tt::true_type_font Class Reference

Inheritance diagram for tt::true_type_font:

Public Member Functions
	true_type_font (std::span< std::byte const > bytes)
	Load a true type font.
	true_type_font (std::unique_ptr< resource_view > view)
	true_type_font (URL const &url)
	true_type_font (true_type_font const &other)=delete
true_type_font &	operator= (true_type_font const &other)=delete
	true_type_font (true_type_font &&other)=delete
true_type_font &	operator= (true_type_font &&other)=delete
tt::glyph_id	find_glyph (char32_t c) const noexcept override
	Get the glyph for a code-point.
std::optional< tt::glyph_id >	loadGlyph (tt::glyph_id glyph_id, graphic_path &path) const noexcept override
	Load a glyph into a path.
bool	loadglyph_metrics (tt::glyph_id glyph_id, glyph_metrics &metrics, tt::glyph_id lookahead_glyph_id=tt::glyph_id{}) const noexcept override
	Load a glyphMetrics into a path.
Public Member Functions inherited from tt::font
	font (font const &)=delete
font &	operator= (font const &)=delete
	font (font &&)=delete
font &	operator= (font &&)=delete
font_glyph_ids	find_glyph (grapheme g) const noexcept
	Get the glyphs for a grapheme.

Additional Inherited Members
Data Fields inherited from tt::font
font_description	description
	The description is filled with information parsed from the font.

Constructor & Destructor Documentation

true_type_font()

tt::true_type_font::true_type_font ( std::span< std::byte const > bytes )

inline

Load a true type font.

The methods in this class will parse the true-type font at run time. This also means that the bytes passed into this constructor will need to remain available.

Member Function Documentation

find_glyph()

tt::glyph_id tt::true_type_font::find_glyph ( char32_t c ) const

overridevirtualnoexcept

Get the glyph for a code-point.

Returns

glyph-index, or invalid when not found or error.

Implements tt::font.

loadGlyph()

std::optional< tt::glyph_id > tt::true_type_font::loadGlyph ( tt::glyph_id glyph_id, graphic_path & path ) const

overridevirtualnoexcept

Load a glyph into a path.

The glyph is directly loaded from the font file.

Parameters

glyph_id	the index of a glyph inside the font.
path	The path constructed by the loader.

Returns

empty on failure, or the glyphID of the metrics to use.

Implements tt::font.

loadglyph_metrics()

bool tt::true_type_font::loadglyph_metrics ( tt::glyph_id glyph_id, glyph_metrics & metrics, tt::glyph_id lookahead_glyph_id = tt::glyph_id{} ) const

overridevirtualnoexcept

Load a glyphMetrics into a path.

The glyph is directly loaded from the font file.

Parameters

glyph_id	the index of a glyph inside the font.
metrics	The metrics constructed by the loader.
lookahead_glyph_id	The next glyph, used for determining kerning.

Returns

1 on success, 0 on not implemented

Implements tt::font.

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The documentation for this class was generated from the following file:

• hikogui/src/ttauri/text/true_type_font.hpp