PangoFcDecoder
PangoFcDecoder — Custom font encoding handling
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Object Hierarchy
GObject
╰── PangoFcDecoder
Description
PangoFcDecoder represents a decoder that an application provides
for handling a font that is encoded in a custom way.
Functions
pango_fc_decoder_get_charset ()
FcCharSet *
pango_fc_decoder_get_charset (PangoFcDecoder *decoder,
PangoFcFont *fcfont);
Generates an FcCharSet of supported characters for the fcfont
given. The returned FcCharSet will be a reference to an
internal value stored by the PangoFcDecoder and must not
be modified or freed.
Returns
the FcCharset for fcfont
; must not
be modified or freed.
[transfer none]
Since: 1.6
pango_fc_decoder_get_glyph ()
PangoGlyph
pango_fc_decoder_get_glyph (PangoFcDecoder *decoder,
PangoFcFont *fcfont,
guint32 wc);
Generates a PangoGlyph for the given Unicode point using the
custom decoder. For complex scripts where there can be multiple
glyphs for a single character, the decoder will return whatever
glyph is most convenient for it. (Usually whatever glyph is directly
in the fonts character map table.)
Returns
the glyph index, or 0 if the glyph isn't
covered by the font.
Since: 1.6
Types and Values
struct PangoFcDecoder
struct PangoFcDecoder;
PangoFcDecoder is a virtual base class that implementations will
inherit from. It's the interface that is used to define a custom
encoding for a font. These objects are created in your code from a
function callback that was originally registered with
pango_fc_font_map_add_decoder_find_func(). Pango requires
information about the supported charset for a font as well as the
individual character to glyph conversions. Pango gets that
information via the get_charset and get_glyph callbacks into your
object implementation.
Since: 1.6
struct PangoFcDecoderClass
struct PangoFcDecoderClass {
FcCharSet *(*get_charset) (PangoFcDecoder *decoder,
PangoFcFont *fcfont);
PangoGlyph (*get_glyph) (PangoFcDecoder *decoder,
PangoFcFont *fcfont,
guint32 wc);
};
Class structure for PangoFcDecoder.
Since: 1.6