2008-01-15 23:46:32 +01:00
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/*
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* Copyright (C) 1998-2004 David Turner and Werner Lemberg
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* Copyright (C) 2004,2007 Red Hat, Inc.
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2007-10-11 10:30:50 +02:00
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*
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2008-01-15 23:46:32 +01:00
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* This is part of HarfBuzz, an OpenType Layout engine library.
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2007-10-11 10:30:50 +02:00
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*
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2008-01-15 23:46:32 +01:00
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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2007-10-11 10:30:50 +02:00
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*
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2008-01-15 23:46:32 +01:00
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Red Hat Author(s): Owen Taylor, Behdad Esfahbod
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2007-10-11 10:30:50 +02:00
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*/
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2008-01-15 23:46:32 +01:00
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2007-10-11 10:30:50 +02:00
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#ifndef HARFBUZZ_BUFFER_PRIVATE_H
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#define HARFBUZZ_BUFFER_PRIVATE_H
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#include "harfbuzz-impl.h"
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#include "harfbuzz-buffer.h"
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2007-10-25 00:44:47 +02:00
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HB_BEGIN_HEADER
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2007-10-11 10:30:50 +02:00
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#define HB_GLYPH_PROPERTIES_UNKNOWN 0xFFFF
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HB_INTERNAL void
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_hb_buffer_swap( HB_Buffer buffer );
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HB_INTERNAL void
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_hb_buffer_clear_output( HB_Buffer buffer );
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HB_INTERNAL HB_Error
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_hb_buffer_clear_positions( HB_Buffer buffer );
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HB_INTERNAL HB_Error
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_hb_buffer_add_output_glyphs( HB_Buffer buffer,
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2007-10-25 00:44:47 +02:00
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HB_UShort num_in,
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HB_UShort num_out,
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HB_UShort *glyph_data,
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HB_UShort component,
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HB_UShort ligID );
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2007-10-11 10:30:50 +02:00
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HB_INTERNAL HB_Error
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_hb_buffer_add_output_glyph ( HB_Buffer buffer,
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HB_UInt glyph_index,
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HB_UShort component,
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HB_UShort ligID );
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2007-10-11 10:30:50 +02:00
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HB_INTERNAL HB_Error
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_hb_buffer_copy_output_glyph ( HB_Buffer buffer );
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HB_INTERNAL HB_Error
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_hb_buffer_replace_output_glyph ( HB_Buffer buffer,
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HB_UInt glyph_index,
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HB_Bool inplace );
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2007-10-11 10:30:50 +02:00
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2007-10-25 00:44:47 +02:00
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HB_INTERNAL HB_UShort
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2007-10-11 10:30:50 +02:00
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_hb_buffer_allocate_ligid( HB_Buffer buffer );
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2007-11-07 09:06:01 +01:00
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/* convenience macros */
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#define IN_GLYPH( pos ) (buffer->in_string[(pos)].gindex)
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#define IN_ITEM( pos ) (&buffer->in_string[(pos)])
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#define IN_CURGLYPH() (buffer->in_string[buffer->in_pos].gindex)
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#define IN_CURITEM() (&buffer->in_string[buffer->in_pos])
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#define IN_PROPERTIES( pos ) (buffer->in_string[(pos)].properties)
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#define IN_LIGID( pos ) (buffer->in_string[(pos)].ligID)
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#define IN_COMPONENT( pos ) (buffer->in_string[(pos)].component)
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#define POSITION( pos ) (&buffer->positions[(pos)])
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#define OUT_GLYPH( pos ) (buffer->out_string[(pos)].gindex)
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#define OUT_ITEM( pos ) (&buffer->out_string[(pos)])
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#define CHECK_Property( gdef, index, flags, property ) \
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( ( error = _HB_GDEF_Check_Property( (gdef), (index), (flags), \
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(property) ) ) != HB_Err_Ok )
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#define ADD_String( buffer, num_in, num_out, glyph_data, component, ligID ) \
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( ( error = _hb_buffer_add_output_glyphs( (buffer), \
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(num_in), (num_out), \
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(glyph_data), (component), (ligID) \
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) ) != HB_Err_Ok )
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#define ADD_Glyph( buffer, glyph_index, component, ligID ) \
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( ( error = _hb_buffer_add_output_glyph( (buffer), \
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(glyph_index), (component), (ligID) \
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) ) != HB_Err_Ok )
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#define REPLACE_Glyph( buffer, glyph_index, nesting_level ) \
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( ( error = _hb_buffer_replace_output_glyph( (buffer), (glyph_index), \
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(nesting_level) == 1 ) ) != HB_Err_Ok )
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#define COPY_Glyph( buffer ) \
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( (error = _hb_buffer_copy_output_glyph ( buffer ) ) != HB_Err_Ok )
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2007-10-25 00:44:47 +02:00
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HB_END_HEADER
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2007-10-11 10:30:50 +02:00
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#endif /* HARFBUZZ_BUFFER_PRIVATE_H */
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