tt::true_type_font Class Reference

Inheritance diagram for tt::true_type_font:

Public Member Functions
	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
bool	loaded () const noexcept override
	Return if the font is loaded.
tt::glyph_id	find_glyph (char32_t c) const noexcept override
	Get the glyph for a code-point.
std::optional< tt::glyph_id >	load_glyph (tt::glyph_id glyph_id, graphic_path &path) const noexcept override
	Load a glyph into a path.
bool	load_glyph_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.
font_variant	font_variant () const noexcept

Additional Inherited Members
Data Fields inherited from tt::font
std::string	family_name
	The description is filled with information parsed from the font.
std::string	sub_family_name
bool	monospace = false
bool	serif = false
bool	italic = false
bool	condensed = false
font_weight	weight = font_weight::Regular
float	optical_size = 12.0
tt::unicode_mask	unicode_mask
float	xHeight = 0.0
float	HHeight = 0.0
float	DigitWidth = 0.0
std::vector< tt::font * >	fallback_chain
	List of fonts to use as a fallback for this font.

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.

load_glyph()

std::optional< tt::glyph_id > tt::true_type_font::load_glyph ( 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.

load_glyph_metrics()

bool tt::true_type_font::load_glyph_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.

loaded()

bool tt::true_type_font::loaded ( ) const

inlineoverridevirtualnoexcept

Return if the font is loaded.

Returns

true if the font is fully loaded, false if only metadata of the font is available.

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