src/common/fontcmn.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        src/common/fontcmn.cpp
// Purpose:     implementation of wxFontBase methods
// Author:      Vadim Zeitlin
// Modified by:
// Created:     20.09.99
// RCS-ID:      $Id$
// Copyright:   (c) wxWidgets team
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

// ============================================================================
// declarations
// ============================================================================

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#include "wx/font.h"

#ifndef WX_PRECOMP
    #include "wx/dc.h"
    #include "wx/intl.h"
    #include "wx/dcscreen.h"
    #include "wx/log.h"
    #include "wx/gdicmn.h"
#endif // WX_PRECOMP

#if defined(__WXMSW__)
    #include  "wx/msw/private.h"  // includes windows.h for LOGFONT
    #include  "wx/msw/winundef.h"
#endif

#include "wx/fontutil.h" // for wxNativeFontInfo
#include "wx/fontmap.h"
#include "wx/fontenum.h"

#include "wx/tokenzr.h"

// ============================================================================
// implementation
// ============================================================================

// ----------------------------------------------------------------------------
// helper functions
// ----------------------------------------------------------------------------

static void AdjustFontSize(wxFont& font, wxDC& dc, const wxSize& pixelSize)
{
    int currentSize = 0;
    int largestGood = 0;
    int smallestBad = 0;

    bool initialGoodFound = false;
    bool initialBadFound = false;

    // NB: this assignment was separated from the variable definition
    // in order to fix a gcc v3.3.3 compiler crash
    currentSize = font.GetPointSize();
    while (currentSize > 0)
    {
        dc.SetFont(font);

        // if currentSize (in points) results in a font that is smaller
        // than required by pixelSize it is considered a good size
        if (dc.GetCharHeight() <= pixelSize.GetHeight() &&
                (!pixelSize.GetWidth() ||
                 dc.GetCharWidth() <= pixelSize.GetWidth()))
        {
            largestGood = currentSize;
            initialGoodFound = true;
        }
        else
        {
            smallestBad = currentSize;
            initialBadFound = true;
        }
        if (!initialGoodFound)
        {
            currentSize /= 2;
        }
        else if (!initialBadFound)
        {
            currentSize *= 2;
        }
        else
        {
            int distance = smallestBad - largestGood;
            if (distance == 1)
                break;

            currentSize = largestGood + distance / 2;
        }

        font.SetPointSize(currentSize);
    }

    if (currentSize != largestGood)
        font.SetPointSize(largestGood);
}

// ----------------------------------------------------------------------------
// wxFontBase
// ----------------------------------------------------------------------------

wxFontEncoding wxFontBase::ms_encodingDefault = wxFONTENCODING_SYSTEM;

/* static */
void wxFontBase::SetDefaultEncoding(wxFontEncoding encoding)
{
    // GetDefaultEncoding() should return something != wxFONTENCODING_DEFAULT
    // and, besides, using this value here doesn't make any sense
    wxCHECK_RET( encoding != wxFONTENCODING_DEFAULT,
                 _T("can't set default encoding to wxFONTENCODING_DEFAULT") );

    ms_encodingDefault = encoding;
}

wxFontBase::~wxFontBase()
{
    // this destructor is required for Darwin
}

/* static */
wxFont *wxFontBase::New(int size,
                        int family,
                        int style,
                        int weight,
                        bool underlined,
                        const wxString& face,
                        wxFontEncoding encoding)
{
    return new wxFont(size, family, style, weight, underlined, face, encoding);
}

static inline int flags2Style(int flags)
{
    return flags & wxFONTFLAG_ITALIC
                    ? wxFONTSTYLE_ITALIC
                    : flags & wxFONTFLAG_SLANT
                        ? wxFONTSTYLE_SLANT
                        : wxFONTSTYLE_NORMAL;
}

static inline int flags2Weight(int flags)
{
    return flags & wxFONTFLAG_LIGHT
                    ? wxFONTWEIGHT_LIGHT
                    : flags & wxFONTFLAG_BOLD
                        ? wxFONTWEIGHT_BOLD
                        : wxFONTWEIGHT_NORMAL;
}

static inline bool flags2Underlined(int flags)
{
    return (flags & wxFONTFLAG_UNDERLINED) != 0;
}

/* static */
wxFont *wxFontBase::New(int pointSize,
                        wxFontFamily family,
                        int flags,
                        const wxString& face,
                        wxFontEncoding encoding)
{
    return New(pointSize, family, flags2Style(flags), flags2Weight(flags),
               flags2Underlined(flags), face, encoding);
}

/* static */
wxFont *wxFontBase::New(const wxSize& pixelSize,
                        int family,
                        int style,
                        int weight,
                        bool underlined,
                        const wxString& face,
                        wxFontEncoding encoding)
{
#if defined(__WXMSW__)
    return new wxFont(pixelSize, family, style, weight, underlined,
                      face, encoding);
#else
    wxFont *self = New(10, family, style, weight, underlined, face, encoding);
    wxScreenDC dc;
    AdjustFontSize(*(wxFont *)self, dc, pixelSize);
    return self;
#endif
}

/* static */
wxFont *wxFontBase::New(const wxSize& pixelSize,
                        wxFontFamily family,
                        int flags,
                        const wxString& face,
                        wxFontEncoding encoding)
{
    return New(pixelSize, family, flags2Style(flags), flags2Weight(flags),
               flags2Underlined(flags), face, encoding);
}

wxSize wxFontBase::GetPixelSize() const
{
    wxScreenDC dc;
    dc.SetFont(*(wxFont *)this);
    return wxSize(dc.GetCharWidth(), dc.GetCharHeight());
}

bool wxFontBase::IsUsingSizeInPixels() const
{
    return false;
}

void wxFontBase::SetPixelSize( const wxSize& pixelSize )
{
    wxScreenDC dc;
    AdjustFontSize(*(wxFont *)this, dc, pixelSize);
}

/* static */
wxFont *wxFontBase::New(const wxNativeFontInfo& info)
{
    return new wxFont(info);
}

