deliantra/Deliantra-Client/pango-fontmap.c

/* Pango
 * OpenGL fonts handling
 *
 * Copyright (C) 2000 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.
 */

#include <glib.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>

#include <fontconfig/fontconfig.h>

#include "pangoopengl.h"

struct _PangoOpenGLFontMap
{
  PangoFcFontMap parent_instance;

  FT_Library library;

  /* Function to call on prepared patterns to do final
   * config tweaking.
   */
  PangoOpenGLSubstituteFunc substitute_func;
  gpointer substitute_data;
  GDestroyNotify substitute_destroy;

  PangoRenderer *renderer;
};

struct _PangoOpenGLFontMapClass
{
  PangoFcFontMapClass parent_class;
};

G_DEFINE_TYPE (PangoOpenGLFontMap, pango_opengl_font_map, PANGO_TYPE_FC_FONT_MAP)

static void
pango_opengl_font_map_finalize (GObject *object)
{
  PangoOpenGLFontMap *fontmap = PANGO_OPENGL_FONT_MAP (object);
  
  if (fontmap->renderer)
    g_object_unref (fontmap->renderer);

  if (fontmap->substitute_destroy)
    fontmap->substitute_destroy (fontmap->substitute_data);

  FT_Done_FreeType (fontmap->library);

  G_OBJECT_CLASS (pango_opengl_font_map_parent_class)->finalize (object);
}

PangoFontMap *
pango_opengl_font_map_new (void)
{
  PangoOpenGLFontMap *fontmap;
  FT_Error error;
  
  /* Make sure that the type system is initialized */
  g_type_init ();
  
  fontmap = g_object_new (PANGO_TYPE_OPENGL_FONT_MAP, NULL);
  
  error = FT_Init_FreeType (&fontmap->library);
  if (error != FT_Err_Ok)
    g_critical ("pango_opengl_font_map_new: Could not initialize freetype");

  return (PangoFontMap *)fontmap;
}

void
pango_opengl_font_map_set_default_substitute (PangoOpenGLFontMap        *fontmap,
                                              PangoOpenGLSubstituteFunc  func,
                                              gpointer                   data,
                                              GDestroyNotify             notify)
{
  if (fontmap->substitute_destroy)
    fontmap->substitute_destroy (fontmap->substitute_data);

  fontmap->substitute_func = func;
  fontmap->substitute_data = data;
  fontmap->substitute_destroy = notify;
  
  pango_fc_font_map_cache_clear (PANGO_FC_FONT_MAP (fontmap));
}

/**
 * pango_opengl_font_map_substitute_changed:
 * @fontmap: a #PangoOpenGLFontmap
 * 
 * Call this function any time the results of the
 * default substitution function set with
 * pango_opengl_font_map_set_default_substitute() change.
 * That is, if your subsitution function will return different
 * results for the same input pattern, you must call this function.
 *
 * Since: 1.2
 **/
void
pango_opengl_font_map_substitute_changed (PangoOpenGLFontMap *fontmap)
{
  pango_fc_font_map_cache_clear (PANGO_FC_FONT_MAP (fontmap));
}

/**
 * pango_opengl_font_map_create_context:
 * @fontmap: a #PangoOpenGLFontmap
 * 
 * Create a #PangoContext for the given fontmap.
 * 
 * Return value: the newly created context; free with g_object_unref().
 *
 * Since: 1.2
 **/
PangoContext *
pango_opengl_font_map_create_context (PangoOpenGLFontMap *fontmap)
{
  g_return_val_if_fail (PANGO_OPENGL_IS_FONT_MAP (fontmap), NULL);
  
  return pango_fc_font_map_create_context (PANGO_FC_FONT_MAP (fontmap));
}

FT_Library
_pango_opengl_font_map_get_library (PangoFontMap *fontmap_)
{
  PangoOpenGLFontMap *fontmap = (PangoOpenGLFontMap *)fontmap_;
  
  return fontmap->library;
}

/**
 * _pango_opengl_font_map_get_renderer:
 * @fontmap: a #PangoOpenGLFontmap
 * 
 * Gets the singleton PangoOpenGLRenderer for this fontmap.
 * 
 * Return value: 
 **/
PangoRenderer *
_pango_opengl_font_map_get_renderer (PangoOpenGLFontMap *fontmap)
{
  if (!fontmap->renderer)
    fontmap->renderer = g_object_new (PANGO_TYPE_OPENGL_RENDERER, NULL);

  return fontmap->renderer;
}

static void
pango_opengl_font_map_default_substitute (PangoFcFontMap *fcfontmap,
                                       FcPattern      *pattern)
{
  PangoOpenGLFontMap *fontmap = PANGO_OPENGL_FONT_MAP (fcfontmap);

