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Diffstat (limited to 'Build/source/libs/harfbuzz/harfbuzz-0.9.15/src/hb-ot-layout-private.hh')
-rw-r--r-- | Build/source/libs/harfbuzz/harfbuzz-0.9.15/src/hb-ot-layout-private.hh | 273 |
1 files changed, 0 insertions, 273 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-0.9.15/src/hb-ot-layout-private.hh b/Build/source/libs/harfbuzz/harfbuzz-0.9.15/src/hb-ot-layout-private.hh deleted file mode 100644 index 4866c419125..00000000000 --- a/Build/source/libs/harfbuzz/harfbuzz-0.9.15/src/hb-ot-layout-private.hh +++ /dev/null @@ -1,273 +0,0 @@ -/* - * Copyright © 2007,2008,2009 Red Hat, Inc. - * Copyright © 2012 Google, Inc. - * - * This is part of HarfBuzz, a text shaping library. - * - * Permission is hereby granted, without written agreement and without - * license or royalty fees, to use, copy, modify, and distribute this - * software and its documentation for any purpose, provided that the - * above copyright notice and the following two paragraphs appear in - * all copies of this software. - * - * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR - * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES - * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN - * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH - * DAMAGE. - * - * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, - * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS - * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO - * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. - * - * Red Hat Author(s): Behdad Esfahbod - * Google Author(s): Behdad Esfahbod - */ - -#ifndef HB_OT_LAYOUT_PRIVATE_HH -#define HB_OT_LAYOUT_PRIVATE_HH - -#include "hb-private.hh" - -#include "hb-ot-layout.h" - -#include "hb-font-private.hh" -#include "hb-buffer-private.hh" -#include "hb-set-private.hh" - - -/* buffer var allocations, used during the GSUB/GPOS processing */ -#define glyph_props() var1.u16[0] /* GDEF glyph properties */ -#define syllable() var1.u8[2] /* GSUB/GPOS shaping boundaries */ -#define lig_props() var1.u8[3] /* GSUB/GPOS ligature tracking */ - -/* buffer var allocations, used during the entire shaping process */ -#define unicode_props0() var2.u8[0] -#define unicode_props1() var2.u8[1] - - -inline void -_hb_glyph_info_set_unicode_props (hb_glyph_info_t *info, hb_unicode_funcs_t *unicode) -{ - info->unicode_props0() = ((unsigned int) unicode->general_category (info->codepoint)) | - (unicode->is_default_ignorable (info->codepoint) ? 0x80 : 0) | - (info->codepoint == 0x200C ? 0x40 : 0) | - (info->codepoint == 0x200D ? 0x20 : 0); - info->unicode_props1() = unicode->modified_combining_class (info->codepoint); -} - -inline hb_unicode_general_category_t -_hb_glyph_info_get_general_category (const hb_glyph_info_t *info) -{ - return (hb_unicode_general_category_t) (info->unicode_props0() & 0x1F); -} - -inline void -_hb_glyph_info_set_modified_combining_class (hb_glyph_info_t *info, unsigned int modified_class) -{ - info->unicode_props1() = modified_class; -} - -inline unsigned int -_hb_glyph_info_get_modified_combining_class (const hb_glyph_info_t *info) -{ - return info->unicode_props1(); -} - -inline hb_bool_t -_hb_glyph_info_is_default_ignorable (const hb_glyph_info_t *info) -{ - return !!(info->unicode_props0() & 0x80); -} - -inline hb_bool_t -_hb_glyph_info_is_zwnj (const hb_glyph_info_t *info) -{ - return !!(info->unicode_props0() & 0x40); -} - -inline hb_bool_t -_hb_glyph_info_is_zwj (const hb_glyph_info_t *info) -{ - return !!