// 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 <font/FontSelectPattern.hxx>
class LogicalFontInstance;
namespace vcl::font
{ class FontSelectPattern;
class FontSubstitution
{ // TODO: there is more commonality between the different substitutions protected: virtual ~FontSubstitution() {}
};
/// Abstracts the concept of finding the best font to support an incomplete font class GlyphFallbackFontSubstitution : public FontSubstitution
{ public: virtualbool FindFontSubstitute(vcl::font::FontSelectPattern&,
LogicalFontInstance* pLogicalFont,
OUString& rMissingCodes) const = 0;
};
/** Abstracts the concept of a configured font substitution before the availabilityoftheoriginallyselectedfonthasbeenchecked.
*/ class PreMatchFontSubstitution : public FontSubstitution
{ public: virtualbool FindFontSubstitute(vcl::font::FontSelectPattern&) const = 0;
};
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