/* static */
wxFont *wxFontBase::New(const wxString& strNativeFontDesc)
{
    wxNativeFontInfo fontInfo;
    if ( !fontInfo.FromString(strNativeFontDesc) )
        return new wxFont(*wxNORMAL_FONT);

    return New(fontInfo);
}

bool wxFontBase::IsFixedWidth() const
{
    return GetFamily() == wxFONTFAMILY_TELETYPE;
}

void wxFontBase::DoSetNativeFontInfo(const wxNativeFontInfo& info)
{
#ifdef wxNO_NATIVE_FONTINFO
    SetPointSize(info.pointSize);
    SetFamily(info.family);
    SetStyle(info.style);
    SetWeight(info.weight);
    SetUnderlined(info.underlined);
    SetFaceName(info.faceName);
    SetEncoding(info.encoding);
#else
    (void)info;
#endif
}

wxString wxFontBase::GetNativeFontInfoDesc() const
{
    wxString fontDesc;
    const wxNativeFontInfo *fontInfo = GetNativeFontInfo();
    if ( fontInfo )
    {
        fontDesc = fontInfo->ToString();
        wxASSERT_MSG(!fontDesc.empty(), wxT("This should be a non-empty string!"));
    }
    else
    {
        wxFAIL_MSG(wxT("Derived class should have created the wxNativeFontInfo!"));
    }

    return fontDesc;
}

wxString wxFontBase::GetNativeFontInfoUserDesc() const
{
    wxString fontDesc;
    const wxNativeFontInfo *fontInfo = GetNativeFontInfo();
    if ( fontInfo )
    {
        fontDesc = fontInfo->ToUserString();
        wxASSERT_MSG(!fontDesc.empty(), wxT("This should be a non-empty string!"));
    }
    else
    {
        wxFAIL_MSG(wxT("Derived class should have created the wxNativeFontInfo!"));
    }

    return fontDesc;
}

bool wxFontBase::SetNativeFontInfo(const wxString& info)
{
    wxNativeFontInfo fontInfo;
    if ( !info.empty() && fontInfo.FromString(info) )
    {
        SetNativeFontInfo(fontInfo);
        return true;
    }

    return false;
}

bool wxFontBase::SetNativeFontInfoUserDesc(const wxString& info)
{
    wxNativeFontInfo fontInfo;
    if ( !info.empty() && fontInfo.FromUserString(info) )
    {
        SetNativeFontInfo(fontInfo);
        return true;
    }

    return false;
}

bool wxFontBase::operator==(const wxFont& font) const
{
    // either it is the same font, i.e. they share the same common data or they
    // have different ref datas but still describe the same font
    return IsSameAs(font) ||
           (
            Ok() == font.Ok() &&
            GetPointSize() == font.GetPointSize() &&
            // in wxGTK1 GetPixelSize() calls GetInternalFont() which uses
            // operator==() resulting in infinite recursion so we can't use it
            // in that port
#if !defined(__WXGTK__) || defined(__WXGTK20__)
            GetPixelSize() == font.GetPixelSize() &&
#endif
            GetFamily() == font.GetFamily() &&
            GetStyle() == font.GetStyle() &&
            GetWeight() == font.GetWeight() &&
            GetUnderlined() == font.GetUnderlined() &&
            GetFaceName().IsSameAs(font.GetFaceName(), false) &&
            GetEncoding() == font.GetEncoding()
           );
}

wxString wxFontBase::GetFamilyString() const
{
    wxCHECK_MSG( Ok(), wxT("wxDEFAULT"), wxT("invalid font") );

    switch ( GetFamily() )
    {
        case wxDECORATIVE:   return wxT("wxDECORATIVE");
        case wxROMAN:        return wxT("wxROMAN");
        case wxSCRIPT:       return wxT("wxSCRIPT");
        case wxSWISS:        return wxT("wxSWISS");
        case wxMODERN:       return wxT("wxMODERN");
        case wxTELETYPE:     return wxT("wxTELETYPE");
        default:             return wxT("wxDEFAULT");
    }
}

wxString wxFontBase::GetStyleString() const
{
    wxCHECK_MSG( Ok(), wxT("wxDEFAULT"), wxT("invalid font") );

    switch ( GetStyle() )
    {
        case wxNORMAL:   return wxT("wxNORMAL");
        case wxSLANT:    return wxT("wxSLANT");
        case wxITALIC:   return wxT("wxITALIC");
        default:         return wxT("wxDEFAULT");
    }
}

wxString wxFontBase::GetWeightString() const
{
    wxCHECK_MSG( Ok(), wxT("wxDEFAULT"), wxT("invalid font") );

    switch ( GetWeight() )
    {
        case wxNORMAL:   return wxT("wxNORMAL");
        case wxBOLD:     return wxT("wxBOLD");
        case wxLIGHT:    return wxT("wxLIGHT");
        default:         return wxT("wxDEFAULT");
    }
}

bool wxFontBase::SetFaceName(const wxString& facename)
{
#if wxUSE_FONTENUM
    if (!wxFontEnumerator::IsValidFacename(facename))
    {
        UnRef();        // make Ok() return false
        return false;
    }
#else // !wxUSE_FONTENUM
    wxUnusedVar(facename);
#endif // wxUSE_FONTENUM/!wxUSE_FONTENUM

    return true;
}


// ----------------------------------------------------------------------------
// wxNativeFontInfo
// ----------------------------------------------------------------------------

// Up to now, there are no native implementations of this function:
void wxNativeFontInfo::SetFaceName(const wxArrayString& facenames)
{
#if wxUSE_FONTENUM
    for (size_t i=0; i < facenames.GetCount(); i++)
    {
        if (wxFontEnumerator::IsValidFacename(facenames[i]))
        {
            SetFaceName(facenames[i]);
            return;
        }
    }

    // set the first valid facename we can find on this system
    wxString validfacename = wxFontEnumerator::GetFacenames().Item(0);
    wxLogTrace(wxT("font"), wxT("Falling back to '%s'"), validfacename.c_str());
    SetFaceName(validfacename);
#else // !wxUSE_FONTENUM
    SetFaceName(facenames[0]);
#endif // wxUSE_FONTENUM/!wxUSE_FONTENUM
}