  FcConfigSubstitute (NULL, pattern, FcMatchPattern);

  if (fontmap->substitute_func)
    fontmap->substitute_func (pattern, fontmap->substitute_data);

#if 0
  FcValue v;
  if (FcPatternGet (pattern, FC_DPI, 0, &v) == FcResultNoMatch)
    FcPatternAddDouble (pattern, FC_DPI, fontmap->dpi_y);
#endif
  FcDefaultSubstitute (pattern);
}

static PangoFcFont *
pango_opengl_font_map_new_font (PangoFcFontMap  *fcfontmap,
                                FcPattern       *pattern)
{
  return (PangoFcFont *)_pango_opengl_font_new (PANGO_OPENGL_FONT_MAP (fcfontmap), pattern);
}

static void
pango_opengl_font_map_class_init (PangoOpenGLFontMapClass *class)
{
  GObjectClass *gobject_class = G_OBJECT_CLASS (class);
  PangoFcFontMapClass *fcfontmap_class = PANGO_FC_FONT_MAP_CLASS (class);
  
  gobject_class->finalize = pango_opengl_font_map_finalize;
  fcfontmap_class->default_substitute = pango_opengl_font_map_default_substitute;
  fcfontmap_class->new_font = pango_opengl_font_map_new_font;
}

static void
pango_opengl_font_map_init (PangoOpenGLFontMap *fontmap)
{
  fontmap->library = NULL;
}

