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/* Pango
* pangofc-decoder.h: Custom encoders/decoders on a per-font basis.
*
* Copyright (C) 2004 Red Hat Software
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __PANGO_DECODER_H_
#define __PANGO_DECODER_H_
#include <pango/pangofc-font.h>
G_BEGIN_DECLS
#define PANGO_TYPE_FC_DECODER (pango_fc_decoder_get_type())
#define PANGO_FC_DECODER(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_FC_DECODER, PangoFcDecoder))
#define PANGO_IS_FC_DECODER(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_FC_DECODER))
typedef struct _PangoFcDecoder PangoFcDecoder;
typedef struct _PangoFcDecoderClass PangoFcDecoderClass;
#define PANGO_FC_DECODER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PANGO_TYPE_FC_DECODER, PangoFcDecoderClass))
#define PANGO_IS_FC_DECODER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PANGO_TYPE_FC_DECODER))
#define PANGO_FC_DECODER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PANGO_TYPE_FC_DECODER, PangoFcDecoderClass))
/**
* 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 _PangoFcDecoder
{
/*< private >*/
GObject parent_instance;
};
/**
* PangoFcDecoderClass:
* @get_charset: 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: This returns a single #PangoGlyph for a given Unicode
* code point.
*
* Class structure for #PangoFcDecoder.
*
* Since: 1.6
**/
struct _PangoFcDecoderClass
{
/*< private >*/
GObjectClass parent_class;
/* vtable - not signals */
/*< public >*/
FcCharSet *(*get_charset) (PangoFcDecoder *decoder,
PangoFcFont *fcfont);
PangoGlyph (*get_glyph) (PangoFcDecoder *decoder,
PangoFcFont *fcfont,
guint32 wc);
/*< private >*/
/* Padding for future expansion */
void (*_pango_reserved1) (void);
void (*_pango_reserved2) (void);
void (*_pango_reserved3) (void);
void (*_pango_reserved4) (void);
};
PANGO_AVAILABLE_IN_1_6
GType pango_fc_decoder_get_type (void) G_GNUC_CONST;
PANGO_AVAILABLE_IN_1_6
FcCharSet *pango_fc_decoder_get_charset (PangoFcDecoder *decoder,
PangoFcFont *fcfont);
PANGO_AVAILABLE_IN_1_6
PangoGlyph pango_fc_decoder_get_glyph (PangoFcDecoder *decoder,
PangoFcFont *fcfont,
guint32 wc);
G_END_DECLS
#endif /* __PANGO_DECODER_H_ */