(info->unicode_props0() & 0x20); -} - - -#define hb_ot_layout_from_face(face) ((hb_ot_layout_t *) face->shaper_data.ot) - -/* - * GDEF - */ - -typedef enum { - HB_OT_LAYOUT_GLYPH_PROPS_UNCLASSIFIED = 1 << HB_OT_LAYOUT_GLYPH_CLASS_UNCLASSIFIED, - HB_OT_LAYOUT_GLYPH_PROPS_BASE_GLYPH = 1 << HB_OT_LAYOUT_GLYPH_CLASS_BASE_GLYPH, - HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE = 1 << HB_OT_LAYOUT_GLYPH_CLASS_LIGATURE, - HB_OT_LAYOUT_GLYPH_PROPS_MARK = 1 << HB_OT_LAYOUT_GLYPH_CLASS_MARK, - HB_OT_LAYOUT_GLYPH_PROPS_COMPONENT = 1 << HB_OT_LAYOUT_GLYPH_CLASS_COMPONENT -} hb_ot_layout_glyph_class_mask_t; - - - -/* - * GSUB/GPOS - */ - -/* lig_id / lig_comp - * - * When a ligature is formed: - * - * - The ligature glyph and any marks in between all the same newly allocated - * lig_id, - * - The ligature glyph will get lig_num_comps set to the number of components - * - The marks get lig_comp > 0, reflecting which component of the ligature - * they were applied to. - * - This is used in GPOS to attach marks to the right component of a ligature - * in MarkLigPos. - * - * When a multiple-substitution is done: - * - * - All resulting glyphs will have lig_id = 0, - * - The resulting glyphs will have lig_comp = 0, 1, 2, ... respectively. - * - This is used in GPOS to attach marks to the first component of a - * multiple substitution in MarkBasePos. - * - * The numbers are also used in GPOS to do mark-to-mark positioning only - * to marks that belong to the same component of a ligature in MarkMarPos. - */ -#define IS_LIG_BASE 0x10 -static inline void -set_lig_props_for_ligature (hb_glyph_info_t &info, unsigned int lig_id, unsigned int lig_num_comps) -{ - info.lig_props() = (lig_id << 5) | IS_LIG_BASE | (lig_num_comps & 0x0F); -} -static inline void -set_lig_props_for_mark (hb_glyph_info_t &info, unsigned int lig_id, unsigned int lig_comp) -{ - info.lig_props() = (lig_id << 5) | (lig_comp & 0x0F); -} -static inline void -set_lig_props_for_component (hb_glyph_info_t &info, unsigned int comp) -{ - set_lig_props_for_mark (info, 0, comp); -} - -static inline unsigned int -get_lig_id (const hb_glyph_info_t &info) -{ - return info.lig_props() >> 5; -} -static inline bool -is_a_ligature (const hb_glyph_info_t &info) -{ - return !!(info.lig_props() & IS_LIG_BASE); -} -static inline unsigned int -get_lig_comp (const hb_glyph_info_t &info) -{ - if (is_a_ligature (info)) - return 0; - else - return info.lig_props() & 0x0F; -} -static inline unsigned int -get_lig_num_comps (const hb_glyph_info_t &info) -{ - if ((info.glyph_props() & HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE) && is_a_ligature (info)) - return info.lig_props() & 0x0F; - else - return 1; -} - -static inline uint8_t allocate_lig_id (hb_buffer_t *buffer) { - uint8_t lig_id = buffer->next_serial () & 0x07; - if (unlikely (!lig_id)) - lig_id = allocate_lig_id (buffer); /* in case of overflow */ - return lig_id; -} - - -HB_INTERNAL hb_bool_t -hb_ot_layout_lookup_would_substitute_fast (hb_face_t *face, - unsigned int lookup_index, - const hb_codepoint_t *glyphs, - unsigned int glyphs_length, - hb_bool_t zero_context); - - -/* Should be called before all the substitute_lookup's are done. */ -HB_INTERNAL void -hb_ot_layout_substitute_start (hb_font_t *font, - hb_buffer_t *buffer); - -HB_INTERNAL hb_bool_t -hb_ot_layout_substitute_lookup (hb_font_t *font, - hb_buffer_t *buffer, - unsigned int lookup_index, - hb_mask_t mask, - hb_bool_t auto_zwj); - -/* Should be called after all the substitute_lookup's are done */ -HB_INTERNAL void -hb_ot_layout_substitute_finish (hb_font_t *font, - hb_buffer_t *buffer); - - -/* Should be called before all the position_lookup's are done. Resets positions to zero. */ -HB_INTERNAL void -hb_ot_layout_position_start (hb_font_t *font, - hb_buffer_t *buffer); - -HB_INTERNAL hb_bool_t -hb_ot_layout_position_lookup (hb_font_t *font, - hb_buffer_t *buffer, - unsigned int lookup_index, - hb_mask_t mask, - hb_bool_t auto_zwj); - -/* Should be called after all the position_lookup's are done */ -HB_INTERNAL void -hb_ot_layout_position_finish (hb_font_t *font, - hb_buffer_t *buffer); - - - -/* - * hb_ot_layout_t - */ - -namespace OT { - struct GDEF; - struct GSUB; - struct GPOS; -} - -struct hb_ot_layout_t -{ - hb_blob_t *gdef_blob; - hb_blob_t *gsub_blob; - hb_blob_t *gpos_blob; - - const struct OT::GDEF *gdef; - const struct OT::GSUB *gsub; - const struct OT::GPOS *gpos; - - unsigned int gsub_lookup_count; - unsigned int gpos_lookup_count; - - hb_set_digest_t *gsub_digests; - hb_set_digest_t *gpos_digests; -}; - - -HB_INTERNAL hb_ot_layout_t * -_hb_ot_layout_create (hb_face_t *face); - -HB_INTERNAL void -_hb_ot_layout_destroy (hb_ot_layout_t *layout); - - - -#endif /* HB_OT_LAYOUT_PRIVATE_HH */ |