| 1 | /* |
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| 2 | * Copyright (C) 1998-2004 David Turner and Werner Lemberg |
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| 3 | * Copyright (C) 2004,2007 Red Hat, Inc. |
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| 4 | * |
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| 5 | * This is part of HarfBuzz, an OpenType Layout engine library. |
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| 6 | * |
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| 7 | * Permission is hereby granted, without written agreement and without |
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| 8 | * license or royalty fees, to use, copy, modify, and distribute this |
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| 9 | * software and its documentation for any purpose, provided that the |
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| 10 | * above copyright notice and the following two paragraphs appear in |
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| 11 | * all copies of this software. |
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| 12 | * |
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| 13 | * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
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| 14 | * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
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| 15 | * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN |
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| 16 | * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
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| 17 | * DAMAGE. |
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| 18 | * |
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| 19 | * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
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| 20 | * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
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| 21 | * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
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| 22 | * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
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| 23 | * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
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| 24 | * |
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| 25 | * Red Hat Author(s): Owen Taylor, Behdad Esfahbod |
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| 26 | */ |
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| 27 | |
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| 28 | #ifndef HARFBUZZ_BUFFER_H |
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| 29 | #define HARFBUZZ_BUFFER_H |
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| 30 | |
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| 31 | #include "harfbuzz-global.h" |
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| 32 | |
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| 33 | HB_BEGIN_HEADER |
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| 34 | |
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| 35 | typedef struct HB_GlyphItemRec_ { |
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| 36 | HB_UInt gindex; |
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| 37 | HB_UInt properties; |
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| 38 | HB_UInt cluster; |
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| 39 | HB_UShort component; |
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| 40 | HB_UShort ligID; |
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| 41 | HB_UShort gproperties; |
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| 42 | } HB_GlyphItemRec, *HB_GlyphItem; |
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| 43 | |
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| 44 | typedef struct HB_PositionRec_ { |
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| 45 | HB_Fixed x_pos; |
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| 46 | HB_Fixed y_pos; |
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| 47 | HB_Fixed x_advance; |
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| 48 | HB_Fixed y_advance; |
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| 49 | HB_UShort back; /* number of glyphs to go back |
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| 50 | for drawing current glyph */ |
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| 51 | HB_Short cursive_chain; /* character to which this connects, |
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| 52 | may be positive or negative; used |
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| 53 | only internally */ |
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| 54 | HB_Bool new_advance; /* if set, the advance width values are |
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| 55 | absolute, i.e., they won't be |
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| 56 | added to the original glyph's value |
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| 57 | but rather replace them. */ |
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| 58 | } HB_PositionRec, *HB_Position; |
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| 59 | |
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| 60 | |
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| 61 | typedef struct HB_BufferRec_{ |
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| 62 | HB_UInt allocated; |
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| 63 | |
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| 64 | HB_UInt in_length; |
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| 65 | HB_UInt out_length; |
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| 66 | HB_UInt in_pos; |
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| 67 | HB_UInt out_pos; |
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| 68 | |
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| 69 | HB_GlyphItem in_string; |
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| 70 | HB_GlyphItem out_string; |
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| 71 | HB_GlyphItem alt_string; |
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| 72 | HB_Position positions; |
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| 73 | HB_UShort max_ligID; |
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| 74 | HB_Bool separate_out; |
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| 75 | } HB_BufferRec, *HB_Buffer; |
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| 76 | |
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| 77 | HB_Error |
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| 78 | hb_buffer_new( HB_Buffer *buffer ); |
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| 79 | |
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| 80 | void |
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| 81 | hb_buffer_free( HB_Buffer buffer ); |
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| 82 | |
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| 83 | void |
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| 84 | hb_buffer_clear( HB_Buffer buffer ); |
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| 85 | |
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| 86 | HB_Error |
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| 87 | hb_buffer_add_glyph( HB_Buffer buffer, |
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| 88 | HB_UInt glyph_index, |
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| 89 | HB_UInt properties, |
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| 90 | HB_UInt cluster ); |
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| 91 | |
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| 92 | HB_END_HEADER |
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| 93 | |
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| 94 | #endif /* HARFBUZZ_BUFFER_H */ |
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| 95 | |
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