valid UTF-8 text to shape
the length (in bytes) of item_text. -1 means nul-terminated text.
text of the paragraph (see details).
the length (in bytes) of paragraph_text. -1 means nul-terminated text.
Pango.Analysis structure from Pango.itemize
flags influencing the shaping process
Convert the characters in
textinto glyphs.Given a segment of text and the corresponding Pango.Analysis structure returned from Pango.itemize, convert the characters into glyphs. You may also pass in only a substring of the item from Pango.itemize.
This is similar to Pango.shape_full, except it also takes flags that can influence the shaping process.
Some aspects of hyphen insertion and text transformation (in particular, capitalization) require log attrs, and thus can only be handled by Pango.shape_item.
Note that the extra attributes in the
analyisthat is returned from Pango.itemize have indices that are relative to the entire paragraph, so you do not pass the full paragraph text asparagraph_text, you need to subtract the item offset from their indices before calling Pango.shape_with_flags.