#ifdef wxNO_NATIVE_FONTINFO

// These are the generic forms of FromString()/ToString.
//
// convert to/from the string representation: format is
//      version;pointsize;family;style;weight;underlined;facename;encoding

bool wxNativeFontInfo::FromString(const wxString& s)
{
    long l;

    wxStringTokenizer tokenizer(s, _T(";"));

    wxString token = tokenizer.GetNextToken();
    //
    //  Ignore the version for now
    //

    token = tokenizer.GetNextToken();
    if ( !token.ToLong(&l) )
        return false;
    pointSize = (int)l;

    token = tokenizer.GetNextToken();
    if ( !token.ToLong(&l) )
        return false;
    family = (wxFontFamily)l;

    token = tokenizer.GetNextToken();
    if ( !token.ToLong(&l) )
        return false;
    style = (wxFontStyle)l;

    token = tokenizer.GetNextToken();
    if ( !token.ToLong(&l) )
        return false;
    weight = (wxFontWeight)l;

    token = tokenizer.GetNextToken();
    if ( !token.ToLong(&l) )
        return false;
    underlined = l != 0;

    faceName = tokenizer.GetNextToken();

#ifndef __WXMAC__
    if( !faceName )
        return false;
#endif

    token = tokenizer.GetNextToken();
    if ( !token.ToLong(&l) )
        return false;
    encoding = (wxFontEncoding)l;

    return true;
}

wxString wxNativeFontInfo::ToString() const
{
    wxString s;

    s.Printf(_T("%d;%d;%d;%d;%d;%d;%s;%d"),
             0,                                 // version
             pointSize,
             family,
             (int)style,
             (int)weight,
             underlined,
             faceName.GetData(),
             (int)encoding);

    return s;
}

void wxNativeFontInfo::Init()
{
    pointSize = 0;
    family = wxFONTFAMILY_DEFAULT;
    style = wxFONTSTYLE_NORMAL;
    weight = wxFONTWEIGHT_NORMAL;
    underlined = false;
    faceName.clear();
    encoding = wxFONTENCODING_DEFAULT;
}

int wxNativeFontInfo::GetPointSize() const
{
    return pointSize;
}

wxFontStyle wxNativeFontInfo::GetStyle() const
{
    return style;
}

wxFontWeight wxNativeFontInfo::GetWeight() const
{
    return weight;
}

bool wxNativeFontInfo::GetUnderlined() const
{
    return underlined;
}

wxString wxNativeFontInfo::GetFaceName() const
{
    return faceName;
}

wxFontFamily wxNativeFontInfo::GetFamily() const
{
    return family;
}

wxFontEncoding wxNativeFontInfo::GetEncoding() const
{
    return encoding;
}

void wxNativeFontInfo::SetPointSize(int pointsize)
{
    pointSize = pointsize;
}

void wxNativeFontInfo::SetStyle(wxFontStyle style_)
{
    style = style_;
}

void wxNativeFontInfo::SetWeight(wxFontWeight weight_)
{
    weight = weight_;
}

void wxNativeFontInfo::SetUnderlined(bool underlined_)
{
    underlined = underlined_;
}

bool wxNativeFontInfo::SetFaceName(const wxString& facename_)
{
    faceName = facename_;
    return true;
}

void wxNativeFontInfo::SetFamily(wxFontFamily family_)
{
    family = family_;
}

void wxNativeFontInfo::SetEncoding(wxFontEncoding encoding_)
{
    encoding = encoding_;
}

#endif // generic wxNativeFontInfo implementation

// conversion to/from user-readable string: this is used in the generic
// versions and under MSW as well because there is no standard font description
// format there anyhow (but there is a well-defined standard for X11 fonts used
// by wxGTK and wxMotif)

#if defined(wxNO_NATIVE_FONTINFO) || defined(__WXMSW__) || defined (__WXPM__)

wxString wxNativeFontInfo::ToUserString() const
{
    wxString desc;

    // first put the adjectives, if any - this is English-centric, of course,
    // but what else can we do?
    if ( GetUnderlined() )
    {
        desc << _("underlined");
    }

    switch ( GetWeight() )
    {
        default:
            wxFAIL_MSG( _T("unknown font weight") );
            // fall through

        case wxFONTWEIGHT_NORMAL:
            break;

        case wxFONTWEIGHT_LIGHT:
            desc << _(" light");
            break;

        case wxFONTWEIGHT_BOLD:
            desc << _(" bold");
            break;
    }

    switch ( GetStyle() )
    {
        default:
            wxFAIL_MSG( _T("unknown font style") );
            // fall through

        case wxFONTSTYLE_NORMAL:
            break;

            // we don't distinguish between the two for now anyhow...
        case wxFONTSTYLE_ITALIC:
        case wxFONTSTYLE_SLANT:
            desc << _(" italic");
            break;
    }

    wxString face = GetFaceName();
    if ( !face.empty() )
    {
        desc << _T(' ') << face;
    }

    int size = GetPointSize();
    if ( size != wxNORMAL_FONT->GetPointSize() )
    {
        desc << _T(' ') << size;
    }

#if wxUSE_FONTMAP
    wxFontEncoding enc = GetEncoding();
    if ( enc != wxFONTENCODING_DEFAULT && enc != wxFONTENCODING_SYSTEM )
    {
        desc << _T(' ') << wxFontMapper::GetEncodingName(enc);
    }
#endif // wxUSE_FONTMAP

    return desc.Strip(wxString::both).MakeLower();
}

bool wxNativeFontInfo::FromUserString(const wxString& s)
{
    // reset to the default state
    Init();

    // parse a more or less free form string
    //
    // TODO: we should handle at least the quoted facenames
    wxStringTokenizer tokenizer(s, _T(";, "), wxTOKEN_STRTOK);

    wxString face;
    unsigned long size;
    bool weightfound = false, pointsizefound = false;
#if wxUSE_FONTMAP
    bool encodingfound = false;
#endif

    while ( tokenizer.HasMoreTokens() )
    {
        wxString token = tokenizer.GetNextToken();

        // normalize it
        token.Trim(true).Trim(false).MakeLower();

