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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_PRIVATE_H__
#define __PANGO_FC_FONT_MAP_PRIVATE_H__
#include <pango/pangofc-fontmap.h>
#include <pango/pangofc-decoder.h>
#include <pango/pangofc-font-private.h>
#include <pango/pango-fontmap.h>
#include <pango/pango-fontset.h>
#include <fontconfig/fontconfig.h>
G_BEGIN_DECLS
/**
* PangoFcFontsetKey:
*
* An opaque structure containing all the information needed for
* loading a fontset with the PangoFc fontmap.
*
* Since: 1.24
**/
typedef struct _PangoFcFontsetKey PangoFcFontsetKey;
PANGO_AVAILABLE_IN_1_24
PangoLanguage *pango_fc_fontset_key_get_language (const PangoFcFontsetKey *key);
PANGO_AVAILABLE_IN_1_24
const PangoFontDescription *pango_fc_fontset_key_get_description (const PangoFcFontsetKey *key);
PANGO_AVAILABLE_IN_1_24
const PangoMatrix *pango_fc_fontset_key_get_matrix (const PangoFcFontsetKey *key);
PANGO_AVAILABLE_IN_1_24
double pango_fc_fontset_key_get_absolute_size (const PangoFcFontsetKey *key);
PANGO_AVAILABLE_IN_1_24
double pango_fc_fontset_key_get_resolution (const PangoFcFontsetKey *key);
PANGO_AVAILABLE_IN_1_24
gpointer pango_fc_fontset_key_get_context_key (const PangoFcFontsetKey *key);
/**
* PangoFcFontKey:
*
* An opaque structure containing all the information needed for
* loading a font with the PangoFc fontmap.
*
* Since: 1.24
**/
typedef struct _PangoFcFontKey PangoFcFontKey;
PANGO_AVAILABLE_IN_1_24
const FcPattern *pango_fc_font_key_get_pattern (const PangoFcFontKey *key);
PANGO_AVAILABLE_IN_1_24
const PangoMatrix *pango_fc_font_key_get_matrix (const PangoFcFontKey *key);
PANGO_AVAILABLE_IN_1_24
gpointer pango_fc_font_key_get_context_key (const PangoFcFontKey *key);
PANGO_AVAILABLE_IN_1_40
const char *pango_fc_font_key_get_variations (const PangoFcFontKey *key);
#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;
/* Function to call on prepared patterns to do final
* config tweaking.
*/
PangoFcSubstituteFunc substitute_func;
gpointer substitute_data;
GDestroyNotify substitute_destroy;
};
/**
* PangoFcFontMapClass:
* @default_substitute: (nullable): Substitutes in default
* values for unspecified fields in a #FcPattern. This will
* be called prior to creating a font for the pattern.
* Implementations must call substitute_func if it is
* defined. May be %NULL. Deprecated in favor of
* @font_key_substitute().
* @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_resolution: Gets the resolution (the scale factor
* between logical and absolute font sizes) that the backend
* will use for a particular fontmap and context. @context
* may be null.
* @context_key_get: Gets an opaque key holding backend
* specific options for the context that will affect
* fonts created by @create_font(). The result must point to
* persistant storage owned by the fontmap. This key
* is used to index hash tables used to look up fontsets
* and fonts.
* @context_key_copy: Copies a context key. Pango uses this
* to make a persistant copy of the value returned from
* @context_key_get.
* @context_key_free: Frees a context key copied with
* @context_key_copy.
* @context_key_hash: Gets a hash value for a context key
* @context_key_equal: Compares two context keys for equality.
* @fontset_key_substitute: (nullable): Substitutes in
* default values for unspecified fields in a
* #FcPattern. This will be called prior to creating a font
* for the pattern. Implementations must call substitute_func
* if it is defined. May be %NULL. (Since: 1.24)
* @create_font: (nullable): Creates a new `PangoFcFont` for
* the specified pattern of the appropriate type for this
* font map using information from the font key that is
* passed in. The @pattern member of @font_key can be
* retrieved using pango_fc_font_key_get_pattern() and must
* be passed to the "pattern" property of `PangoFcFont` when
* you call g_object_new(). If %NULL, new_font() is used.
* (Since: 1.24)
*
* Class structure for `PangoFcFontMap`.
**/
struct _PangoFcFontMapClass
{
/*< private >*/
PangoFontMapClass parent_class;
/*< public >*/
/* Deprecated in favor of fontset_key_substitute */
void (*default_substitute) (PangoFcFontMap *fontmap,
FcPattern *pattern);
/* Deprecated in favor of create_font */
PangoFcFont *(*new_font) (PangoFcFontMap *fontmap,
FcPattern *pattern);
double (*get_resolution) (PangoFcFontMap *fcfontmap,
PangoContext *context);
gconstpointer (*context_key_get) (PangoFcFontMap *fcfontmap,
PangoContext *context);
gpointer (*context_key_copy) (PangoFcFontMap *fcfontmap,
gconstpointer key);
void (*context_key_free) (PangoFcFontMap *fcfontmap,
gpointer key);
guint32 (*context_key_hash) (PangoFcFontMap *fcfontmap,
gconstpointer key);
gboolean (*context_key_equal) (PangoFcFontMap *fcfontmap,
gconstpointer key_a,
gconstpointer key_b);
void (*fontset_key_substitute)(PangoFcFontMap *fontmap,
PangoFcFontsetKey *fontsetkey,
FcPattern *pattern);
PangoFcFont *(*create_font) (PangoFcFontMap *fontmap,
PangoFcFontKey *fontkey);
/*< private >*/
/* Padding for future expansion */
void (*_pango_reserved1) (void);
void (*_pango_reserved2) (void);
void (*_pango_reserved3) (void);
void (*_pango_reserved4) (void);
};
G_END_DECLS
#endif /* __PANGO_FC_FONT_MAP_PRIVATE_H__ */
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