114 lines
3.8 KiB
C
114 lines
3.8 KiB
C
/* 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_ */
|
|
|