        // look for the known tokens
        if ( token == _T("underlined") || token == _("underlined") )
        {
            SetUnderlined(true);
        }
        else if ( token == _T("light") || token == _("light") )
        {
            SetWeight(wxFONTWEIGHT_LIGHT);
            weightfound = true;
        }
        else if ( token == _T("bold") || token == _("bold") )
        {
            SetWeight(wxFONTWEIGHT_BOLD);
            weightfound = true;
        }
        else if ( token == _T("italic") || token == _("italic") )
        {
            SetStyle(wxFONTSTYLE_ITALIC);
        }
        else if ( token.ToULong(&size) )
        {
            SetPointSize(size);
            pointsizefound = true;
        }
        else
        {
#if wxUSE_FONTMAP
            // try to interpret this as an encoding
            wxFontEncoding encoding = wxFontMapper::Get()->CharsetToEncoding(token, false);
            if ( encoding != wxFONTENCODING_DEFAULT &&
                 encoding != wxFONTENCODING_SYSTEM )    // returned when the recognition failed
        {
            SetEncoding(encoding);
                encodingfound = true;
        }
            else
        {
#endif // wxUSE_FONTMAP

                // assume it is the face name
            if ( !face.empty() )
            {
                face += _T(' ');
            }

            face += token;

            // skip the code which resets face below
            continue;

#if wxUSE_FONTMAP
        }
#endif // wxUSE_FONTMAP
        }

        // if we had had the facename, we shouldn't continue appending tokens
        // to it (i.e. "foo bold bar" shouldn't result in the facename "foo
        // bar")
        if ( !face.empty() )
        {
            // NB: the check on the facename is implemented in wxFontBase::SetFaceName
            //     and not in wxNativeFontInfo::SetFaceName thus we need to explicitely
            //     call here wxFontEnumerator::IsValidFacename
            if (
#if wxUSE_FONTENUM
                    !wxFontEnumerator::IsValidFacename(face) ||
#endif // wxUSE_FONTENUM
                    !SetFaceName(face) )
            {
                SetFaceName(wxNORMAL_FONT->GetFaceName());
            }

            face.clear();
        }
    }

    // we might not have flushed it inside the loop
    if ( !face.empty() )
    {
        // NB: the check on the facename is implemented in wxFontBase::SetFaceName
        //     and not in wxNativeFontInfo::SetFaceName thus we need to explicitely
        //     call here wxFontEnumerator::IsValidFacename
        if (
#if wxUSE_FONTENUM
                !wxFontEnumerator::IsValidFacename(face) ||
#endif // wxUSE_FONTENUM
                !SetFaceName(face) )
            {
                SetFaceName(wxNORMAL_FONT->GetFaceName());
            }
    }

    // set point size to default value if size was not given
    if ( !pointsizefound )
        SetPointSize(wxNORMAL_FONT->GetPointSize());

    // set font weight to default value if weight was not given
    if ( !weightfound )
        SetWeight(wxFONTWEIGHT_NORMAL);

#if wxUSE_FONTMAP
    // set font encoding to default value if encoding was not given
    if ( !encodingfound )
        SetEncoding(wxFONTENCODING_SYSTEM);
#endif // wxUSE_FONTMAP

    return true;
}

#endif // generic or wxMSW or wxOS2


// wxFont <-> wxString utilities, used by wxConfig
wxString wxToString(const wxFontBase& font)
{
    return font.IsOk() ? font.GetNativeFontInfoDesc()
                       : wxString();
}

bool wxFromString(const wxString& str, wxFontBase *font)
{
    wxCHECK_MSG( font, false, _T("NULL output parameter") );

