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public SList<GlyphItem> apply_attrs (string text, AttrList list)
Splits a shaped item (PangoGlyphItem) into multiple items based on an attribute list. The idea is that
if you have attributes that don't affect shaping, such as color or underline, to avoid affecting shaping, you filter them out
(pango_attr_list_filter()), apply the shaping process and then reapply them to the result using this function.
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public GlyphItem copy ()
Make a deep copy of an existing GlyphItem structure.
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public void get_logical_widths (string text, int[] logical_widths)
Given a GlyphItem and the corresponding text, determine
the screen width corresponding to each character. When multiple characters compose a single cluster, the width of the entire cluster
is divided equally among the characters.
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public void letter_space (string text, LogAttr[] log_attrs, int letter_spacing)
Adds spacing between the graphemes of glyph_item to give the effect of typographic letter
spacing.
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public GlyphItem split (string text, int split_index)
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).
