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/*
* Copyright (C) 1998-2004 David Turner and Werner Lemberg
* Copyright (C) 2004,2007 Red Hat, Inc.
*
* This is part of HarfBuzz, an OpenType Layout engine library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* Red Hat Author(s): Owen Taylor, Behdad Esfahbod
*/
#ifndef HARFBUZZ_BUFFER_H
#define HARFBUZZ_BUFFER_H
#include "harfbuzz-global.h"
HB_BEGIN_HEADER
typedef struct HB_GlyphItemRec_ {
HB_UInt gindex;
HB_UInt properties;
HB_UInt cluster;
HB_UShort component;
HB_UShort ligID;
HB_UShort gproperties;
} HB_GlyphItemRec, *HB_GlyphItem;
typedef struct HB_PositionRec_ {
HB_Fixed x_pos;
HB_Fixed y_pos;
HB_Fixed x_advance;
HB_Fixed y_advance;
HB_UShort back; /* number of glyphs to go back
for drawing current glyph */
HB_Short cursive_chain; /* character to which this connects,
may be positive or negative; used
only internally */
HB_Bool new_advance; /* if set, the advance width values are
absolute, i.e., they won't be
added to the original glyph's value
but rather replace them. */
} HB_PositionRec, *HB_Position;
typedef struct HB_BufferRec_{
HB_UInt allocated;
HB_UInt in_length;
HB_UInt out_length;
HB_UInt in_pos;
HB_UInt out_pos;
HB_GlyphItem in_string;
HB_GlyphItem out_string;
HB_GlyphItem alt_string;
HB_Position positions;
HB_UShort max_ligID;
HB_Bool separate_out;
} HB_BufferRec, *HB_Buffer;
HB_Error
hb_buffer_new( HB_Buffer *buffer );
void
hb_buffer_free( HB_Buffer buffer );
void
hb_buffer_clear( HB_Buffer buffer );
HB_Error
hb_buffer_add_glyph( HB_Buffer buffer,
HB_UInt glyph_index,
HB_UInt properties,
HB_UInt cluster );
HB_END_HEADER
#endif /* HARFBUZZ_BUFFER_H */
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