    if ( str.empty() )
    {
        *font = wxNullFont;
        return true;
    }

    return font->SetNativeFontInfo(str);
}
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: src/common/fontcmn.cpp
	3	// Purpose: implementation of wxFontBase methods
	4	// Author: Vadim Zeitlin
	5	// Modified by:
	6	// Created: 20.09.99
	7	// RCS-ID: $Id$
	8	// Copyright: (c) wxWidgets team
	9	// Licence: wxWindows licence
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	// ============================================================================
	13	// declarations
	14	// ============================================================================
	15
	16	// ----------------------------------------------------------------------------
	17	// headers
	18	// ----------------------------------------------------------------------------
	19
	20	// For compilers that support precompilation, includes "wx.h".
	21	#include "wx/wxprec.h"
	22
	23	#ifdef __BORLANDC__
	24	#pragma hdrstop
	25	#endif
	26
	27	#include "wx/font.h"
	28
	29	#ifndef WX_PRECOMP
	30	#include "wx/dc.h"
	31	#include "wx/intl.h"
	32	#include "wx/dcscreen.h"
	33	#include "wx/log.h"
	34	#include "wx/gdicmn.h"
	35	#endif // WX_PRECOMP
	36
	37	#if defined(__WXMSW__)
	38	#include "wx/msw/private.h" // includes windows.h for LOGFONT
	39	#include "wx/msw/winundef.h"
	40	#endif
	41
	42	#include "wx/fontutil.h" // for wxNativeFontInfo
	43	#include "wx/fontmap.h"
	44	#include "wx/fontenum.h"
	45
	46	#include "wx/tokenzr.h"
	47
	48	// ============================================================================
	49	// implementation
	50	// ============================================================================
	51
	52	// ----------------------------------------------------------------------------
	53	// helper functions
	54	// ----------------------------------------------------------------------------
	55
	56	static void AdjustFontSize(wxFont& font, wxDC& dc, const wxSize& pixelSize)
	57	{
	58	int currentSize = 0;
	59	int largestGood = 0;
	60	int smallestBad = 0;
	61
	62	bool initialGoodFound = false;
	63	bool initialBadFound = false;
	64
	65	// NB: this assignment was separated from the variable definition
	66	// in order to fix a gcc v3.3.3 compiler crash
	67	currentSize = font.GetPointSize();
	68	while (currentSize > 0)
	69	{
	70	dc.SetFont(font);
	71
	72	// if currentSize (in points) results in a font that is smaller
	73	// than required by pixelSize it is considered a good size
	74	if (dc.GetCharHeight() <= pixelSize.GetHeight() &&
	75	(!pixelSize.GetWidth() \|\|
	76	dc.GetCharWidth() <= pixelSize.GetWidth()))
	77	{
	78	largestGood = currentSize;
	79	initialGoodFound = true;
	80	}
	81	else
	82	{
	83	smallestBad = currentSize;
	84	initialBadFound = true;
	85	}
	86	if (!initialGoodFound)
	87	{
	88	currentSize /= 2;
	89	}
	90	else if (!initialBadFound)
	91	{
	92	currentSize *= 2;
	93	}
	94	else
	95	{
	96	int distance = smallestBad - largestGood;
	97	if (distance == 1)
	98	break;
	99
	100	currentSize = largestGood + distance / 2;
	101	}
	102
	103	font.SetPointSize(currentSize);
	104	}
	105
	106	if (currentSize != largestGood)
	107	font.SetPointSize(largestGood);
	108	}
	109
	110	// ----------------------------------------------------------------------------
	111	// wxFontBase
	112	// ----------------------------------------------------------------------------
	113
	114	wxFontEncoding wxFontBase::ms_encodingDefault = wxFONTENCODING_SYSTEM;
	115
	116	/* static */
	117	void wxFontBase::SetDefaultEncoding(wxFontEncoding encoding)
	118	{
	119	// GetDefaultEncoding() should return something != wxFONTENCODING_DEFAULT
	120	// and, besides, using this value here doesn't make any sense
	121	wxCHECK_RET( encoding != wxFONTENCODING_DEFAULT,
	122	_T("can't set default encoding to wxFONTENCODING_DEFAULT") );
	123
	124	ms_encodingDefault = encoding;
	125	}
	126
	127	wxFontBase::~wxFontBase()
	128	{
	129	// this destructor is required for Darwin
	130	}
	131
	132	/* static */
	133	wxFont *wxFontBase::New(int size,
	134	int family,
	135	int style,
	136	int weight,
	137	bool underlined,
	138	const wxString& face,
	139	wxFontEncoding encoding)
	140	{
	141	return new wxFont(size, family, style, weight, underlined, face, encoding);
	142	}
	143
	144	static inline int flags2Style(int flags)
	145	{
	146	return flags & wxFONTFLAG_ITALIC
	147	? wxFONTSTYLE_ITALIC
	148	: flags & wxFONTFLAG_SLANT
	149	? wxFONTSTYLE_SLANT
	150	: wxFONTSTYLE_NORMAL;
	151	}
	152
	153	static inline int flags2Weight(int flags)
	154	{
	155	return flags & wxFONTFLAG_LIGHT
	156	? wxFONTWEIGHT_LIGHT
	157	: flags & wxFONTFLAG_BOLD
	158	? wxFONTWEIGHT_BOLD
	159	: wxFONTWEIGHT_NORMAL;
	160	}
	161
	162	static inline bool flags2Underlined(int flags)
	163	{
	164	return (flags & wxFONTFLAG_UNDERLINED) != 0;
	165	}
	166
	167	/* static */
	168	wxFont *wxFontBase::New(int pointSize,
	169	wxFontFamily family,
	170	int flags,
	171	const wxString& face,
	172	wxFontEncoding encoding)
	173	{
	174	return New(pointSize, family, flags2Style(flags), flags2Weight(flags),
	175	flags2Underlined(flags), face, encoding);
	176	}
	177
	178	/* static */
	179	wxFont *wxFontBase::New(const wxSize& pixelSize,
	180	int family,
	181	int style,
	182	int weight,
	183	bool underlined,
	184	const wxString& face,
	185	wxFontEncoding encoding)
	186	{
	187	#if defined(__WXMSW__)
