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Diffstat (limited to 'Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-color-svg-table.hh')
-rw-r--r-- | Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-color-svg-table.hh | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-color-svg-table.hh b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-color-svg-table.hh new file mode 100644 index 00000000000..ed6cf970820 --- /dev/null +++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-color-svg-table.hh @@ -0,0 +1,145 @@ +/* + * Copyright © 2018 Ebrahim Byagowi + * + * 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. + */ + +#ifndef HB_OT_COLOR_SVG_TABLE_HH +#define HB_OT_COLOR_SVG_TABLE_HH + +#include "hb-open-type-private.hh" + +/* + * SVG -- SVG (Scalable Vector Graphics) + * https://docs.microsoft.com/en-us/typography/opentype/spec/svg + */ + +#define HB_OT_TAG_SVG HB_TAG('S','V','G',' ') + + +namespace OT { + + +struct SVGDocumentIndexEntry +{ + friend struct SVG; + + inline bool sanitize (hb_sanitize_context_t *c, const void* base) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + (base+svgDoc).sanitize (c, svgDocLength)); + } + + protected: + HBUINT16 startGlyphID; /* The first glyph ID in the range described by + * this index entry. */ + HBUINT16 endGlyphID; /* The last glyph ID in the range described by + * this index entry. Must be >= startGlyphID. */ + LOffsetTo<UnsizedArrayOf<HBUINT8> > + svgDoc; /* Offset from the beginning of the SVG Document Index + * to an SVG document. Must be non-zero. */ + HBUINT32 svgDocLength; /* Length of the SVG document. + * Must be non-zero. */ + public: + DEFINE_SIZE_STATIC (12); +}; + +struct SVGDocumentIndex +{ + friend struct SVG; + + inline bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + entries.sanitize (c, this)); + } + + protected: + ArrayOf<SVGDocumentIndexEntry> + entries; /* Array of SVG Document Index Entries. */ + public: + DEFINE_SIZE_ARRAY (2, entries); +}; + +struct SVG +{ + static const hb_tag_t tableTag = HB_OT_TAG_SVG; + + inline bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (likely (c->check_struct (this) && + (this+svgDocIndex).sanitize (c))); + } + + struct accelerator_t + { + inline void init (hb_face_t *face) + { + OT::Sanitizer<OT::SVG> sanitizer; + svg_blob = sanitizer.sanitize (face->reference_table (HB_OT_TAG_SVG)); + svg_len = hb_blob_get_length (svg_blob); + svg = svg_blob->as<OT::SVG> (); + + } + + inline void fini (void) + { + hb_blob_destroy (svg_blob); + } + + inline void + dump (void (*callback) (const uint8_t* data, unsigned int length, + unsigned int start_glyph, unsigned int end_glyph)) const + { + const SVGDocumentIndex &index = svg+svg->svgDocIndex; + const ArrayOf<SVGDocumentIndexEntry> &entries = index.entries; + for (unsigned int i = 0; i < entries.len; ++i) + { + const SVGDocumentIndexEntry &entry = entries[i]; + callback ((const uint8_t*) &entry.svgDoc (&index), entry.svgDocLength, + entry.startGlyphID, entry.endGlyphID); + } + } + + private: + hb_blob_t *svg_blob; + const SVG *svg; + + unsigned int svg_len; + }; + + protected: + HBUINT16 version; /* Table version (starting at 0). */ + LOffsetTo<SVGDocumentIndex> + svgDocIndex; /* Offset (relative to the start of the SVG table) to the + * SVG Documents Index. Must be non-zero. */ + HBUINT32 reserved; /* Set to 0. */ + public: + DEFINE_SIZE_STATIC (10); +}; + +} /* namespace OT */ + + +#endif /* HB_OT_COLOR_SVG_TABLE_HH */ |