deliantra/Deliantra-Client/pangoopengl.h

/* Pango
 * pangoopengl.h: OpenGL/Freetype2 backend
 *
 * Copyright (C) 1999 Red Hat Software
 * Copyright (C) 2000 Tor Lillqvist
 * Copyright (C) 2006 Marc Lehmann <pcg@goof.com>
 *
 * This file 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 file 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 PANGOOPENGL_H__
#define PANGOOPENGL_H__

#include <glib-object.h>

#include <fontconfig/fontconfig.h>

#include <pango/pango-layout.h>
#include <pango/pangofc-font.h>

G_BEGIN_DECLS

#define PANGO_TYPE_OPENGL_FONT_MAP              (pango_opengl_font_map_get_type ())
#define PANGO_OPENGL_FONT_MAP(object)           (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_OPENGL_FONT_MAP, PangoOpenGLFontMap))
#define PANGO_OPENGL_IS_FONT_MAP(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_OPENGL_FONT_MAP))

typedef struct _PangoOpenGLFontMap PangoOpenGLFontMap;
typedef struct _PangoOpenGLFont PangoOpenGLFont;
typedef struct _PangoOpenGLGlyphInfo PangoOpenGLGlyphInfo;
typedef struct _PangoOpenGLRenderer PangoOpenGLRenderer;
typedef struct _PangoOpenGLFontMapClass PangoOpenGLFontMapClass;

typedef void (*PangoOpenGLSubstituteFunc) (FcPattern *pattern, gpointer data);

/* Calls for applications */

void
pango_opengl_render_layout_subpixel (PangoLayout *layout,
                                     int x, int y,
                                     float r, float g, float b, float a);

void
pango_opengl_render_layout (PangoLayout *layout,
                            int x, int y,
                            float r, float g, float b, float a);

GType pango_opengl_font_map_get_type (void);

PangoFontMap *pango_opengl_font_map_new                    (void);
void          pango_opengl_font_map_set_default_substitute (PangoOpenGLFontMap        *fontmap,
                                                            PangoOpenGLSubstituteFunc  func,
                                                            gpointer                   data,
                                                            GDestroyNotify             notify);
void          pango_opengl_font_map_substitute_changed (PangoOpenGLFontMap *fontmap);
PangoContext *pango_opengl_font_map_create_context     (PangoOpenGLFontMap *fontmap);

struct _PangoOpenGLFont
{
  PangoFcFont font;

  FT_Face face;
  int load_flags;

  int size;

  GSList *metrics_by_lang;

  GHashTable *glyph_info;
  GDestroyNotify glyph_cache_destroy;
};

struct _PangoOpenGLGlyphInfo
{
  PangoRectangle logical_rect;
  PangoRectangle ink_rect;
  void *cached_glyph;
};

#define PANGO_TYPE_OPENGL_FONT              (pango_opengl_font_get_type ())
#define PANGO_OPENGL_FONT(object)           (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_OPENGL_FONT, PangoOpenGLFont))
#define PANGO_OPENGL_IS_FONT(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_OPENGL_FONT))

#define PANGO_SCALE_26_6 (PANGO_SCALE / (1<<6))
#define PANGO_PIXELS_26_6(d)                            \
  (((d) >= 0) ?                                         \
   ((d) + PANGO_SCALE_26_6 / 2) / PANGO_SCALE_26_6 :    \
   ((d) - PANGO_SCALE_26_6 / 2) / PANGO_SCALE_26_6)
#define PANGO_UNITS_26_6(d) (PANGO_SCALE_26_6 * (d))

GType pango_opengl_font_get_type (void);

PangoOpenGLFont *_pango_opengl_font_new (PangoOpenGLFontMap *fontmap, FcPattern *pattern);
FT_Library _pango_opengl_font_map_get_library (PangoFontMap *fontmap);

void *_pango_opengl_font_get_cache_glyph_data (PangoFont *font, int glyph_index);
void _pango_opengl_font_set_cache_glyph_data (PangoFont *font, int glyph_index, void *cached_glyph);
void _pango_opengl_font_set_glyph_cache_destroy (PangoFont *font, GDestroyNotify destroy_notify);

#define PANGO_TYPE_OPENGL_RENDERER            (pango_opengl_renderer_get_type())
#define PANGO_OPENGL_RENDERER(object)         (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_OPENGL_RENDERER, PangoOpenGLRenderer))
#define PANGO_IS_OPENGL_RENDERER(object)      (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_OPENGL_RENDERER))

GType pango_opengl_renderer_get_type (void);

PangoRenderer *_pango_opengl_font_map_get_renderer (PangoOpenGLFontMap *fontmap);

// ERROR/TODO: this is not public. this means we have to reimplement
// not just all of pangoft2, but all of pangofc. Whats the point
// of adding 3 layers of abstractions if you can't extend it in any way?
void pango_fc_font_get_raw_extents (PangoFcFont *font, FT_Int32 load_flags, PangoGlyph glyph, PangoRectangle *ink_rect, PangoRectangle *logical_rect);

