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pango-glyph.h
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
00002  * Pango
00003  * pango-glyph.h:
00004  *
00005  * ***** BEGIN LICENSE BLOCK *****
00006  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00007  *
00008  * The contents of this file are subject to the Mozilla Public License Version
00009  * 1.1 (the "License"); you may not use this file except in compliance with
00010  * the License. You may obtain a copy of the License at
00011  * http://www.mozilla.org/MPL/
00012  *
00013  * Software distributed under the License is distributed on an "AS IS" basis,
00014  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00015  * for the specific language governing rights and limitations under the
00016  * License.
00017  *
00018  * The Original Code is the Pango Library (www.pango.org).
00019  *
00020  * The Initial Developer of the Original Code is
00021  * Red Hat Software.
00022  * Portions created by the Initial Developer are Copyright (C) 2000
00023  * the Initial Developer. All Rights Reserved.
00024  *
00025  * Contributor(s):
00026  *
00027  * Alternatively, the contents of this file may be used under the terms of
00028  * either of the GNU General Public License Version 2 or later (the "GPL"),
00029  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00030  * in which case the provisions of the GPL or the LGPL are applicable instead
00031  * of those above. If you wish to allow use of your version of this file only
00032  * under the terms of either the GPL or the LGPL, and not to allow others to
00033  * use your version of this file under the terms of the MPL, indicate your
00034  * decision by deleting the provisions above and replace them with the notice
00035  * and other provisions required by the GPL or the LGPL. If you do not delete
00036  * the provisions above, a recipient may use your version of this file under
00037  * the terms of any one of the MPL, the GPL or the LGPL.
00038  *
00039  * ***** END LICENSE BLOCK ***** */
00040 
00041 #ifndef __PANGO_GLYPH_H__
00042 #define __PANGO_GLYPH_H__
00043 
00044 #include "pango-types.h"
00045 
00046 #ifdef __cplusplus
00047 extern "C" {
00048 #endif /* __cplusplus */
00049 
00050 typedef struct _PangoliteGlyphInfo PangoliteGlyphInfo;
00051 typedef struct _PangoliteGlyphString PangoliteGlyphString;
00052 
00053 /* 1000ths of a device unit */
00054 typedef gint32 PangoliteGlyphUnit;
00055 
00056 
00057 /* A single glyph 
00058  */
00059 struct _PangoliteGlyphInfo
00060 {
00061   PangoliteGlyph glyph;
00062   gint           is_cluster_start;
00063 };
00064 
00065 /* A string of glyphs with positional information and visual attributes -
00066  * ready for drawing
00067  */
00068 struct _PangoliteGlyphString {
00069   gint num_glyphs;
00070 
00071   PangoliteGlyphInfo *glyphs;
00072 
00073   /* This is a memory inefficient way of representing the information
00074    * here - each value gives the byte index within the text
00075    * corresponding to the glyph string of the start of the cluster to
00076    * which the glyph belongs.
00077    */
00078   gint *log_clusters;
00079 
00080   /*< private >*/
00081   gint space;
00082 };
00083 
00084 PangoliteGlyphString *pangolite_glyph_string_new(void);
00085 void pangolite_glyph_string_set_size(PangoliteGlyphString *string, gint new_len);
00086 void pangolite_glyph_string_free(PangoliteGlyphString *string);
00087 
00088 
00089 
00090 /* Turn a string of characters into a string of glyphs */
00091 void pangolite_shape(const gunichar2  *text,
00092                  gint             length,
00093                  PangoliteAnalysis    *analysis,
00094                  PangoliteGlyphString *glyphs);
00095 
00096 #ifdef __cplusplus
00097 }
00098 #endif /* __cplusplus */
00099 
00100 #endif /* __PANGO_GLYPH_H__ */