSU style") );
+
+    ATSUAttributeTag atsuTags[] =
+    {
+        kATSUFontTag ,
+        kATSUSizeTag ,
+        kATSUVerticalCharacterTag,
+        kATSUQDBoldfaceTag ,
+        kATSUQDItalicTag ,
+        kATSUQDUnderlineTag ,
+        kATSUQDCondensedTag ,
+        kATSUQDExtendedTag ,
+    };
+    ByteCount atsuSizes[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
+    {
+        sizeof( ATSUFontID ) ,
+        sizeof( Fixed ) ,
+        sizeof( ATSUVerticalCharacterType),
+        sizeof( Boolean ) ,
+        sizeof( Boolean ) ,
+        sizeof( Boolean ) ,
+        sizeof( Boolean ) ,
+        sizeof( Boolean ) ,
+    };
+
+    Boolean kTrue = true ;
+    Boolean kFalse = false ;
+
+    Fixed atsuSize = IntToFixed( m_macFontSize );
+    ATSUVerticalCharacterType kHorizontal = kATSUStronglyHorizontal;
+    ATSUAttributeValuePtr    atsuValues[sizeof(atsuTags) / sizeof(ATSUAttributeTag)] =
+    {
+            &m_macATSUFontID ,
+            &atsuSize ,
+            &kHorizontal,
+            (m_macATSUAdditionalQDStyles & bold) ? &kTrue : &kFalse ,
+            (m_macATSUAdditionalQDStyles & italic) ? &kTrue : &kFalse ,
+            (m_macATSUAdditionalQDStyles & underline) ? &kTrue : &kFalse ,
+            (m_macATSUAdditionalQDStyles & condense) ? &kTrue : &kFalse ,
+            (m_macATSUAdditionalQDStyles & extend) ? &kTrue : &kFalse ,
+    };
+
+    status = ::ATSUSetAttributes(
+        (ATSUStyle)m_macATSUStyle,
+        sizeof(atsuTags) / sizeof(ATSUAttributeTag) ,
+        atsuTags, atsuSizes, atsuValues);
+
+    wxASSERT_MSG( status == noErr , wxT("couldn't modify ATSU style") );
 }
 
 // ----------------------------------------------------------------------------
 // wxFont
 // ----------------------------------------------------------------------------
 
-void wxFont::Init()
-{
-}
-
 bool wxFont::Create(const wxNativeFontInfo& info)
 {
-    return Create(info.pointSize, info.family, info.style, info.weight,
-                  info.underlined, info.faceName, info.encoding);
+    return Create(
+        info.pointSize, info.family, info.style, info.weight,
+        info.underlined, info.faceName, info.encoding );
 }
 
 wxFont::wxFont(const wxString& fontdesc)
@@ -155,20 +400,36 @@ wxFont::wxFont(const wxString& fontdesc)
 }
 
 bool wxFont::Create(int pointSize,
-                    int family,
-                    int style,
-                    int weight,
-                    bool underlined,
-                    const wxString& faceName,
-                    wxFontEncoding encoding)
+    int family,
+    int style,
+    int weight,
+    bool underlined,
+    const wxString& faceName,
+    wxFontEncoding encoding)
+{
+    UnRef();
+
+    m_refData = new wxFontRefData(
+        pointSize, family, style, weight,
+        underlined, faceName, encoding);
+
+    RealizeResource();
+
+    return true;
+}
+
+bool wxFont::MacCreateThemeFont(wxUint16 themeFontID)
 {
     UnRef();
-    m_refData = new wxFontRefData(pointSize, family, style, weight,
-                                  underlined, faceName, encoding);
 
+    m_refData = new wxFontRefData(
+        12, wxDEFAULT, wxFONTSTYLE_NORMAL, wxFONTWEIGHT_NORMAL,
+        false, wxEmptyString, wxFONTENCODING_DEFAULT );
+
+    M_FONTDATA->m_macThemeFontID = themeFontID ;
     RealizeResource();
 
-    return TRUE;
+    return true;
 }
 
 wxFont::~wxFont()
@@ -177,8 +438,9 @@ wxFont::~wxFont()
 
 bool wxFont::RealizeResource()
 {
-	M_FONTDATA->MacFindFont() ;
-    return TRUE;
+    M_FONTDATA->MacFindFont();
+
+    return true;
 }
 
 void wxFont::SetEncoding(wxFontEncoding encoding)
@@ -192,17 +454,17 @@ void wxFont::SetEncoding(wxFontEncoding encoding)
 
 void wxFont::Unshare()
 {
-	// Don't change shared data
-	if (!m_refData)
+    // Don't change shared data
+    if (!m_refData)
     {
-		m_refData = new wxFontRefData();
-	}
+        m_refData = new wxFontRefData();
+    }
     else
     {
-		wxFontRefData* ref = new wxFontRefData(*(wxFontRefData*)m_refData);
-		UnRef();
-		m_refData = ref;
-	}
+        wxFontRefData* ref = new wxFontRefData(*(wxFontRefData*)m_refData);
+        UnRef();
+        m_refData = ref;
+    }
 }
 
 void wxFont::SetPointSize(int pointSize)
@@ -241,13 +503,15 @@ void wxFont::SetWeight(int weight)
     RealizeResource();
 }
 
