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LibFont: Font::get_glyph() now returns nullptr if glyph does not exist 

This allows getting glyphs with a single hash lookup
This commit is contained in:
Bananymous 2024-05-31 13:05:07 +03:00
parent b2a4797d16
commit f12ffa92a0
2 changed files with 8 additions and 12 deletions
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10
LibFont/Font.cpp
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@ -274,14 +274,4 @@ namespace LibFont
return result; return result;
} }
bool Font::has_glyph(uint32_t codepoint) const
{
return m_glyph_offsets.contains(codepoint);
}
const uint8_t* Font::glyph(uint32_t codepoint) const
{
return m_glyph_data.data() + m_glyph_offsets[codepoint];
}
} }

10
LibFont/include/LibFont/Font.h
View File

@ -19,8 +19,14 @@ namespace LibFont
uint32_t height() const { return m_height; } uint32_t height() const { return m_height; }
uint32_t pitch() const { return m_pitch; } uint32_t pitch() const { return m_pitch; }
bool has_glyph(uint32_t) const; bool has_glyph(uint32_t codepoint) const { return glyph(codepoint) != nullptr; }
const uint8_t* glyph(uint32_t) const; const uint8_t* glyph(uint32_t codepoint) const
{
auto it = m_glyph_offsets.find(codepoint);
if (it == m_glyph_offsets.end())
return nullptr;
return m_glyph_data.data() + it->value;
}
private: private:
static BAN::ErrorOr<Font> parse_psf1(BAN::ConstByteSpan); static BAN::ErrorOr<Font> parse_psf1(BAN::ConstByteSpan);