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Diffstat (limited to 'gfx/harfbuzz/src/hb-static.cc')
-rw-r--r-- | gfx/harfbuzz/src/hb-static.cc | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/gfx/harfbuzz/src/hb-static.cc b/gfx/harfbuzz/src/hb-static.cc new file mode 100644 index 0000000000..a1a2522edf --- /dev/null +++ b/gfx/harfbuzz/src/hb-static.cc @@ -0,0 +1,135 @@ +/* + * Copyright © 2018 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. + * + * Google Author(s): Behdad Esfahbod + */ + +#include "hb.hh" + +#include "hb-open-type.hh" +#include "hb-face.hh" + +#include "hb-aat-layout-common.hh" +#include "hb-aat-layout-feat-table.hh" +#include "hb-ot-layout-common.hh" +#include "hb-ot-cmap-table.hh" +#include "OT/Color/COLR/COLR.hh" +#include "hb-ot-glyf-table.hh" +#include "hb-ot-head-table.hh" +#include "hb-ot-hmtx-table.hh" +#include "hb-ot-maxp-table.hh" + +#ifndef HB_NO_VISIBILITY +#include "hb-ot-name-language-static.hh" + +uint64_t const _hb_NullPool[(HB_NULL_POOL_SIZE + sizeof (uint64_t) - 1) / sizeof (uint64_t)] = {}; +/*thread_local*/ uint64_t _hb_CrapPool[(HB_NULL_POOL_SIZE + sizeof (uint64_t) - 1) / sizeof (uint64_t)] = {}; + +DEFINE_NULL_NAMESPACE_BYTES (OT, Index) = {0xFF,0xFF}; +DEFINE_NULL_NAMESPACE_BYTES (OT, VarIdx) = {0xFF,0xFF,0xFF,0xFF}; +DEFINE_NULL_NAMESPACE_BYTES (OT, LangSys) = {0x00,0x00, 0xFF,0xFF, 0x00,0x00}; +DEFINE_NULL_NAMESPACE_BYTES (OT, RangeRecord) = {0x01}; +DEFINE_NULL_NAMESPACE_BYTES (OT, ClipRecord) = {0x01}; +DEFINE_NULL_NAMESPACE_BYTES (OT, CmapSubtableLongGroup) = {0x00,0x00,0x00,0x01, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00}; +DEFINE_NULL_NAMESPACE_BYTES (AAT, SettingName) = {0xFF,0xFF, 0xFF,0xFF}; +DEFINE_NULL_NAMESPACE_BYTES (AAT, Lookup) = {0xFF,0xFF}; + + +/* hb_map_t */ + +const hb_codepoint_t minus_1 = -1; + +/* hb_face_t */ + +#ifndef HB_NO_BEYOND_64K +static inline unsigned +load_num_glyphs_from_loca (const hb_face_t *face) +{ + unsigned ret = 0; + + unsigned indexToLocFormat = face->table.head->indexToLocFormat; + + if (indexToLocFormat <= 1) + { + bool short_offset = 0 == indexToLocFormat; + hb_blob_t *loca_blob = face->table.loca.get_blob (); + ret = hb_max (1u, loca_blob->length / (short_offset ? 2 : 4)) - 1; + } + + return ret; +} +#endif + +static inline unsigned +load_num_glyphs_from_maxp (const hb_face_t *face) +{ + return face->table.maxp->get_num_glyphs (); +} + +unsigned int +hb_face_t::load_num_glyphs () const +{ + unsigned ret = 0; + +#ifndef HB_NO_BEYOND_64K + ret = hb_max (ret, load_num_glyphs_from_loca (this)); +#endif + + ret = hb_max (ret, load_num_glyphs_from_maxp (this)); + + num_glyphs = ret; + return ret; +} + +unsigned int +hb_face_t::load_upem () const +{ + unsigned int ret = table.head->get_upem (); + upem = ret; + return ret; +} + + +#ifndef HB_NO_VAR +bool +_glyf_get_leading_bearing_with_var_unscaled (hb_font_t *font, hb_codepoint_t glyph, bool is_vertical, + int *lsb) +{ + return font->face->table.glyf->get_leading_bearing_with_var_unscaled (font, glyph, is_vertical, lsb); +} + +unsigned +_glyf_get_advance_with_var_unscaled (hb_font_t *font, hb_codepoint_t glyph, bool is_vertical) +{ + return font->face->table.glyf->get_advance_with_var_unscaled (font, glyph, is_vertical); +} +#endif + +bool +_glyf_get_leading_bearing_without_var_unscaled (hb_face_t *face, hb_codepoint_t gid, bool is_vertical, int *lsb) +{ + return face->table.glyf->get_leading_bearing_without_var_unscaled (gid, is_vertical, lsb); +} + + +#endif |