Revision:	1.3
Committed:	Sun Apr 5 19:28:54 2009 UTC (15 years, 1 month ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-2_05, rel-2_04, rel-2_10, rel-2_11
Changes since 1.2:	+3 -4 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	/* Pango
2			* OpenGL fonts handling
3			*
4			* Copyright (C) 2000 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			#include <glib.h>
25			#include <stdlib.h>
26			#include <string.h>
27			#include <errno.h>
28
29			#include <fontconfig/fontconfig.h>
30
31			#include "pangoopengl.h"
32
33			struct _PangoOpenGLFontMap
34			{
35			PangoFcFontMap parent_instance;
36
37			FT_Library library;
38
39			/* Function to call on prepared patterns to do final
40			* config tweaking.
41			*/
42			PangoOpenGLSubstituteFunc substitute_func;
43			gpointer substitute_data;
44			GDestroyNotify substitute_destroy;
45
46			PangoRenderer *renderer;
47			};
48
49			struct _PangoOpenGLFontMapClass
50			{
51			PangoFcFontMapClass parent_class;
52			};
53
54			G_DEFINE_TYPE (PangoOpenGLFontMap, pango_opengl_font_map, PANGO_TYPE_FC_FONT_MAP)
55
56			static void
57			pango_opengl_font_map_finalize (GObject *object)
58			{
59			PangoOpenGLFontMap *fontmap = PANGO_OPENGL_FONT_MAP (object);
60
61			if (fontmap->renderer)
62			g_object_unref (fontmap->renderer);
63
64			if (fontmap->substitute_destroy)
65			fontmap->substitute_destroy (fontmap->substitute_data);
66
67			FT_Done_FreeType (fontmap->library);
68
69			G_OBJECT_CLASS (pango_opengl_font_map_parent_class)->finalize (object);
70			}
71
72			PangoFontMap *
73			pango_opengl_font_map_new (void)
74			{
75			PangoOpenGLFontMap *fontmap;
76			FT_Error error;
77
78			/* Make sure that the type system is initialized */
79			g_type_init ();
80
81			fontmap = g_object_new (PANGO_TYPE_OPENGL_FONT_MAP, NULL);
82
83			error = FT_Init_FreeType (&fontmap->library);
84			if (error != FT_Err_Ok)
85			g_critical ("pango_opengl_font_map_new: Could not initialize freetype");
86
87			return (PangoFontMap *)fontmap;
88			}
89
90			void
91			pango_opengl_font_map_set_default_substitute (PangoOpenGLFontMap *fontmap,
92	root	1.3	PangoOpenGLSubstituteFunc func,
93			gpointer data,
94			GDestroyNotify notify)
95	root	1.1	{
96			if (fontmap->substitute_destroy)
97			fontmap->substitute_destroy (fontmap->substitute_data);
98
99			fontmap->substitute_func = func;
100			fontmap->substitute_data = data;
101			fontmap->substitute_destroy = notify;
102
103			pango_fc_font_map_cache_clear (PANGO_FC_FONT_MAP (fontmap));
104			}
105
106			/**
107			* pango_opengl_font_map_substitute_changed:
108			* @fontmap: a #PangoOpenGLFontmap
109			*
110			* Call this function any time the results of the
111			* default substitution function set with
112			* pango_opengl_font_map_set_default_substitute() change.
113			* That is, if your subsitution function will return different
114			* results for the same input pattern, you must call this function.
115			*
116			* Since: 1.2
117			**/
118			void
119			pango_opengl_font_map_substitute_changed (PangoOpenGLFontMap *fontmap)
120			{
121			pango_fc_font_map_cache_clear (PANGO_FC_FONT_MAP (fontmap));
122			}
123
124			/**
125			* pango_opengl_font_map_create_context:
126			* @fontmap: a #PangoOpenGLFontmap
127			*
128			* Create a #PangoContext for the given fontmap.
129			*
130			* Return value: the newly created context; free with g_object_unref().
131			*
132			* Since: 1.2
133			**/
134			PangoContext *
135			pango_opengl_font_map_create_context (PangoOpenGLFontMap *fontmap)
136			{
137			g_return_val_if_fail (PANGO_OPENGL_IS_FONT_MAP (fontmap), NULL);
138
139			return pango_fc_font_map_create_context (PANGO_FC_FONT_MAP (fontmap));
140			}
141
142			FT_Library
143			_pango_opengl_font_map_get_library (PangoFontMap *fontmap_)
144			{
145			PangoOpenGLFontMap fontmap = (PangoOpenGLFontMap )fontmap_;
146
147			return fontmap->library;
148			}
149
150			/**
151			* _pango_opengl_font_map_get_renderer:
152			* @fontmap: a #PangoOpenGLFontmap
153			*
154			* Gets the singleton PangoOpenGLRenderer for this fontmap.
155			*
156			* Return value:
157			**/
158			PangoRenderer *
159			_pango_opengl_font_map_get_renderer (PangoOpenGLFontMap *fontmap)
160			{
161			if (!fontmap->renderer)
162			fontmap->renderer = g_object_new (PANGO_TYPE_OPENGL_RENDERER, NULL);
163
164			return fontmap->renderer;
165			}
166
167			static void
168			pango_opengl_font_map_default_substitute (PangoFcFontMap *fcfontmap,
169			FcPattern *pattern)
170			{
171			PangoOpenGLFontMap *fontmap = PANGO_OPENGL_FONT_MAP (fcfontmap);
172
173			FcConfigSubstitute (NULL, pattern, FcMatchPattern);
174
175			if (fontmap->substitute_func)
176			fontmap->substitute_func (pattern, fontmap->substitute_data);
177
178			#if 0
179	root	1.2	FcValue v;
180	root	1.1	if (FcPatternGet (pattern, FC_DPI, 0, &v) == FcResultNoMatch)
181			FcPatternAddDouble (pattern, FC_DPI, fontmap->dpi_y);
182			#endif
183			FcDefaultSubstitute (pattern);
184			}
185
186			static PangoFcFont *
187			pango_opengl_font_map_new_font (PangoFcFontMap *fcfontmap,
188			FcPattern *pattern)
189			{
190			return (PangoFcFont *)_pango_opengl_font_new (PANGO_OPENGL_FONT_MAP (fcfontmap), pattern);
191			}
192
193			static void
194			pango_opengl_font_map_class_init (PangoOpenGLFontMapClass *class)
195			{
196			GObjectClass *gobject_class = G_OBJECT_CLASS (class);
197			PangoFcFontMapClass *fcfontmap_class = PANGO_FC_FONT_MAP_CLASS (class);
198
199			gobject_class->finalize = pango_opengl_font_map_finalize;
200			fcfontmap_class->default_substitute = pango_opengl_font_map_default_substitute;
201			fcfontmap_class->new_font = pango_opengl_font_map_new_font;
202			}
203
204			static void
205			pango_opengl_font_map_init (PangoOpenGLFontMap *fontmap)
206			{
207			fontmap->library = NULL;
208			}
209