LogAttrProtocol

Untyped pointer to the underlying PangoLogAttr instance.

Typed pointer to the underlying PangoLogAttr instance.

Required Initialiser for types conforming to LogAttrProtocol

This is the default break algorithm.

It applies rules from the Unicode Line Breaking Algorithm without language-specific tailoring, therefore the analyis argument is unused and can be nil.

See [funcPango.tailor_break] for language-specific breaks.

See [funcPango.attr_break] for attribute-based customization.

This is the default break algorithm.

It applies rules from the Unicode Line Breaking Algorithm without language-specific tailoring, therefore the analyis argument is unused and can be nil.

See [funcPango.tailor_break] for language-specific breaks.

See [funcPango.attr_break] for attribute-based customization.

Convert the characters in item into glyphs.

This is similar to [funcPango.shape_with_flags], except it takes a PangoItem instead of separate item_text and analysis arguments. It also takes log_attrs, which may be used in implementing text transforms.

Note that the extra attributes in the analyis that is returned from [funcPango.itemize] have indices that are relative to the entire paragraph, so you do not pass the full paragraph text as paragraph_text, you need to subtract the item offset from their indices before calling [funcPango.shape_with_flags].

if set, can break line in front of character

if set, must break line in front of character

if set, can break here when doing character wrapping

is whitespace character

if set, cursor can appear in front of character. i.e. this is a grapheme boundary, or the first character in the text. This flag implements Unicode’s Grapheme Cluster Boundaries semantics.

is first character in a word

is first non-word char after a word Note that in degenerate cases, you could have both is_word_start and is_word_end set for some character.

is a sentence boundary. There are two ways to divide sentences. The first assigns all inter-sentence whitespace/control/format chars to some sentence, so all chars are in some sentence; is_sentence_boundary denotes the boundaries there. The second way doesn’t assign between-sentence spaces, etc. to any sentence, so is_sentence_start/is_sentence_end mark the boundaries of those sentences.

is first character in a sentence

is first char after a sentence. Note that in degenerate cases, you could have both is_sentence_start and is_sentence_end set for some character. (e.g. no space after a period, so the next sentence starts right away)

if set, backspace deletes one character rather than the entire grapheme cluster. This field is only meaningful on grapheme boundaries (where is_cursor_position is set). In some languages, the full grapheme (e.g. letter + diacritics) is considered a unit, while in others, each decomposed character in the grapheme is a unit. In the default implementation of [funcbreak], this bit is set on all grapheme boundaries except those following Latin, Cyrillic or Greek base characters.

is a whitespace character that can possibly be expanded for justification purposes. (Since: 1.18)

is a word boundary, as defined by UAX29. More specifically, means that this is not a position in the middle of a word. For example, both sides of a punctuation mark are considered word boundaries. This flag is particularly useful when selecting text word-by-word. This flag implements Unicode’s Word Boundaries semantics. (Since: 1.22)

when breaking lines before this char, insert a hyphen. Since: 1.50

when breaking lines before this char, remove the preceding char. Since 1.50

Undocumented