	188	return new wxFont(pixelSize, family, style, weight, underlined,
	189	face, encoding);
	190	#else
	191	wxFont *self = New(10, family, style, weight, underlined, face, encoding);
	192	wxScreenDC dc;
	193	AdjustFontSize((wxFont )self, dc, pixelSize);
	194	return self;
	195	#endif
	196	}
	197
	198	/* static */
	199	wxFont *wxFontBase::New(const wxSize& pixelSize,
	200	wxFontFamily family,
	201	int flags,
	202	const wxString& face,
	203	wxFontEncoding encoding)
	204	{
	205	return New(pixelSize, family, flags2Style(flags), flags2Weight(flags),
	206	flags2Underlined(flags), face, encoding);
	207	}
	208
	209	wxSize wxFontBase::GetPixelSize() const
	210	{
	211	wxScreenDC dc;
	212	dc.SetFont((wxFont )this);
	213	return wxSize(dc.GetCharWidth(), dc.GetCharHeight());
	214	}
	215
	216	bool wxFontBase::IsUsingSizeInPixels() const
	217	{
	218	return false;
	219	}
	220
	221	void wxFontBase::SetPixelSize( const wxSize& pixelSize )
	222	{
	223	wxScreenDC dc;
	224	AdjustFontSize((wxFont )this, dc, pixelSize);
	225	}
	226
	227	/* static */
	228	wxFont *wxFontBase::New(const wxNativeFontInfo& info)
	229	{
	230	return new wxFont(info);
	231	}
	232
	233	/* static */
	234	wxFont *wxFontBase::New(const wxString& strNativeFontDesc)
	235	{
	236	wxNativeFontInfo fontInfo;
	237	if ( !fontInfo.FromString(strNativeFontDesc) )
	238	return new wxFont(*wxNORMAL_FONT);
	239
	240	return New(fontInfo);
	241	}
	242
	243	bool wxFontBase::IsFixedWidth() const
	244	{
	245	return GetFamily() == wxFONTFAMILY_TELETYPE;
	246	}
	247
	248	void wxFontBase::DoSetNativeFontInfo(const wxNativeFontInfo& info)
	249	{
	250	#ifdef wxNO_NATIVE_FONTINFO
	251	SetPointSize(info.pointSize);
	252	SetFamily(info.family);
	253	SetStyle(info.style);
	254	SetWeight(info.weight);
	255	SetUnderlined(info.underlined);
	256	SetFaceName(info.faceName);
	257	SetEncoding(info.encoding);
	258	#else
	259	(void)info;
	260	#endif
	261	}
	262
	263	wxString wxFontBase::GetNativeFontInfoDesc() const
	264	{
	265	wxString fontDesc;
	266	const wxNativeFontInfo *fontInfo = GetNativeFontInfo();
	267	if ( fontInfo )
	268	{
	269	fontDesc = fontInfo->ToString();
	270	wxASSERT_MSG(!fontDesc.empty(), wxT("This should be a non-empty string!"));
	271	}
	272	else
	273	{
	274	wxFAIL_MSG(wxT("Derived class should have created the wxNativeFontInfo!"));
	275	}
	276
	277	return fontDesc;
	278	}
	279
	280	wxString wxFontBase::GetNativeFontInfoUserDesc() const
	281	{
	282	wxString fontDesc;
	283	const wxNativeFontInfo *fontInfo = GetNativeFontInfo();
	284	if ( fontInfo )
	285	{
	286	fontDesc = fontInfo->ToUserString();
	287	wxASSERT_MSG(!fontDesc.empty(), wxT("This should be a non-empty string!"));
	288	}
	289	else
	290	{
	291	wxFAIL_MSG(wxT("Derived class should have created the wxNativeFontInfo!"));
	292	}
	293
	294	return fontDesc;
	295	}
	296
	297	bool wxFontBase::SetNativeFontInfo(const wxString& info)
	298	{
	299	wxNativeFontInfo fontInfo;
	300	if ( !info.empty() && fontInfo.FromString(info) )
	301	{
	302	SetNativeFontInfo(fontInfo);
	303	return true;
	304	}
	305
	306	return false;
	307	}
	308
	309	bool wxFontBase::SetNativeFontInfoUserDesc(const wxString& info)
	310	{
	311	wxNativeFontInfo fontInfo;
	312	if ( !info.empty() && fontInfo.FromUserString(info) )
	313	{
	314	SetNativeFontInfo(fontInfo);
	315	return true;
	316	}
	317
	318	return false;
	319	}
	320
	321	bool wxFontBase::operator==(const wxFont& font) const
	322	{
	323	// either it is the same font, i.e. they share the same common data or they
	324	// have different ref datas but still describe the same font
	325	return IsSameAs(font) \|\|
	326	(
	327	Ok() == font.Ok() &&
	328	GetPointSize() == font.GetPointSize() &&
	329	// in wxGTK1 GetPixelSize() calls GetInternalFont() which uses
	330	// operator==() resulting in infinite recursion so we can't use it
	331	// in that port
	332	#if !defined(__WXGTK__) \|\| defined(__WXGTK20__)
	333	GetPixelSize() == font.GetPixelSize() &&
	334	#endif
	335	GetFamily() == font.GetFamily() &&
	336	GetStyle() == font.GetStyle() &&
	337	GetWeight() == font.GetWeight() &&
	338	GetUnderlined() == font.GetUnderlined() &&
	339	GetFaceName().IsSameAs(font.GetFaceName(), false) &&
	340	GetEncoding() == font.GetEncoding()
	341	);
	342	}
	343
	344	wxString wxFontBase::GetFamilyString() const
	345	{
	346	wxCHECK_MSG( Ok(), wxT("wxDEFAULT"), wxT("invalid font") );
	347
	348	switch ( GetFamily() )
	349	{
	350	case wxDECORATIVE: return wxT("wxDECORATIVE");
	351	case wxROMAN: return wxT("wxROMAN");
	352	case wxSCRIPT: return wxT("wxSCRIPT");
	353	case wxSWISS: return wxT("wxSWISS");
	354	case wxMODERN: return wxT("wxMODERN");
	355	case wxTELETYPE: return wxT("wxTELETYPE");
	356	default: return wxT("wxDEFAULT");
	357	}
	358	}
	359
	360	wxString wxFontBase::GetStyleString() const
	361	{
	362	wxCHECK_MSG( Ok(), wxT("wxDEFAULT"), wxT("invalid font") );
	363
	364	switch ( GetStyle() )
	365	{
	366	case wxNORMAL: return wxT("wxNORMAL");
	367	case wxSLANT: return wxT("wxSLANT");
	368	case wxITALIC: return wxT("wxITALIC");
	369	default: return wxT("wxDEFAULT");
	370	}
	371	}
	372
	373	wxString wxFontBase::GetWeightString() const
	374	{
	375	wxCHECK_MSG( Ok(), wxT("wxDEFAULT"), wxT("invalid font") );
	376
	377	switch ( GetWeight() )
	378	{
	379	case wxNORMAL: return wxT("wxNORMAL");
	380	case wxBOLD: return wxT("wxBOLD");
	381	case wxLIGHT: return wxT("wxLIGHT");
	382	default: return wxT("wxDEFAULT");
	383	}
	384	}
	385
