1/* 2 * Copyright (C) 1998-2004 David Turner and Werner Lemberg 3 * Copyright (C) 2004,2007 Red Hat, Inc. 4 * 5 * This is part of HarfBuzz, an OpenType Layout engine library. 6 * 7 * Permission is hereby granted, without written agreement and without 8 * license or royalty fees, to use, copy, modify, and distribute this 9 * software and its documentation for any purpose, provided that the 10 * above copyright notice and the following two paragraphs appear in 11 * all copies of this software. 12 * 13 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR 14 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 15 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN 16 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 17 * DAMAGE. 18 * 19 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, 20 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 21 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 22 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO 23 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. 24 * 25 * Red Hat Author(s): Owen Taylor, Behdad Esfahbod 26 */ 27 28#ifndef HARFBUZZ_BUFFER_PRIVATE_H 29#define HARFBUZZ_BUFFER_PRIVATE_H 30 31#include "harfbuzz-impl.h" 32#include "harfbuzz-buffer.h" 33 34HB_BEGIN_HEADER 35 36#define HB_GLYPH_PROPERTIES_UNKNOWN 0xFFFF 37 38HB_INTERNAL void 39_hb_buffer_swap( HB_Buffer buffer ); 40 41HB_INTERNAL void 42_hb_buffer_clear_output( HB_Buffer buffer ); 43 44HB_INTERNAL HB_Error 45_hb_buffer_clear_positions( HB_Buffer buffer ); 46 47HB_INTERNAL HB_Error 48_hb_buffer_add_output_glyphs( HB_Buffer buffer, 49 HB_UShort num_in, 50 HB_UShort num_out, 51 HB_UShort *glyph_data, 52 HB_UShort component, 53 HB_UShort ligID ); 54 55HB_INTERNAL HB_Error 56_hb_buffer_add_output_glyph ( HB_Buffer buffer, 57 HB_UInt glyph_index, 58 HB_UShort component, 59 HB_UShort ligID ); 60 61HB_INTERNAL HB_Error 62_hb_buffer_copy_output_glyph ( HB_Buffer buffer ); 63 64HB_INTERNAL HB_Error 65_hb_buffer_replace_output_glyph ( HB_Buffer buffer, 66 HB_UInt glyph_index, 67 HB_Bool inplace ); 68 69HB_INTERNAL HB_UShort 70_hb_buffer_allocate_ligid( HB_Buffer buffer ); 71 72 73/* convenience macros */ 74 75#define IN_GLYPH( pos ) (buffer->in_string[(pos)].gindex) 76#define IN_ITEM( pos ) (&buffer->in_string[(pos)]) 77#define IN_CURGLYPH() (buffer->in_string[buffer->in_pos].gindex) 78#define IN_CURITEM() (&buffer->in_string[buffer->in_pos]) 79#define IN_PROPERTIES( pos ) (buffer->in_string[(pos)].properties) 80#define IN_LIGID( pos ) (buffer->in_string[(pos)].ligID) 81#define IN_COMPONENT( pos ) (buffer->in_string[(pos)].component) 82#define POSITION( pos ) (&buffer->positions[(pos)]) 83#define OUT_GLYPH( pos ) (buffer->out_string[(pos)].gindex) 84#define OUT_ITEM( pos ) (&buffer->out_string[(pos)]) 85 86#define CHECK_Property( gdef, index, flags, property ) \ 87 ( ( error = _HB_GDEF_Check_Property( (gdef), (index), (flags), \ 88 (property) ) ) != HB_Err_Ok ) 89 90#define ADD_String( buffer, num_in, num_out, glyph_data, component, ligID ) \ 91 ( ( error = _hb_buffer_add_output_glyphs( (buffer), \ 92 (num_in), (num_out), \ 93 (glyph_data), (component), (ligID) \ 94 ) ) != HB_Err_Ok ) 95#define ADD_Glyph( buffer, glyph_index, component, ligID ) \ 96 ( ( error = _hb_buffer_add_output_glyph( (buffer), \ 97 (glyph_index), (component), (ligID) \ 98 ) ) != HB_Err_Ok ) 99#define REPLACE_Glyph( buffer, glyph_index, nesting_level ) \ 100 ( ( error = _hb_buffer_replace_output_glyph( (buffer), (glyph_index), \ 101 (nesting_level) == 1 ) ) != HB_Err_Ok ) 102#define COPY_Glyph( buffer ) \ 103 ( (error = _hb_buffer_copy_output_glyph ( buffer ) ) != HB_Err_Ok ) 104 105HB_END_HEADER 106 107#endif /* HARFBUZZ_BUFFER_PRIVATE_H */ 108