Add attributes to a Pango.Item.
The idea is that you have attributes that don't affect itemization, such as font features, so you filter them out using Pango.AttrList.filter, itemize your text, then reapply the attributes to the resulting items using this function.
The iter should be positioned before the range of the item,
and will be advanced past it. This function is meant to be called
in a loop over the items resulting from itemization, while passing
the iter to each call.
Free a Pango.Item and all associated memory.
Returns the character offset of the item from the beginning of the itemized text.
If the item has not been obtained from Pango's itemization machinery, then the character offset is not available. In that case, this function returns -1.
the character offset of the item from the beginning of the itemized text, or -1
Modifies orig to cover only the text after split_index, and
returns a new item that covers the text before split_index that
used to be in orig.
You can think of split_index as the length of the returned item.
split_index may not be 0, and it may not be greater than or equal
to the length of orig (that is, there must be at least one byte
assigned to each item, you can't create a zero-length item).
split_offset is the length of the first item in chars, and must be
provided because the text used to generate the item isn't available,
so pango_item_split() can't count the char length of the split items
itself.
byte index of position to split item, relative to the start of the item
number of chars between start of orig and split_index
new item representing text before split_index, which should be freed with Pango.Item.free.
Staticnew
The Pango.Item structure stores information about a segment of text.
You typically obtain
PangoItemsby itemizing a piece of text with itemize.