Class

PangoFcDecoder

since: 1.6

Description [src]

abstract class PangoFc.Decoder : GObject.Object
{
  /* No available fields */
}

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.

Available since: 1.6

Ancestors

GObject

Instance methods

pango_fc_decoder_get_charset

Generates an FcCharSet of supported characters for the fcfont given.

since: 1.6

pango_fc_decoder_get_glyph

Generates a PangoGlyph for the given Unicode point using the custom decoder.

since: 1.6

Methods inherited from GObject (43)

Please see GObject for a full list of methods.

Signals

Signals inherited from GObject (1)

GObject::notify

The notify signal is emitted on an object when one of its properties has its value set through g_object_set_property(), g_object_set(), et al.

Class structure

struct PangoFcDecoderClass {
  FcCharSet* (* get_charset) (
    PangoFcDecoder* decoder,
    PangoFcFont* fcfont
  );
  PangoGlyph (* get_glyph) (
    PangoFcDecoder* decoder,
    PangoFcFont* fcfont,
    guint32 wc
  );
  void (* _pango_reserved1) (
void
  );
  void (* _pango_reserved2) (
void
  );
  void (* _pango_reserved3) (
void
  );
  void (* _pango_reserved4) (
void
  );
  
}

Class structure for PangoFcDecoder.

Class members

get_charset: FcCharSet* (* get_charset) ( PangoFcDecoder* decoder, PangoFcFont* fcfont ): This returns an FcCharset given a PangoFcFont that includes a list of supported characters in the font. The FcCharSet that is returned should be an internal reference to your code. Pango will not free this structure. It is important that you make this callback fast because this callback is called separately for each character to determine Unicode coverage.
get_glyph: PangoGlyph (* get_glyph) ( PangoFcDecoder* decoder, PangoFcFont* fcfont, guint32 wc ): This returns a single PangoGlyph for a given Unicode code point.
_pango_reserved1: void (* _pango_reserved1) ( void ): No description available.
_pango_reserved2: void (* _pango_reserved2) ( void ): No description available.
_pango_reserved3: void (* _pango_reserved3) ( void ): No description available.
_pango_reserved4: void (* _pango_reserved4) ( void ): No description available.

Virtual methods

PangoFc.DecoderClass.get_charset

Generates an FcCharSet of supported characters for the fcfont given.

since: 1.6

PangoFc.DecoderClass.get_glyph

Generates a PangoGlyph for the given Unicode point using the custom decoder.

since: 1.6