add harfbuzz library

2026-08-20 12:40:06 +02:00 · 2022-12-26 18:53:21 -04:00
parent 46a2cbb95d
commit 2d13144fcd
517 changed files with 177200 additions and 0 deletions
@@ -0,0 +1,126 @@
+/*
+ * 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 */