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Pango::Item is used as an output type only so there is no public default constructor. You retrieve objects of this type by calling Pango::Context::itemize() with some text. The actual rendering of the segment of text that corresponds to a particular Pango::Item (or some sub-string) into a string of glyphs is done with shape(). The segment of text that corresponds to a Pango::Item can be computed from the text passed into Pango::Context::itemize() with get_segment(). Together with the Pango::Analysis data member that can be accessed with get_analysis() it is needed for further calculations in Pango::GlyphString.
Public Member Functions | |
Item (PangoItem* castitem, bool make_a_copy=true) | |
Item (const Item& src) | |
Item& | operator= (const Item& src) |
~Item () | |
PangoItem* | gobj_copy () const |
Item | split (int split_index, int split_offset) |
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 . | |
int | get_offset () const |
Gets the offset of the segment from the beginning of the string in bytes. | |
int | get_length () const |
Gets the length of the segment in bytes. | |
int | get_num_chars () const |
Gets the length of the segment in characters. | |
Analysis | get_analysis () const |
Gets the properties of the segment. | |
Glib::ustring | get_segment (const Glib::ustring& text) const |
Computes the segment of text that is represented by the item. | |
GlyphString | shape (const Glib::ustring& text) const |
Convert a segment of text into a string of glyphs. | |
PangoItem* | gobj () |
const PangoItem* | gobj () const |
Protected Attributes | |
PangoItem* | gobject_ |
Related Functions | |
(Note that these are not member functions.) | |
Pango::Item | wrap (PangoItem* object, bool take_copy=true) |
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Gets the properties of the segment.
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Gets the length of the segment in bytes.
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Gets the length of the segment in characters.
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Gets the offset of the segment from the beginning of the string in bytes.
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Computes the segment of text that is represented by the item.
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Convert a segment of text into a string of glyphs.
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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.
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