	386	bool wxFontBase::SetFaceName(const wxString& facename)
	387	{
	388	#if wxUSE_FONTENUM
	389	if (!wxFontEnumerator::IsValidFacename(facename))
	390	{
	391	UnRef(); // make Ok() return false
	392	return false;
	393	}
	394	#else // !wxUSE_FONTENUM
	395	wxUnusedVar(facename);
	396	#endif // wxUSE_FONTENUM/!wxUSE_FONTENUM
	397
	398	return true;
	399	}
	400
	401
	402	// ----------------------------------------------------------------------------
	403	// wxNativeFontInfo
	404	// ----------------------------------------------------------------------------
	405
	406	// Up to now, there are no native implementations of this function:
	407	void wxNativeFontInfo::SetFaceName(const wxArrayString& facenames)
	408	{
	409	#if wxUSE_FONTENUM
	410	for (size_t i=0; i < facenames.GetCount(); i++)
	411	{
	412	if (wxFontEnumerator::IsValidFacename(facenames[i]))
	413	{
	414	SetFaceName(facenames[i]);
	415	return;
	416	}
	417	}
	418
	419	// set the first valid facename we can find on this system
	420	wxString validfacename = wxFontEnumerator::GetFacenames().Item(0);
	421	wxLogTrace(wxT("font"), wxT("Falling back to '%s'"), validfacename.c_str());
	422	SetFaceName(validfacename);
	423	#else // !wxUSE_FONTENUM
	424	SetFaceName(facenames[0]);
	425	#endif // wxUSE_FONTENUM/!wxUSE_FONTENUM
	426	}
	427
	428
	429	#ifdef wxNO_NATIVE_FONTINFO
	430
	431	// These are the generic forms of FromString()/ToString.
	432	//
	433	// convert to/from the string representation: format is
	434	// version;pointsize;family;style;weight;underlined;facename;encoding
	435
	436	bool wxNativeFontInfo::FromString(const wxString& s)
	437	{
	438	long l;
	439
	440	wxStringTokenizer tokenizer(s, _T(";"));
	441
	442	wxString token = tokenizer.GetNextToken();
	443	//
	444	// Ignore the version for now
	445	//
	446
	447	token = tokenizer.GetNextToken();
	448	if ( !token.ToLong(&l) )
	449	return false;
	450	pointSize = (int)l;
	451
	452	token = tokenizer.GetNextToken();
	453	if ( !token.ToLong(&l) )
	454	return false;
	455	family = (wxFontFamily)l;
	456
	457	token = tokenizer.GetNextToken();
	458	if ( !token.ToLong(&l) )
	459	return false;
	460	style = (wxFontStyle)l;
	461
	462	token = tokenizer.GetNextToken();
	463	if ( !token.ToLong(&l) )
	464	return false;
	465	weight = (wxFontWeight)l;
	466
	467	token = tokenizer.GetNextToken();
	468	if ( !token.ToLong(&l) )
	469	return false;
	470	underlined = l != 0;
	471
	472	faceName = tokenizer.GetNextToken();
	473
	474	#ifndef __WXMAC__
	475	if( !faceName )
	476	return false;
	477	#endif
	478
	479	token = tokenizer.GetNextToken();
	480	if ( !token.ToLong(&l) )
	481	return false;
	482	encoding = (wxFontEncoding)l;
	483
	484	return true;
	485	}
	486
	487	wxString wxNativeFontInfo::ToString() const
	488	{
	489	wxString s;
	490
	491	s.Printf(_T("%d;%d;%d;%d;%d;%d;%s;%d"),
	492	0, // version
	493	pointSize,
	494	family,
	495	(int)style,
	496	(int)weight,
	497	underlined,
	498	faceName.GetData(),
	499	(int)encoding);
	500
	501	return s;
	502	}
	503
	504	void wxNativeFontInfo::Init()
	505	{
	506	pointSize = 0;
	507	family = wxFONTFAMILY_DEFAULT;
	508	style = wxFONTSTYLE_NORMAL;
	509	weight = wxFONTWEIGHT_NORMAL;
	510	underlined = false;
	511	faceName.clear();
	512	encoding = wxFONTENCODING_DEFAULT;
	513	}
	514
	515	int wxNativeFontInfo::GetPointSize() const
	516	{
	517	return pointSize;
	518	}
	519
	520	wxFontStyle wxNativeFontInfo::GetStyle() const
	521	{
	522	return style;
	523	}
	524
	525	wxFontWeight wxNativeFontInfo::GetWeight() const
	526	{
	527	return weight;
	528	}
	529
	530	bool wxNativeFontInfo::GetUnderlined() const
	531	{
	532	return underlined;
	533	}
	534
	535	wxString wxNativeFontInfo::GetFaceName() const
	536	{
	537	return faceName;
	538	}
	539
	540	wxFontFamily wxNativeFontInfo::GetFamily() const
	541	{
	542	return family;
	543	}
	544
	545	wxFontEncoding wxNativeFontInfo::GetEncoding() const
	546	{
	547	return encoding;
	548	}
	549
	550	void wxNativeFontInfo::SetPointSize(int pointsize)
	551	{
	552	pointSize = pointsize;
	553	}
	554
	555	void wxNativeFontInfo::SetStyle(wxFontStyle style_)
	556	{
	557	style = style_;
	558	}
	559
	560	void wxNativeFontInfo::SetWeight(wxFontWeight weight_)
	561	{
	562	weight = weight_;
	563	}
	564
	565	void wxNativeFontInfo::SetUnderlined(bool underlined_)
	566	{
	567	underlined = underlined_;
	568	}
	569
	570	bool wxNativeFontInfo::SetFaceName(const wxString& facename_)
	571	{
	572	faceName = facename_;
	573	return true;
	574	}
	575
	576	void wxNativeFontInfo::SetFamily(wxFontFamily family_)
	577	{
	578	family = family_;
	579	}
	580
	581	void wxNativeFontInfo::SetEncoding(wxFontEncoding encoding_)
	582	{
	583	encoding = encoding_;
	584	}
	585
	586	#endif // generic wxNativeFontInfo implementation
	587
	588	// conversion to/from user-readable string: this is used in the generic
	589	// versions and under MSW as well because there is no standard font description
	590	// format there anyhow (but there is a well-defined standard for X11 fonts used
	591	// by wxGTK and wxMotif)
	592
	593	#if defined(wxNO_NATIVE_FONTINFO) \|\| defined(__WXMSW__) \|\| defined (__WXPM__)
	594
	595	wxString wxNativeFontInfo::ToUserString() const
	596	{
	597	wxString desc;
	598
	599	// first put the adjectives, if any - this is English-centric, of course,
	600	// but what else can we do?
	601	if ( GetUnderlined() )
	602	{
	603	desc << _("underlined");
	604	}
	605
