LogAttr

class LogAttr(*args, **kwargs)

The PangoLogAttr structure stores information about the attributes of a single character.

Fields

class LogAttr

backspace_deletes_character

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 break, this bit is set on all grapheme boundaries except those following Latin, Cyrillic or Greek base characters.

break_inserts_hyphen

When breaking lines before this char, insert a hyphen.

Since: 1.50

break_removes_preceding

When breaking lines before this char, remove the

preceding char. Since 1.50

is_char_break

If set, can break here when doing character wrapping

is_cursor_position

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_expandable_space

Is a whitespace character that can possibly be

expanded for justification purposes. (Since: 1.18)

is_line_break

If set, can break line in front of character

is_mandatory_break

If set, must break line in front of character

is_sentence_boundary

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_sentence_end

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)

is_sentence_start

Is first character in a sentence

is_white

Is whitespace character

is_word_boundary

Is a word boundary, as defined by UAX``29``.

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)

is_word_end

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_word_start

Is first character in a word

reserved