donner::svg::BidiParagraph Class Reference

Owns stable Unicode scalar storage and resolved paragraphs. No library handle escapes. More...

#include "donner/svg/text/BidiParagraph.h"

Classes
struct	Run
	One level run of a line, returned in left-to-right visual order. More...

Public Member Functions
	BidiParagraph (BidiParagraph &&) noexcept
BidiParagraph &	operator= (BidiParagraph &&) noexcept
	BidiParagraph (const BidiParagraph &)=delete
BidiParagraph &	operator= (const BidiParagraph &)=delete
std::optional< std::vector< Run > >	visualRuns (uint32_t start, uint32_t end, BidiResourceBudget &budget) const
	Resolve L1/L2 for a logical line; source paragraphs never reorder across each other.
uint8_t	levelAt (uint32_t index) const
	Resolved level before line-specific trailing-space resets.
uint8_t	paragraphLevelAt (uint32_t index) const
	Resolved base level of the source paragraph containing the scalar.

Static Public Member Functions
static std::optional< BidiParagraph >	Analyze (std::vector< char32_t > codepoints, BidiResourceBudget &budget, uint8_t base=0, bool forceAnalysis=false)
	Analyze Donner-decoded scalars. Base 0/1 is explicit; 2 requests first-strong detection.
static bool	NeedsAnalysis (char32_t codepoint)
	Whether a scalar can require right-to-left analysis at explicit base zero.
static bool	IsControl (char32_t codepoint)
	Whether a source character affects bidi but consumes no SVG or DOM character index.
static bool	IsNonspacing (char32_t codepoint)
	Whether the scalar is a nonspacing mark that stays attached to its preceding base.
static char32_t	Mirror (char32_t codepoint)
	Unicode L4 mirror; characters without a paired mirror remain unchanged.

Detailed Description

Owns stable Unicode scalar storage and resolved paragraphs. No library handle escapes.

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Class Documentation

donner::svg::BidiParagraph::Run

struct donner::svg::BidiParagraph::Run

One level run of a line, returned in left-to-right visual order.

Class Members
uint32_t	end = 0
uint8_t	level = 0
uint32_t	start = 0

Member Function Documentation

Analyze()

std::optional< BidiParagraph > donner::svg::BidiParagraph::Analyze ( std::vector< char32_t > codepoints, BidiResourceBudget & budget, uint8_t base = 0, bool forceAnalysis = false )

static

Analyze Donner-decoded scalars. Base 0/1 is explicit; 2 requests first-strong detection.

Parameters

codepoints	Owned scalars, which remain pinned throughout analysis and line queries.
budget	Cumulative admission shared by the caller's layout.
base	Paragraph base direction; normal SVG uses 0.
forceAnalysis	Whether to bypass the equivalent all-left-to-right fast path.

visualRuns()

std::optional< std::vector< Run > > donner::svg::BidiParagraph::visualRuns	(	uint32_t	start,
		uint32_t	end,
		BidiResourceBudget &	budget ) const

Resolve L1/L2 for a logical line; source paragraphs never reorder across each other.

Parameters

start	First scalar of the line.
end	Exclusive scalar end.
budget	Shared visual-run admission.

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

• donner/svg/text/BidiParagraph.h