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/* Pango
* pangofc-fontmap.h: Base fontmap type for fontconfig-based backends
*
* Copyright (C) 2003 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_FC_FONT_MAP_H__
#define __PANGO_FC_FONT_MAP_H__
#include <fontconfig/fontconfig.h>
#include <pango/pango-fontmap.h>
#include <pango/pangofc-decoder.h>
#include <pango/pangofc-font.h>
G_BEGIN_DECLS
#define PANGO_TYPE_FC_FONT_MAP (pango_fc_font_map_get_type ())
#define PANGO_FC_FONT_MAP(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_FC_FONT_MAP, PangoFcFontMap))
#define PANGO_IS_FC_FONT_MAP(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_FC_FONT_MAP))
typedef struct _PangoFcFontMap PangoFcFontMap;
typedef struct _PangoFcFontMapClass PangoFcFontMapClass;
typedef struct _PangoFcFontMapPrivate PangoFcFontMapPrivate;
#ifdef PANGO_ENABLE_BACKEND
#define PANGO_FC_FONT_MAP_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PANGO_TYPE_FC_FONT_MAP, PangoFcFontMapClass))
#define PANGO_IS_FC_FONT_MAP_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PANGO_TYPE_FC_FONT_MAP))
#define PANGO_FC_FONT_MAP_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PANGO_TYPE_FC_FONT_MAP, PangoFcFontMapClass))
/**
* PangoFcFontMap:
*
* #PangoFcFontMap is a base class for font map implementations
* using the FontConfig and FreeType libraries. To create a new
* backend using Fontconfig and FreeType, you derive from this class
* and implement a new_font() virtual function that creates an
* instance deriving from #PangoFcFont.
**/
struct _PangoFcFontMap
{
PangoFontMap parent_instance;
PangoFcFontMapPrivate *priv;
};
/**
* PangoFcFontMapClass:
* @default_substitute: Substitutes in default values for
* unspecified fields in a #FcPattern. This will be called
* prior to creating a font for the pattern. May be %NULL.
* @new_font: Creates a new #PangoFcFont for the specified
* pattern of the appropriate type for this font map. The
* @pattern argument must be passed to the "pattern" property
* of #PangoFcFont when you call g_object_new(). Deprecated
* in favor of @create_font().
* @get_render_key: Given a context and font description,
* calculate a "key" of X and Y sizes and a flags word
* that can be used to hash the results of loading a font
* with that information. If %NULL, a default implementation
* is used.
* @create_font: Creates a new #PangoFcFont for the specified
* pattern of the appropriate type for this font map using
* information from the context that is passed in. The
* @pattern argument must be passed to the "pattern" property
* of #PangoFcFont when you call g_object_new(). Deprecated
* in favor of @create_font(). If %NULL, new_font() is used.
*
* Class structure for #PangoFcFontMap.
**/
struct _PangoFcFontMapClass
{
/*< private >*/
PangoFontMapClass parent_class;
/*< public >*/
void (*default_substitute) (PangoFcFontMap *fontmap,
FcPattern *pattern);
/* Deprecated in favor of create_font */
PangoFcFont *(*new_font) (PangoFcFontMap *fontmap,
FcPattern *pattern);
gboolean (*get_render_key) (PangoFcFontMap *fcfontmap,
PangoContext *context,
const PangoFontDescription *desc,
int *xsize,
int *ysize,
guint *flags);
PangoFcFont *(*create_font) (PangoFcFontMap *fontmap,
PangoContext *context,
FcPattern *pattern);
/*< private >*/
/* Padding for future expansion */
void (*_pango_reserved1) (void);
void (*_pango_reserved2) (void);
};
PangoContext * pango_fc_font_map_create_context (PangoFcFontMap *fcfontmap);
void pango_fc_font_map_cache_clear (PangoFcFontMap *fcfontmap);
void pango_fc_font_map_shutdown (PangoFcFontMap *fcfontmap);
#endif
GType pango_fc_font_map_get_type (void);
/**
* PangoFcDecoderFindFunc:
* @pattern: a fully resolved #FcPattern specifying the font on the system
* @user_data: user data passed to pango_fc_font_map_add_decoder_find_func()
*
* Callback function passed to pango_fc_font_map_add_decoder_find_func().
*
* Return value: a new reference to a custom decoder for this pattern,
* or %NULL if the default decoder handling should be used.
**/
typedef PangoFcDecoder * (*PangoFcDecoderFindFunc) (FcPattern *pattern,
gpointer user_data);
void pango_fc_font_map_add_decoder_find_func (PangoFcFontMap *fcfontmap,
PangoFcDecoderFindFunc findfunc,
gpointer user_data,
GDestroyNotify dnotify);
PangoFontDescription *pango_fc_font_description_from_pattern (FcPattern *pattern,
gboolean include_size);
G_END_DECLS
#endif /* __PANGO_FC_FONT_MAP_H__ */
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