font.cpp

很牛的GUI源码wxWidgets-2.8.0.zip 可在多种平台下运行.

        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
// ----------------------------------------------------------------------------

bool wxFont::Create(const wxNativeFontInfo& info)
{
    return Create(
        info.pointSize, info.family, info.style, info.weight,
        info.underlined, info.faceName, info.encoding );
}

wxFont::wxFont(const wxString& fontdesc)
{
    wxNativeFontInfo info;
    if ( info.FromString(fontdesc) )
        (void)Create(info);
}

bool wxFont::Create(int pointSize,
    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(
        12, wxDEFAULT, wxFONTSTYLE_NORMAL, wxFONTWEIGHT_NORMAL,
        false, wxEmptyString, wxFONTENCODING_DEFAULT );

    M_FONTDATA->m_macThemeFontID = themeFontID ;
    RealizeResource();

    return true;
}

wxFont::~wxFont()
{
}

bool wxFont::RealizeResource()
{
    M_FONTDATA->MacFindFont();

    return true;
}

void wxFont::SetEncoding(wxFontEncoding encoding)
{
    Unshare();

    M_FONTDATA->m_encoding = encoding;

    RealizeResource();
}

void wxFont::Unshare()
{
    // Don't change shared data
    if (!m_refData)
    {
        m_refData = new wxFontRefData();
    }
    else
    {
        wxFontRefData* ref = new wxFontRefData(*(wxFontRefData*)m_refData);
        UnRef();
        m_refData = ref;
    }
}

void wxFont::SetPointSize(int pointSize)
{
    Unshare();

    M_FONTDATA->m_pointSize = pointSize;

    RealizeResource();
}

void wxFont::SetFamily(int family)
{
    Unshare();

    M_FONTDATA->m_family = family;

    RealizeResource();
}

void wxFont::SetStyle(int style)
{
    Unshare();

    M_FONTDATA->m_style = style;

    RealizeResource();
}

void wxFont::SetWeight(int weight)
{
    Unshare();

    M_FONTDATA->m_weight = weight;

    RealizeResource();
}

bool wxFont::SetFaceName(const wxString& faceName)
{
    Unshare();

    M_FONTDATA->m_faceName = faceName;

    RealizeResource();

    return wxFontBase::SetFaceName(faceName);
}

void wxFont::SetUnderlined(bool underlined)
{
    Unshare();

    M_FONTDATA->m_underlined = underlined;

    RealizeResource();
}

void wxFont::SetNoAntiAliasing( bool no )
{
    Unshare();

    M_FONTDATA->SetNoAntiAliasing( no );

    RealizeResource();
}

// ----------------------------------------------------------------------------
// 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
    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
{
    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() 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);
}