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 34 HB_BEGIN_HEADER 35 36 #define HB_GLYPH_PROPERTIES_UNKNOWN 0xFFFF 37 38 HB_INTERNAL void 39 _hb_buffer_swap( HB_Buffer buffer ); 40 41 HB_INTERNAL void 42 _hb_buffer_clear_output( HB_Buffer buffer ); 43 44 HB_INTERNAL HB_Error 45 _hb_buffer_clear_positions( HB_Buffer buffer ); 46 47 HB_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 55 HB_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 61 HB_INTERNAL HB_Error 62 _hb_buffer_copy_output_glyph ( HB_Buffer buffer ); 63 64 HB_INTERNAL HB_Error 65 _hb_buffer_replace_output_glyph ( HB_Buffer buffer, 66 HB_UInt glyph_index, 67 HB_Bool inplace ); 68 69 HB_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 ) 104 105 HB_END_HEADER 106 107 #endif /* HARFBUZZ_BUFFER_PRIVATE_H */ 108
