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/* Pango
* pangofc-font.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_H__
#define __PANGO_FC_FONT_H__
#include <ft2build.h>
#include FT_FREETYPE_H
#include <fontconfig/fontconfig.h>
#include <pango/pango-font.h>
#include <pango/pango-fontmap.h>
#include <pango/pango-glyph.h>
G_BEGIN_DECLS
#define PANGO_TYPE_FC_FONT (pango_fc_font_get_type ())
#define PANGO_FC_FONT(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_FC_FONT, PangoFcFont))
#define PANGO_IS_FC_FONT(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_FC_FONT))
typedef struct _PangoFcFont PangoFcFont;
typedef struct _PangoFcFontClass PangoFcFontClass;
#if defined(PANGO_ENABLE_ENGINE) || defined(PANGO_ENABLE_BACKEND)
/**
* PANGO_RENDER_TYPE_FC:
*
* A string constant used to identify shape engines that work
* with the fontconfig based backends. See the @engine_type field
* of #PangoEngineInfo.
**/
#define PANGO_RENDER_TYPE_FC "PangoRenderFc"
#ifdef PANGO_ENABLE_BACKEND
#define PANGO_FC_FONT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PANGO_TYPE_FC_FONT, PangoFcFontClass))
#define PANGO_IS_FC_FONT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PANGO_TYPE_FC_FONT))
#define PANGO_FC_FONT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PANGO_TYPE_FC_FONT, PangoFcFontClass))
/**
* PangoFcFont:
*
* #PangoFcFontMap is a base class for font implementations
* using the FontConfig and FreeType libraries and is used in
* conjunction with #PangoFcFontMap. When deriving from this
* class, you need to implement all of its virtual functions
* other than shutdown() along with the get_glyph_extents()
* virtual function from #PangoFont.
**/
struct _PangoFcFont
{
PangoFont parent_instance;
FcPattern *font_pattern; /* fully resolved pattern */
PangoFontMap *fontmap; /* associated map */
PangoFontDescription *description;
GSList *metrics_by_lang;
guint is_hinted : 1;
guint is_transformed : 1;
};
/**
* PangoFcFontClass:
* @lock_face: Returns the FT_Face of the font and increases
* the reference count for the face by one.
* @unlock_face: Decreases the reference count for the
* FT_Face of the font by one. When the count is zero,
* the #PangoFcFont subclass is allowed to free the
* FT_Face.
* @has_char: Return %TRUE if the the font contains a glyph
* corresponding to the specified character.
* @get_glyph: Gets the glyph that corresponds to the given
* Unicode character.
* @get_unknown_glyph: Gets the glyph that should be used to
* display an unknown-glyph indication for the specified
* unicode character.
* @shutdown: Performs any font-specific shutdown code that
* needs to be done when pango_fc_font_map_shutdown is called.
* May be %NULL.
*
* Class structure for #PangoFcFont.
**/
struct _PangoFcFontClass
{
/*< private >*/
PangoFontClass parent_class;
/*< public >*/
FT_Face (*lock_face) (PangoFcFont *font);
void (*unlock_face) (PangoFcFont *font);
gboolean (*has_char) (PangoFcFont *font,
gunichar wc);
guint (*get_glyph) (PangoFcFont *font,
gunichar wc);
PangoGlyph (*get_unknown_glyph) (PangoFcFont *font,
gunichar wc);
void (*shutdown) (PangoFcFont *font);
/*< private >*/
/* Padding for future expansion */
void (*_pango_reserved1) (void);
void (*_pango_reserved2) (void);
void (*_pango_reserved3) (void);
void (*_pango_reserved4) (void);
};
#endif /* PANGO_ENABLE_BACKEND */
gboolean pango_fc_font_has_char (PangoFcFont *font,
gunichar wc);
guint pango_fc_font_get_glyph (PangoFcFont *font,
gunichar wc);
PangoGlyph pango_fc_font_get_unknown_glyph (PangoFcFont *font,
gunichar wc);
void pango_fc_font_kern_glyphs (PangoFcFont *font,
PangoGlyphString *glyphs);
#endif /* PANGO_ENABLE_ENGINE || PANGO_ENABLE_BACKEND */
GType pango_fc_font_get_type (void);
FT_Face pango_fc_font_lock_face (PangoFcFont *font);
void pango_fc_font_unlock_face (PangoFcFont *font);
G_END_DECLS
#endif /* __PANGO_FC_FONT_H__ */
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