get_or_rasterize() [2/2]

const GlyphMetrics * MayaFlux::Portal::Text::GlyphAtlas::get_or_rasterize

(

FT_ULong

codepoint

)

Convenience: look up by Unicode codepoint.

Calls FT_Get_Char_Index internally. Prefer the glyph_index overload when integrating with HarfBuzz output.

Parameters

codepoint

Unicode codepoint (e.g. U+0041 for 'A').

Returns

Pointer to cached GlyphMetrics, or nullptr on failure.

Definition at line 32 of file GlyphAtlas.cpp.

{
    if (!m_face.is_loaded()) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::API,
            "GlyphAtlas::get_or_rasterize -- FontFace not loaded");
        return nullptr;
    }
 
    const FT_UInt idx = FT_Get_Char_Index(m_face.get_face(), codepoint);
    if (idx == 0) {
        MF_WARN(Journal::Component::Portal, Journal::Context::API,
            "GlyphAtlas: no glyph for codepoint U+{:04X}", static_cast<uint32_t>(codepoint));
        return nullptr;
    }
 
    return get_or_rasterize(idx);
}

References MayaFlux::Journal::API, MayaFlux::Portal::Text::FontFace::get_face(), get_or_rasterize(), MayaFlux::Portal::Text::FontFace::is_loaded(), m_face, MF_ERROR, MF_WARN, and MayaFlux::Journal::Portal.

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