| /* |
| * 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.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 |
| { |
| int cmp (hb_codepoint_t g) const |
| { return g < startGlyphID ? -1 : g > endGlyphID ? 1 : 0; } |
| |
| hb_blob_t *reference_blob (hb_blob_t *svg_blob, unsigned int index_offset) const |
| { |
| return hb_blob_create_sub_blob (svg_blob, |
| index_offset + (unsigned int) svgDoc, |
| svgDocLength); |
| } |
| |
| bool sanitize (hb_sanitize_context_t *c, const void *base) const |
| { |
| TRACE_SANITIZE (this); |
| return_trace (c->check_struct (this) && |
| svgDoc.sanitize (c, base, 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. */ |
| NNOffset32To<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 SVG |
| { |
| static constexpr hb_tag_t tableTag = HB_OT_TAG_SVG; |
| |
| bool has_data () const { return svgDocEntries; } |
| |
| struct accelerator_t |
| { |
| accelerator_t (hb_face_t *face) |
| { table = hb_sanitize_context_t ().reference_table<SVG> (face); } |
| ~accelerator_t () { table.destroy (); } |
| |
| hb_blob_t *reference_blob_for_glyph (hb_codepoint_t glyph_id) const |
| { |
| return table->get_glyph_entry (glyph_id).reference_blob (table.get_blob (), |
| table->svgDocEntries); |
| } |
| |
| bool has_data () const { return table->has_data (); } |
| |
| private: |
| hb_blob_ptr_t<SVG> table; |
| }; |
| |
| const SVGDocumentIndexEntry &get_glyph_entry (hb_codepoint_t glyph_id) const |
| { return (this+svgDocEntries).bsearch (glyph_id); } |
| |
| bool sanitize (hb_sanitize_context_t *c) const |
| { |
| TRACE_SANITIZE (this); |
| return_trace (likely (c->check_struct (this) && |
| (this+svgDocEntries).sanitize_shallow (c))); |
| } |
| |
| protected: |
| HBUINT16 version; /* Table version (starting at 0). */ |
| Offset32To<SortedArray16Of<SVGDocumentIndexEntry>> |
| svgDocEntries; /* Offset (relative to the start of the SVG table) to the |
| * SVG Documents Index. Must be non-zero. */ |
| /* Array of SVG Document Index Entries. */ |
| HBUINT32 reserved; /* Set to 0. */ |
| public: |
| DEFINE_SIZE_STATIC (10); |
| }; |
| |
| struct SVG_accelerator_t : SVG::accelerator_t { |
| SVG_accelerator_t (hb_face_t *face) : SVG::accelerator_t (face) {} |
| }; |
| |
| } /* namespace OT */ |
| |
| |
| #endif /* HB_OT_COLOR_SVG_TABLE_HH */ |