cairotextrender.hxx

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 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
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#ifndef INCLUDED_VCL_INC_UNX_CAIROTEXTRENDER_HXX
#define INCLUDED_VCL_INC_UNX_CAIROTEXTRENDER_HXX

#include <textrender.hxx>

class FreetypeFont;
class GlyphCache;
typedef struct _cairo cairo_t;

class VCL_DLLPUBLIC CairoTextRender : public TextRenderImpl
{
    FreetypeFont*   mpFreetypeFont[ MAX_FALLBACK ];

    Color           mnTextColor;

protected:
    virtual GlyphCache&         getPlatformGlyphCache() = 0;
    virtual cairo_t*            getCairoContext() = 0;
    virtual void                getSurfaceOffset(double& nDX, double& nDY) = 0;
    virtual void                releaseCairoContext(cairo_t* cr) = 0;

    void                        setFont(LogicalFontInstance *pEntry, int nFallbackLevel);

    virtual void                clipRegion(cairo_t* cr) = 0;

public:
                                CairoTextRender();


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

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

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

#endif

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