-void wxFont::SetFaceName(const wxString& faceName)
+bool wxFont::SetFaceName(const wxString& faceName)
 {
     Unshare();
 
     M_FONTDATA->m_faceName = faceName;
 
     RealizeResource();
+
+    return wxFontBase::SetFaceName(faceName);
 }
 
 void wxFont::SetUnderlined(bool underlined)
@@ -272,46 +536,133 @@ void wxFont::SetNoAntiAliasing( bool no )
 // accessors
 // ----------------------------------------------------------------------------
 
+// TODO: insert checks everywhere for M_FONTDATA == NULL!
+
 int wxFont::GetPointSize() const
 {
+    wxCHECK_MSG( M_FONTDATA != NULL , 0, wxT("invalid font") );
+
     return M_FONTDATA->m_pointSize;
 }
 
+wxSize wxFont::GetPixelSize() const
+{
+#if wxUSE_GRAPHICS_CONTEXT
+    // TODO: consider caching the value
+    wxGraphicsContext* dc = wxGraphicsContext::CreateFromNative((CGContextRef) NULL);
+    dc->SetFont(*(wxFont *)this,*wxBLACK);
+    wxDouble width, height = 0;
+    dc->GetTextExtent( wxT("g"), &width, &height, NULL, NULL);
+    return wxSize((int)width, (int)height);
+#else
+    return wxFontBase::GetPixelSize();
+#endif
+}
+
 int wxFont::GetFamily() const
 {
+    wxCHECK_MSG( M_FONTDATA != NULL , 0, wxT("invalid font") );
+
     return M_FONTDATA->m_family;
 }
 
 int wxFont::GetStyle() const
 {
+    wxCHECK_MSG( M_FONTDATA != NULL , 0, wxT("invalid font") );
+
     return M_FONTDATA->m_style;
 }
 
 int wxFont::GetWeight() const
 {
+    wxCHECK_MSG( M_FONTDATA != NULL , 0, wxT("invalid font") );
+
     return M_FONTDATA->m_weight;
 }
 
 bool wxFont::GetUnderlined() const
 {
+    wxCHECK_MSG( M_FONTDATA != NULL , false, wxT("invalid font") );
+
     return M_FONTDATA->m_underlined;
 }
 
 wxString wxFont::GetFaceName() const
 {
-    wxString str;
-    if ( M_FONTDATA )
-        str = M_FONTDATA->m_faceName ;
-    return str;
+    wxCHECK_MSG( M_FONTDATA != NULL , wxEmptyString , wxT("invalid font") );
+
+    return M_FONTDATA->m_faceName;
 }
 
 wxFontEncoding wxFont::GetEncoding() const
 {
+    wxCHECK_MSG( M_FONTDATA != NULL , wxFONTENCODING_DEFAULT , wxT("invalid font") );
+
     return M_FONTDATA->m_encoding;
 }
 
-bool wxFont::GetNoAntiAliasing()
+bool wxFont::GetNoAntiAliasing() const
 {
+    wxCHECK_MSG( M_FONTDATA != NULL , false, wxT("invalid font") );
+
     return M_FONTDATA->m_noAA;
 }
 
+short wxFont::MacGetFontNum() const
+{
+    wxCHECK_MSG( M_FONTDATA != NULL , 0, wxT("invalid font") );
+
+    return M_FONTDATA->m_macFontFamily;
+}
+
+short wxFont::MacGetFontSize() const
+{
+    wxCHECK_MSG( M_FONTDATA != NULL , 0, wxT("invalid font") );
+
+    return M_FONTDATA->m_macFontSize;
+}
+
+wxByte wxFont::MacGetFontStyle() const
+{
+    wxCHECK_MSG( M_FONTDATA != NULL , 0, wxT("invalid font") );
+
+    return M_FONTDATA->m_macFontStyle;
+}
+
+wxUint32 wxFont::MacGetATSUFontID() const
+{
+    wxCHECK_MSG( M_FONTDATA != NULL , 0, wxT("invalid font") );
+
+    return M_FONTDATA->m_macATSUFontID;
+}
+
+void * wxFont::MacGetATSUStyle() const
+{
+    wxCHECK_MSG( M_FONTDATA != NULL , NULL, wxT("invalid font") );
+
+    return M_FONTDATA->m_macATSUStyle;
+}
+
+wxUint32 wxFont::MacGetATSUAdditionalQDStyles() const
+{
+    wxCHECK_MSG( M_FONTDATA != NULL , 0, wxT("invalid font") );
+
+    return M_FONTDATA->m_macATSUAdditionalQDStyles;
+}
+
+wxUint16 wxFont::MacGetThemeFontID() const
+{
+    wxCHECK_MSG( M_FONTDATA != NULL , 0, wxT("invalid font") );
+
+    return M_FONTDATA->m_macThemeFontID;
+}
+
+const wxNativeFontInfo * wxFont::GetNativeFontInfo() const
+{
+    wxCHECK_MSG( M_FONTDATA != NULL , NULL, wxT("invalid font") );
+    wxCHECK_MSG( Ok(), NULL, wxT("invalid font") );
+
+    M_FONTDATA->m_info.InitFromFont(*this);
+
+    return &(M_FONTDATA->m_info);
+}