/usr/include/pango-1.0/pango/pango-glyph.h is in libpango1.0-dev 1.36.3-1ubuntu1.
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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 | /* 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;
/* 1024ths of a device unit */
/**
* PangoGlyphUnit:
*
* The #PangoGlyphUnit type is used to store dimensions within
* Pango. Dimensions are stored in 1/%PANGO_SCALE of a device unit.
* (A device unit might be a pixel for screen display, or
* a point on a printer.) %PANGO_SCALE is currently 1024, and
* may change in the future (unlikely though), but you should not
* depend on its exact value. The PANGO_PIXELS() macro can be used
* to convert from glyph units into device units with correct rounding.
*/
typedef gint32 PangoGlyphUnit;
/* Positioning information about a glyph
*/
/**
* PangoGlyphGeometry:
* @width: the logical width to use for the the character.
* @x_offset: horizontal offset from nominal character position.
* @y_offset: vertical offset from nominal character position.
*
* The #PangoGlyphGeometry structure contains width and positioning
* information for a single glyph.
*/
struct _PangoGlyphGeometry
{
PangoGlyphUnit width;
PangoGlyphUnit x_offset;
PangoGlyphUnit y_offset;
};
/* Visual attributes of a glyph
*/
/**
* PangoGlyphVisAttr:
* @is_cluster_start: set for the first logical glyph in each cluster. (Clusters
* are stored in visual order, within the cluster, glyphs
* are always ordered in logical order, since visual
* order is meaningless; that is, in Arabic text, accent glyphs
* follow the glyphs for the base character.)
*
* The PangoGlyphVisAttr is used to communicate information between
* the shaping phase and the rendering phase. More attributes may be
* added in the future.
*/
struct _PangoGlyphVisAttr
{
guint is_cluster_start : 1;
};
/* A single glyph
*/
/**
* PangoGlyphInfo:
* @glyph: the glyph itself.
* @geometry: the positional information about the glyph.
* @attr: the visual attributes of the glyph.
*
* The #PangoGlyphInfo structure represents a single glyph together with
* positioning information and visual attributes.
* It contains the following fields.
*/
struct _PangoGlyphInfo
{
PangoGlyph glyph;
PangoGlyphGeometry geometry;
PangoGlyphVisAttr attr;
};
/* A string of glyphs with positional information and visual attributes -
* ready for drawing
*/
/**
* PangoGlyphString:
*
* The #PangoGlyphString structure is used to store strings
* of glyphs with geometry and visual attribute information.
* The storage for the glyph information is owned
* by the structure which simplifies memory management.
*/
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;
};
/**
* PANGO_TYPE_GLYPH_STRING:
*
* The #GObject type for #PangoGlyphString.
*/
#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) G_GNUC_CONST;
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);
int pango_glyph_string_get_width(PangoGlyphString *glyphs);
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);
void pango_shape_full (const gchar *item_text,
gint item_length,
const gchar *paragraph_text,
gint paragraph_length,
const PangoAnalysis *analysis,
PangoGlyphString *glyphs);
GList *pango_reorder_items (GList *logical_items);
G_END_DECLS
#endif /* __PANGO_GLYPH_H__ */
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