1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
/* Pango
* pango-glyph.h: Glyph storage
*
* Copyright (C) 2000 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_GLYPH_H__
#define __PANGO_GLYPH_H__
#include <pango/pango-types.h>
#include <pango/pango-item.h>
G_BEGIN_DECLS
typedef struct _PangoGlyphGeometry PangoGlyphGeometry;
typedef struct _PangoGlyphVisAttr PangoGlyphVisAttr;
typedef struct _PangoGlyphInfo PangoGlyphInfo;
typedef struct _PangoGlyphString PangoGlyphString;
/* 1000ths of a device unit */
typedef gint32 PangoGlyphUnit;
/* Positioning information about a glyph
*/
struct _PangoGlyphGeometry
{
PangoGlyphUnit width;
PangoGlyphUnit x_offset;
PangoGlyphUnit y_offset;
};
/* Visual attributes of a glyph
*/
struct _PangoGlyphVisAttr
{
guint is_cluster_start : 1;
};
/* A single glyph
*/
struct _PangoGlyphInfo
{
PangoGlyph glyph;
PangoGlyphGeometry geometry;
PangoGlyphVisAttr attr;
};
/* A string of glyphs with positional information and visual attributes -
* ready for drawing
*/
struct _PangoGlyphString {
gint num_glyphs;
PangoGlyphInfo *glyphs;
/* This is a memory inefficient way of representing the information
* here - each value gives the byte index within the text
* corresponding to the glyph string of the start of the cluster to
* which the glyph belongs.
*/
gint *log_clusters;
/*< private >*/
gint space;
};
#define PANGO_TYPE_GLYPH_STRING (pango_glyph_string_get_type ())
PangoGlyphString *pango_glyph_string_new (void);
void pango_glyph_string_set_size (PangoGlyphString *string,
gint new_len);
GType pango_glyph_string_get_type (void);
PangoGlyphString *pango_glyph_string_copy (PangoGlyphString *string);
void pango_glyph_string_free (PangoGlyphString *string);
void pango_glyph_string_extents (PangoGlyphString *glyphs,
PangoFont *font,
PangoRectangle *ink_rect,
PangoRectangle *logical_rect);
void pango_glyph_string_extents_range (PangoGlyphString *glyphs,
int start,
int end,
PangoFont *font,
PangoRectangle *ink_rect,
PangoRectangle *logical_rect);
void pango_glyph_string_get_logical_widths (PangoGlyphString *glyphs,
const char *text,
int length,
int embedding_level,
int *logical_widths);
void pango_glyph_string_index_to_x (PangoGlyphString *glyphs,
char *text,
int length,
PangoAnalysis *analysis,
int index_,
gboolean trailing,
int *x_pos);
void pango_glyph_string_x_to_index (PangoGlyphString *glyphs,
char *text,
int length,
PangoAnalysis *analysis,
int x_pos,
int *index_,
int *trailing);
/* Turn a string of characters into a string of glyphs
*/
void pango_shape (const gchar *text,
gint length,
const PangoAnalysis *analysis,
PangoGlyphString *glyphs);
GList *pango_reorder_items (GList *logical_items);
G_END_DECLS
#endif /* __PANGO_GLYPH_H__ */
|
