fontsubstitution.hxx

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// nowadays these substitutions are needed for backward compatibility and tight platform integration:
// - substitutions from configuration entries (Tools->Options->FontReplacement and/or fontconfig)
// - device specific substitutions (e.g. for PS printer builtin fonts)
// - substitutions for missing fonts defined by configuration entries (generic and/or platform dependent fallbacks)
// - substitutions for missing fonts defined by multi-token fontnames (e.g. fontname="SpecialFont;FallbackA;FallbackB")
// - substitutions for incomplete fonts (implicit, generic, EUDC and/or platform dependent fallbacks)
// - substitutions for missing symbol fonts by translating code points into other symbol fonts
 
#pragma once
 
#include <sal/config.h>
 
#include <rtl/ustring.hxx>
 
#include <vcl/rendercontext/AddFontSubstituteFlags.hxx>
 
#include <font/FontSelectPattern.hxx>
 
namespace vcl::font
{
class FontSelectPattern;
 
class FontSubstitution
{
    // TODO: there is more commonality between the different substitutions
protected:
    virtual ~FontSubstitution() {}
};
 
class GlyphFallbackFontSubstitution : public FontSubstitution
{
public:
    virtual bool FindFontSubstitute(vcl::font::FontSelectPattern&,
                                    LogicalFontInstance* pLogicalFont,
                                    OUString& rMissingCodes) const = 0;
};
 
class PreMatchFontSubstitution : public FontSubstitution
{
public:
    virtual bool FindFontSubstitute(vcl::font::FontSelectPattern&) const = 0;
};
 
void ImplFontSubstitute(OUString& rFontName);
}
 
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