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| 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_H | |
| 29 #define HARFBUZZ_BUFFER_H | |
| 30 | |
| 31 #include "harfbuzz-global.h" | |
| 32 | |
| 33 HB_BEGIN_HEADER | |
| 34 | |
| 35 #ifdef HB_USE_PACKED_STRUCTS | |
| 36 #pragma pack(push, 1) | |
| 37 #endif | |
| 38 | |
| 39 typedef struct HB_GlyphItemRec_ { | |
| 40 HB_UInt gindex; | |
| 41 HB_UInt properties; | |
| 42 HB_UInt cluster; | |
| 43 HB_UShort component; | |
| 44 HB_UShort ligID; | |
| 45 HB_UShort gproperties; | |
| 46 } HB_GlyphItemRec, *HB_GlyphItem; | |
| 47 | |
| 48 typedef struct HB_PositionRec_ { | |
| 49 HB_Fixed x_pos; | |
| 50 HB_Fixed y_pos; | |
| 51 HB_Fixed x_advance; | |
| 52 HB_Fixed y_advance; | |
| 53 HB_UShort back; /* number of glyphs to go back | |
| 54 for drawing current glyph */ | |
| 55 HB_Short cursive_chain; /* character to which this connects, | |
| 56 may be positive or negative; used | |
| 57 only internally */ | |
| 58 HB_Bool new_advance; /* if set, the advance width values are | |
| 59 absolute, i.e., they won't be | |
| 60 added to the original glyph's value | |
| 61 but rather replace them. */ | |
| 62 } HB_PositionRec, *HB_Position; | |
| 63 | |
| 64 | |
| 65 typedef struct HB_BufferRec_{ | |
| 66 HB_UInt allocated; | |
| 67 | |
| 68 HB_UInt in_length; | |
| 69 HB_UInt out_length; | |
| 70 HB_UInt in_pos; | |
| 71 HB_UInt out_pos; | |
| 72 | |
| 73 HB_GlyphItem in_string; | |
| 74 HB_GlyphItem out_string; | |
| 75 HB_GlyphItem alt_string; | |
| 76 HB_Position positions; | |
| 77 HB_UShort max_ligID; | |
| 78 HB_Bool separate_out; | |
| 79 } HB_BufferRec, *HB_Buffer; | |
| 80 | |
| 81 HB_Error | |
| 82 hb_buffer_new( HB_Buffer *buffer ); | |
| 83 | |
| 84 void | |
| 85 hb_buffer_free( HB_Buffer buffer ); | |
| 86 | |
| 87 void | |
| 88 hb_buffer_clear( HB_Buffer buffer ); | |
| 89 | |
| 90 HB_Error | |
| 91 hb_buffer_add_glyph( HB_Buffer buffer, | |
| 92 HB_UInt glyph_index, | |
| 93 HB_UInt properties, | |
| 94 HB_UInt cluster ); | |
| 95 | |
| 96 #ifdef HB_USE_PACKED_STRUCTS | |
| 97 #pragma pack(pop) | |
| 98 #endif | |
| 99 | |
| 100 HB_END_HEADER | |
| 101 | |
| 102 #endif /* HARFBUZZ_BUFFER_H */ | |
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