unicode_line_break.hpp File Reference

#include "unicode_general_category.hpp"
#include "unicode_grapheme_cluster_break.hpp"
#include "unicode_east_asian_width.hpp"
#include "unicode_break_opportunity.hpp"
#include "../utility.hpp"
#include "../cast.hpp"
#include "../assert.hpp"
#include "../math.hpp"
#include <cstdint>
#include <vector>
#include <algorithm>
#include <numeric>

Go to the source code of this file.

Data Structures
struct	v1::detail::unicode_line_break_info
	Combined unicode_line_break_class and unicode_line_break_opportunity. More...

Namespaces
namespace	v1
	DOXYGEN BUG.

Typedefs
using	v1::detail::unicode_line_break_info_vector = std::vector<unicode_line_break_info>
using	v1::detail::unicode_line_break_info_iterator = unicode_line_break_info_vector::iterator
using	v1::detail::unicode_line_break_info_const_iterator = unicode_line_break_info_vector::const_iterator

Enumerations
enum class	v1::unicode_line_break_class : uint8_t {   BK , CR , LF , CM ,   NL , SG , WJ , ZW ,   GL , SP , ZWJ , B2 ,   BA , BB , HY , CB ,   CL , CP , EX , IN ,   NS , OP , QU , IS ,   NU , PO , PR , SY ,   AI , AL , CJ , EB ,   EM , H2 , H3 , HL ,   ID , JL , L , JV ,   V , JT , T , RI ,   SA , XX }
	Unicode line break class. More...

Functions
template<typename It , typename ItEnd , typename DescriptionFunc >
constexpr std::vector< unicode_line_break_info >	v1::detail::unicode_LB1 (It first, ItEnd last, DescriptionFunc const &description_func) noexcept
constexpr void	v1::detail::unicode_LB2_3 (unicode_break_vector &opportunities) noexcept
template<typename MatchFunc >
constexpr void	v1::detail::unicode_LB_walk (unicode_break_vector &opportunities, std::vector< unicode_line_break_info > const &infos, MatchFunc match_func) noexcept
constexpr void	v1::detail::unicode_LB4_8a (unicode_break_vector &opportunities, std::vector< unicode_line_break_info > const &infos) noexcept
constexpr void	v1::detail::unicode_LB9 (unicode_break_vector &opportunities, std::vector< unicode_line_break_info > &infos) noexcept
constexpr void	v1::detail::unicode_LB10 (std::vector< unicode_line_break_info > &infos) noexcept
constexpr void	v1::detail::unicode_LB11_31 (unicode_break_vector &opportunities, std::vector< unicode_line_break_info > const &infos) noexcept
constexpr float	v1::detail::unicode_LB_width (std::vector< float >::const_iterator first, std::vector< float >::const_iterator last) noexcept
	Calculate the width of a line.
constexpr float	v1::detail::unicode_LB_width (std::vector< float > const &widths, std::vector< size_t > const &lengths)
	Get the width of the entire text.
constexpr bool	v1::detail::unicode_LB_width_check (std::vector< float > const &widths, std::vector< size_t > const &lengths, float maximum_line_width) noexcept
	Check if all the lines in the text fit the maximum width.
constexpr std::vector< size_t >	v1::detail::unicode_LB_mandatory_lines (unicode_break_vector const &opportunities) noexcept
	Get the length of each line when broken with mandatory breaks.
constexpr std::vector< size_t >	v1::detail::unicode_LB_optional_lines (unicode_break_vector const &opportunities) noexcept
	Get the length of each line when broken with mandatory and optional breaks.
constexpr unicode_break_const_iterator	v1::detail::unicode_LB_fast_fit_line (unicode_break_const_iterator opportunity_it, std::vector< float >::const_iterator width_it, float maximum_line_width) noexcept
constexpr unicode_break_const_iterator	v1::detail::unicode_LB_slow_fit_line (unicode_break_const_iterator first, unicode_break_const_iterator end_of_line, std::vector< float >::const_iterator first_width, float maximum_line_width) noexcept
constexpr unicode_break_const_iterator	v1::detail::unicode_LB_finish_fit_line (unicode_break_const_iterator first, unicode_break_const_iterator end_of_line) noexcept
constexpr std::vector< size_t >	v1::detail::unicode_LB_fit_lines (unicode_break_vector const &opportunities, std::vector< float > const &widths, float maximum_line_width) noexcept
	Get the length of each line when broken after folding text to a maximum width.
constexpr std::pair< float, std::vector< size_t > >	v1::detail::unicode_LB_maximum_width (unicode_break_vector const &opportunities, std::vector< float > const &char_widths)
	Get the maximum width of the text.
constexpr std::pair< float, std::vector< size_t > >	v1::detail::unicode_LB_minimum_width (unicode_break_vector const &opportunities, std::vector< float > const &char_widths)
	Get the minimum width of the text.
constexpr std::pair< float, std::vector< size_t > >	v1::detail::unicode_LB_width (unicode_break_vector const &opportunities, std::vector< float > const &char_widths, float maximum_line_width)
	Get the width of the text at a maximum width.
template<typename It , typename ItEnd , typename DescriptionFunc >
unicode_break_vector	v1::unicode_line_break (It first, ItEnd last, DescriptionFunc const &description_func) noexcept
	The unicode line break algorithm UAX #14.
constexpr std::vector< size_t >	v1::unicode_line_break (unicode_break_vector const &opportunities, std::vector< float > const &widths, float maximum_line_width)
	Unicode break lines.