G_END_DECLS

#endif
Revision:	1.2
Committed:	Tue Jul 4 23:44:23 2006 UTC (17 years, 10 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-0_2
Changes since 1.1:	+5 -0 lines
Log Message:	small fixed, ported to the language called microsoft c, which superficially looks like ISO-C and is similar enough so you can write programs in their common subset.
#	Content
1	/* Pango
2	* pangoopengl.h: OpenGL/Freetype2 backend
3	*
4	* Copyright (C) 1999 Red Hat Software
5	* Copyright (C) 2000 Tor Lillqvist
6	* Copyright (C) 2006 Marc Lehmann <pcg@goof.com>
7	*
8	* This file is free software; you can redistribute it and/or
9	* modify it under the terms of the GNU Library General Public
10	* License as published by the Free Software Foundation; either
11	* version 2 of the License, or (at your option) any later version.
12	*
13	* This file is distributed in the hope that it will be useful,
14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16	* Library General Public License for more details.
17	*
18	* You should have received a copy of the GNU Library General Public
19	* License along with this library; if not, write to the
20	* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21	* Boston, MA 02111-1307, USA.
22	*/
23
24	#ifndef PANGOOPENGL_H__
25	#define PANGOOPENGL_H__
26
27	#include <glib-object.h>
28
29	#include <fontconfig/fontconfig.h>
30
31	#include <pango/pango-layout.h>
32	#include <pango/pangofc-font.h>
33
34	G_BEGIN_DECLS
35
36	#define PANGO_TYPE_OPENGL_FONT_MAP (pango_opengl_font_map_get_type ())
37	#define PANGO_OPENGL_FONT_MAP(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_OPENGL_FONT_MAP, PangoOpenGLFontMap))
38	#define PANGO_OPENGL_IS_FONT_MAP(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_OPENGL_FONT_MAP))
39
40	typedef struct _PangoOpenGLFontMap PangoOpenGLFontMap;
41	typedef struct _PangoOpenGLFont PangoOpenGLFont;
42	typedef struct _PangoOpenGLGlyphInfo PangoOpenGLGlyphInfo;
43	typedef struct _PangoOpenGLRenderer PangoOpenGLRenderer;
44	typedef struct _PangoOpenGLFontMapClass PangoOpenGLFontMapClass;
45
46	typedef void (PangoOpenGLSubstituteFunc) (FcPattern pattern, gpointer data);
47
48	/* Calls for applications */
49
50	void
51	pango_opengl_render_layout_subpixel (PangoLayout *layout,
52	int x, int y,
53	float r, float g, float b, float a);
54
55	void
56	pango_opengl_render_layout (PangoLayout *layout,
57	int x, int y,
58	float r, float g, float b, float a);
59
60	GType pango_opengl_font_map_get_type (void);
61
62	PangoFontMap *pango_opengl_font_map_new (void);
63	void pango_opengl_font_map_set_default_substitute (PangoOpenGLFontMap *fontmap,
64	PangoOpenGLSubstituteFunc func,
65	gpointer data,
66	GDestroyNotify notify);
67	void pango_opengl_font_map_substitute_changed (PangoOpenGLFontMap *fontmap);
68	PangoContext pango_opengl_font_map_create_context (PangoOpenGLFontMap fontmap);
69
70	struct _PangoOpenGLFont
71	{
72	PangoFcFont font;
73
74	FT_Face face;
75	int load_flags;
76
77	int size;
78
79	GSList *metrics_by_lang;
80
81	GHashTable *glyph_info;
82	GDestroyNotify glyph_cache_destroy;
83	};
84
85	struct _PangoOpenGLGlyphInfo
86	{
87	PangoRectangle logical_rect;
88	PangoRectangle ink_rect;
89	void *cached_glyph;
90	};
91
92	#define PANGO_TYPE_OPENGL_FONT (pango_opengl_font_get_type ())
93	#define PANGO_OPENGL_FONT(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_OPENGL_FONT, PangoOpenGLFont))
94	#define PANGO_OPENGL_IS_FONT(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_OPENGL_FONT))
95
96	#define PANGO_SCALE_26_6 (PANGO_SCALE / (1<<6))
97	#define PANGO_PIXELS_26_6(d) \
98	(((d) >= 0) ? \
99	((d) + PANGO_SCALE_26_6 / 2) / PANGO_SCALE_26_6 : \
100	((d) - PANGO_SCALE_26_6 / 2) / PANGO_SCALE_26_6)
101	#define PANGO_UNITS_26_6(d) (PANGO_SCALE_26_6 * (d))
102
103	GType pango_opengl_font_get_type (void);
104
105	PangoOpenGLFont _pango_opengl_font_new (PangoOpenGLFontMap fontmap, FcPattern *pattern);
106	FT_Library _pango_opengl_font_map_get_library (PangoFontMap *fontmap);
107
108	void _pango_opengl_font_get_cache_glyph_data (PangoFont font, int glyph_index);
109	void _pango_opengl_font_set_cache_glyph_data (PangoFont font, int glyph_index, void cached_glyph);
110	void _pango_opengl_font_set_glyph_cache_destroy (PangoFont *font, GDestroyNotify destroy_notify);
111
112	#define PANGO_TYPE_OPENGL_RENDERER (pango_opengl_renderer_get_type())
113	#define PANGO_OPENGL_RENDERER(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_OPENGL_RENDERER, PangoOpenGLRenderer))
114	#define PANGO_IS_OPENGL_RENDERER(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_OPENGL_RENDERER))
115
116	GType pango_opengl_renderer_get_type (void);
117
118	PangoRenderer _pango_opengl_font_map_get_renderer (PangoOpenGLFontMap fontmap);
119
120	// ERROR/TODO: this is not public. this means we have to reimplement
121	// not just all of pangoft2, but all of pangofc. Whats the point
122	// of adding 3 layers of abstractions if you can't extend it in any way?
123	void pango_fc_font_get_raw_extents (PangoFcFont font, FT_Int32 load_flags, PangoGlyph glyph, PangoRectangle ink_rect, PangoRectangle *logical_rect);
124
125	G_END_DECLS
126
127	#endif