HarfBuzz text shaping engine
http://harfbuzz.github.io/
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121 lines
3.0 KiB
121 lines
3.0 KiB
/* |
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* Copyright (C) 2007,2008,2009 Red Hat, Inc. |
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* |
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* This is part of HarfBuzz, an OpenType Layout engine library. |
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* |
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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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* |
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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): Behdad Esfahbod |
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*/ |
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#ifndef HB_OT_LAYOUT_PRIVATE_H |
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#define HB_OT_LAYOUT_PRIVATE_H |
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#include "hb-private.h" |
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#include "hb-ot-layout.h" |
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#include "hb-font.h" |
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#include "hb-buffer-private.h" |
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HB_BEGIN_DECLS |
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typedef unsigned int hb_ot_layout_class_t; |
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/* |
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* hb_ot_layout_t |
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*/ |
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typedef struct _hb_ot_layout_t hb_ot_layout_t; |
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struct _hb_ot_layout_t |
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{ |
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hb_blob_t *gdef_blob; |
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hb_blob_t *gsub_blob; |
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hb_blob_t *gpos_blob; |
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const struct GDEF *gdef; |
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const struct GSUB *gsub; |
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const struct GPOS *gpos; |
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struct |
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{ |
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unsigned char *klasses; |
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unsigned int len; |
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} new_gdef; |
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}; |
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typedef struct _hb_ot_layout_context_t hb_ot_layout_context_t; |
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struct _hb_ot_layout_context_t |
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{ |
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hb_face_t *face; |
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hb_font_t *font; |
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union info_t |
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{ |
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struct gpos_t |
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{ |
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unsigned int last; /* the last valid glyph--used with cursive positioning */ |
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hb_position_t anchor_x; /* the coordinates of the anchor point */ |
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hb_position_t anchor_y; /* of the last valid glyph */ |
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} gpos; |
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} info; |
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}; |
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void |
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_hb_ot_layout_init (hb_face_t *face); |
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void |
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_hb_ot_layout_fini (hb_face_t *face); |
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/* |
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* GDEF |
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*/ |
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HB_INTERNAL hb_bool_t |
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_hb_ot_layout_has_new_glyph_classes (hb_face_t *face); |
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HB_INTERNAL void |
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_hb_ot_layout_set_glyph_property (hb_face_t *face, |
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hb_codepoint_t glyph, |
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unsigned int property); |
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HB_INTERNAL void |
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_hb_ot_layout_set_glyph_class (hb_face_t *face, |
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hb_codepoint_t glyph, |
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hb_ot_layout_glyph_class_t klass); |
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HB_INTERNAL hb_bool_t |
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_hb_ot_layout_check_glyph_property (hb_face_t *face, |
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hb_internal_glyph_info_t *ginfo, |
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unsigned int lookup_flags, |
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unsigned int *property); |
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HB_INTERNAL hb_bool_t |
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_hb_ot_layout_skip_mark (hb_face_t *face, |
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hb_internal_glyph_info_t *ginfo, |
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unsigned int lookup_flags, |
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unsigned int *property); |
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HB_END_DECLS |
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#endif /* HB_OT_LAYOUT_PRIVATE_H */
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