Function Documentation

unicode_LB_fit_lines()

constexpr std::vector< size_t > v1::detail::unicode_LB_fit_lines ( unicode_break_vector const & opportunities, std::vector< float > const & widths, float maximum_line_width )

constexprnoexcept

Get the length of each line when broken after folding text to a maximum width.

Returns

A list of line lengths.

unicode_LB_mandatory_lines()

constexpr std::vector< size_t > v1::detail::unicode_LB_mandatory_lines ( unicode_break_vector const & opportunities )

constexprnoexcept

Get the length of each line when broken with mandatory breaks.

Returns

A list of line lengths.

unicode_LB_maximum_width()

constexpr std::pair< float, std::vector< size_t > > v1::detail::unicode_LB_maximum_width ( unicode_break_vector const & opportunities, std::vector< float > const & char_widths )

constexpr

Get the maximum width of the text.

The width of the text when using only the mandatory break-opportunity.

Parameters

opportunities	The break-opportunity per character.
char_widths	The width of each character.

Returns

The maximum line width of the text, number of lines.

unicode_LB_minimum_width()

constexpr std::pair< float, std::vector< size_t > > v1::detail::unicode_LB_minimum_width ( unicode_break_vector const & opportunities, std::vector< float > const & char_widths )

constexpr

Get the minimum width of the text.

The width of the text when using each and every break-opportunity.

Parameters

opportunities	The break-opportunity per character.
char_widths	The width of each character.

Returns

The minimum line width of the text, number of lines.

unicode_LB_optional_lines()

constexpr std::vector< size_t > v1::detail::unicode_LB_optional_lines ( unicode_break_vector const & opportunities )

constexprnoexcept

Get the length of each line when broken with mandatory and optional breaks.

Returns

A list of line lengths.

unicode_LB_width() [1/3]

constexpr float v1::detail::unicode_LB_width ( std::vector< float > const & widths, std::vector< size_t > const & lengths )

constexpr

Get the width of the entire text.

Parameters

widths	Width of each character in the text.
lengths	Number of characters on each line.

Returns

The maximum line width.

unicode_LB_width() [2/3]

constexpr float v1::detail::unicode_LB_width ( std::vector< float >::const_iterator first, std::vector< float >::const_iterator last )

constexprnoexcept

Calculate the width of a line.

Parameters

first	Iterator to the first character widths.
last	Iterator to one beyond the last character width.

Returns

The length of the line.

unicode_LB_width() [3/3]

constexpr std::pair< float, std::vector< size_t > > v1::detail::unicode_LB_width ( unicode_break_vector const & opportunities, std::vector< float > const & char_widths, float maximum_line_width )

constexpr

Get the width of the text at a maximum width.

The width of the text when folding the text to a maximum width.

Parameters

opportunities	The break-opportunity per character.
char_widths	The width of each character.
maximum_line_width	The maximum width of the text

Returns

The minimum line width of the folded text, number of lines.

unicode_LB_width_check()

constexpr bool v1::detail::unicode_LB_width_check ( std::vector< float > const & widths, std::vector< size_t > const & lengths, float maximum_line_width )

constexprnoexcept

Check if all the lines in the text fit the maximum width.

Parameters

widths	Width of each character in the text.
lengths	Number of characters on each line.
maximum_line_width	The maximum line width allowed.

Returns

True if all the lines fit the maximum width.