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/* 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__
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
typedef struct _PangoGlyphGeometry PangoGlyphGeometry;
typedef struct _PangoGlyphVisAttr PangoGlyphVisAttr;
typedef struct _PangoGlyphInfo PangoGlyphInfo;
typedef struct _PangoGlyphString PangoGlyphString;
/* 64'ths of a point - 1/4608 in, 5.51 * 10^-5 in. */
typedef guint32 PangoGlyphUnit;
/* A index of a glyph into a font. Rendering system dependent
*/
typedef guint32 PangoGlyph;
/* 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 character index
* of the start of the cluster to which the glyph belongs.
*/
gint *log_clusters;
/*< private >*/
gint space;
};
PangoGlyphString *pango_glyph_string_new (void);
void pango_glyph_string_set_size (PangoGlyphString *string,
gint new_len);
void pango_glyph_string_free (PangoGlyphString *string);
void pango_cp_to_x (gchar *text,
gint length,
PangoAnalysis *analysis,
PangoGlyphString *glyphs,
gint char_pos,
gboolean trailing,
gint *x_pos);
void pango_x_to_cp (gchar *text,
gint length,
PangoAnalysis *analysis,
PangoGlyphString *glyphs,
gint x_pos,
gint *char_pos,
gint *trailing);
void pango_justify (PangoGlyphString *glyphs,
gint new_line_width,
gint min_kashida_width);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif __PANGO_GLYPH_H__
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