	606	switch ( GetWeight() )
	607	{
	608	default:
	609	wxFAIL_MSG( _T("unknown font weight") );
	610	// fall through
	611
	612	case wxFONTWEIGHT_NORMAL:
	613	break;
	614
	615	case wxFONTWEIGHT_LIGHT:
	616	desc << _(" light");
	617	break;
	618
	619	case wxFONTWEIGHT_BOLD:
	620	desc << _(" bold");
	621	break;
	622	}
	623
	624	switch ( GetStyle() )
	625	{
	626	default:
	627	wxFAIL_MSG( _T("unknown font style") );
	628	// fall through
	629
	630	case wxFONTSTYLE_NORMAL:
	631	break;
	632
	633	// we don't distinguish between the two for now anyhow...
	634	case wxFONTSTYLE_ITALIC:
	635	case wxFONTSTYLE_SLANT:
	636	desc << _(" italic");
	637	break;
	638	}
	639
	640	wxString face = GetFaceName();
	641	if ( !face.empty() )
	642	{
	643	desc << _T(' ') << face;
	644	}
	645
	646	int size = GetPointSize();
	647	if ( size != wxNORMAL_FONT->GetPointSize() )
	648	{
	649	desc << _T(' ') << size;
	650	}
	651
	652	#if wxUSE_FONTMAP
	653	wxFontEncoding enc = GetEncoding();
	654	if ( enc != wxFONTENCODING_DEFAULT && enc != wxFONTENCODING_SYSTEM )
	655	{
	656	desc << _T(' ') << wxFontMapper::GetEncodingName(enc);
	657	}
	658	#endif // wxUSE_FONTMAP
	659
	660	return desc.Strip(wxString::both).MakeLower();
	661	}
	662
	663	bool wxNativeFontInfo::FromUserString(const wxString& s)
	664	{
	665	// reset to the default state
	666	Init();
	667
	668	// parse a more or less free form string
	669	//
	670	// TODO: we should handle at least the quoted facenames
	671	wxStringTokenizer tokenizer(s, _T(";, "), wxTOKEN_STRTOK);
	672
	673	wxString face;
	674	unsigned long size;
	675	bool weightfound = false, pointsizefound = false;
	676	#if wxUSE_FONTMAP
	677	bool encodingfound = false;
	678	#endif
	679
	680	while ( tokenizer.HasMoreTokens() )
	681	{
	682	wxString token = tokenizer.GetNextToken();
	683
	684	// normalize it
	685	token.Trim(true).Trim(false).MakeLower();
	686
	687	// look for the known tokens
	688	if ( token == _T("underlined") \|\| token == _("underlined") )
	689	{
	690	SetUnderlined(true);
	691	}
	692	else if ( token == _T("light") \|\| token == _("light") )
	693	{
	694	SetWeight(wxFONTWEIGHT_LIGHT);
	695	weightfound = true;
	696	}
	697	else if ( token == _T("bold") \|\| token == _("bold") )
	698	{
	699	SetWeight(wxFONTWEIGHT_BOLD);
	700	weightfound = true;
	701	}
	702	else if ( token == _T("italic") \|\| token == _("italic") )
	703	{
	704	SetStyle(wxFONTSTYLE_ITALIC);
	705	}
	706	else if ( token.ToULong(&size) )
	707	{
	708	SetPointSize(size);
	709	pointsizefound = true;
	710	}
	711	else
	712	{
	713	#if wxUSE_FONTMAP
	714	// try to interpret this as an encoding
	715	wxFontEncoding encoding = wxFontMapper::Get()->CharsetToEncoding(token, false);
	716	if ( encoding != wxFONTENCODING_DEFAULT &&
	717	encoding != wxFONTENCODING_SYSTEM ) // returned when the recognition failed
	718	{
	719	SetEncoding(encoding);
	720	encodingfound = true;
	721	}
	722	else
	723	{
	724	#endif // wxUSE_FONTMAP
	725
	726	// assume it is the face name
	727	if ( !face.empty() )
	728	{
	729	face += _T(' ');
	730	}
	731
	732	face += token;
	733
	734	// skip the code which resets face below
	735	continue;
	736
	737	#if wxUSE_FONTMAP
	738	}
	739	#endif // wxUSE_FONTMAP
	740	}
	741
	742	// if we had had the facename, we shouldn't continue appending tokens
	743	// to it (i.e. "foo bold bar" shouldn't result in the facename "foo
	744	// bar")
	745	if ( !face.empty() )
	746	{
	747	// NB: the check on the facename is implemented in wxFontBase::SetFaceName
	748	// and not in wxNativeFontInfo::SetFaceName thus we need to explicitely
	749	// call here wxFontEnumerator::IsValidFacename
	750	if (
	751	#if wxUSE_FONTENUM
	752	!wxFontEnumerator::IsValidFacename(face) \|\|
	753	#endif // wxUSE_FONTENUM
	754	!SetFaceName(face) )
	755	{
	756	SetFaceName(wxNORMAL_FONT->GetFaceName());
	757	}
	758
	759	face.clear();
	760	}
	761	}
	762
	763	// we might not have flushed it inside the loop
	764	if ( !face.empty() )
	765	{
	766	// NB: the check on the facename is implemented in wxFontBase::SetFaceName
	767	// and not in wxNativeFontInfo::SetFaceName thus we need to explicitely
	768	// call here wxFontEnumerator::IsValidFacename
	769	if (
	770	#if wxUSE_FONTENUM
	771	!wxFontEnumerator::IsValidFacename(face) \|\|
	772	#endif // wxUSE_FONTENUM
	773	!SetFaceName(face) )
	774	{
	775	SetFaceName(wxNORMAL_FONT->GetFaceName());
	776	}
	777	}
	778
	779	// set point size to default value if size was not given
	780	if ( !pointsizefound )
	781	SetPointSize(wxNORMAL_FONT->GetPointSize());
	782
	783	// set font weight to default value if weight was not given
	784	if ( !weightfound )
	785	SetWeight(wxFONTWEIGHT_NORMAL);
	786
	787	#if wxUSE_FONTMAP
	788	// set font encoding to default value if encoding was not given
	789	if ( !encodingfound )
	790	SetEncoding(wxFONTENCODING_SYSTEM);
	791	#endif // wxUSE_FONTMAP
	792
	793	return true;
	794	}
	795
	796	#endif // generic or wxMSW or wxOS2
	797
	798
	799	// wxFont <-> wxString utilities, used by wxConfig
	800	wxString wxToString(const wxFontBase& font)
	801	{
	802	return font.IsOk() ? font.GetNativeFontInfoDesc()
	803	: wxString();
	804	}
	805
	806	bool wxFromString(const wxString& str, wxFontBase *font)
	807	{
	808	wxCHECK_MSG( font, false, _T("NULL output parameter") );
	809
	810	if ( str.empty() )
	811	{
	812	*font = wxNullFont;
	813	return true;
	814	}
	815
	816	return font->SetNativeFontInfo(str);
	817	}
	818
	819