textrender.hxx

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#ifndef INCLUDED_VCL_INC_UNX_CAIROFONTIMPL_HXX
#define INCLUDED_VCL_INC_UNX_CAIROFONTIMPL_HXX

#include "salgdi.hxx"

#include <config_cairo_canvas.h>

class ImplLayoutArgs;
class ImplFontMetricData;
class PhysicalFontCollection;
class PhysicalFontFace;

class TextRenderImpl
{
public:
    // can't call ReleaseFonts here, as the destructor just calls this classes SetFont (pure virtual)!
    virtual ~TextRenderImpl() {}

    virtual void                    SetTextColor( Color nColor ) = 0;
    virtual void                    SetFont(LogicalFontInstance*, int nFallbackLevel) = 0;
    void ReleaseFonts() { SetFont(nullptr, 0); }
    virtual void                    GetFontMetric( ImplFontMetricDataRef&, int nFallbackLevel ) = 0;
    virtual FontCharMapRef          GetFontCharMap() const = 0;
    virtual bool                    GetFontCapabilities(vcl::FontCapabilities &rFontCapabilities) const = 0;
    virtual void                    GetDevFontList( PhysicalFontCollection* ) = 0;
    virtual void                    ClearDevFontCache() = 0;
    virtual bool                    AddTempDevFont( PhysicalFontCollection*, const OUString& rFileURL, const OUString& rFontName ) = 0;
    virtual bool                    CreateFontSubset(
                                        const OUString& rToFile,
                                        const PhysicalFontFace*,
                                        const sal_GlyphId* pGlyphIDs,
                                        const sal_uInt8* pEncoding,
                                        sal_Int32* pWidths,
                                        int nGlyphs,
                                        FontSubsetInfo& rInfo) = 0;

    virtual const void*             GetEmbedFontData(const PhysicalFontFace*, long* pDataLen) = 0;
    virtual void                    FreeEmbedFontData( const void* pData, long nDataLen ) = 0;
    virtual void                    GetGlyphWidths(
                                        const PhysicalFontFace*,
                                        bool bVertical,
                                        std::vector< sal_Int32 >& rWidths,
                                        Ucs2UIntMap& rUnicodeEnc ) = 0;

    virtual std::unique_ptr<GenericSalLayout>
                                    GetTextLayout(int nFallbackLevel) = 0;
    virtual void                    DrawTextLayout(const GenericSalLayout&, const SalGraphics&) = 0;
#if ENABLE_CAIRO_CANVAS
    virtual SystemFontData          GetSysFontData( int nFallbackLevel ) const = 0;
#endif // ENABLE_CAIRO_CANVAS
};

#endif

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