analysis results for the item.
length of this item in bytes.
number of Unicode characters in the item.
byte offset of the start of this item in text.
Add attributes to a PangoItem
.
The idea is that you have attributes that don't affect itemization,
such as font features, so you filter them out using
[methodPango
.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.
a PangoAttrIterator
Free a PangoItem
and all associated memory.
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
The
PangoItem
structure stores information about a segment of text.You typically obtain
PangoItems
by itemizing a piece of text with [funcitemize]
.