diff options
Diffstat (limited to 'trunk/pango/pangofc-font.h')
| -rw-r--r-- | trunk/pango/pangofc-font.h | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/trunk/pango/pangofc-font.h b/trunk/pango/pangofc-font.h new file mode 100644 index 00000000..ae16b168 --- /dev/null +++ b/trunk/pango/pangofc-font.h @@ -0,0 +1,151 @@ +/* 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: + * + * #PangoFcFont 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 */ + gpointer priv; /* used internally */ + PangoMatrix matrix; /* used internally */ + 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. + * May be %NULL. + * @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); +#ifndef PANGO_DISABLE_DEPRECATED +PangoGlyph pango_fc_font_get_unknown_glyph (PangoFcFont *font, + gunichar wc); +#endif /* PANGO_DISABLE_DEPRECATED */ +void pango_fc_font_kern_glyphs (PangoFcFont *font, + PangoGlyphString *glyphs); + +#endif /* PANGO_ENABLE_ENGINE || PANGO_ENABLE_BACKEND */ + +GType pango_fc_font_get_type (void) G_GNUC_CONST; + +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__ */ |