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[ot-color] SVG table implementation (#874)

This commit is contained in:
Ebrahim Byagowi 2018-03-10 11:13:52 +03:30 committed by GitHub
parent 4c63c82383
commit 218fa7166e
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 114 additions and 1 deletions
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3
src/Makefile.sources
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@ -18,7 +18,6 @@ HB_BASE_sources = \
hb-open-file-private.hh \
hb-open-type-private.hh \
hb-ot-color-cbdt-table.hh \
hb-ot-color-sbix-table.hh \
hb-ot-cmap-table.hh \
hb-ot-glyf-table.hh \
hb-ot-hdmx-table.hh \
@ -100,6 +99,8 @@ HB_OT_sources = \
hb-ot-color.cc \
hb-ot-color-colr-table.hh \
hb-ot-color-cpal-table.hh \
hb-ot-color-sbix-table.hh \
hb-ot-color-svg-table.hh \
hb-ot-map.cc \
hb-ot-map-private.hh \
hb-ot-math.cc \

111
src/hb-ot-color-svg-table.hh Normal file
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@ -0,0 +1,111 @@
/*
* 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"
/*
* The SVG (Scalable Vector Graphics) table
* 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 SVGDocumentIndex;
inline bool sanitize (hb_sanitize_context_t *c, const void* base) const
{
TRACE_SANITIZE (this);
return_trace (c->check_struct (this) &&
c->check_range (&svgDoc (base), svgDocLength));
}
protected:
HBUINT16 startGlyphID;
HBUINT16 endGlyphID;
LOffsetTo<const uint8_t *> svgDoc;
HBUINT32 svgDocLength;
public:
DEFINE_SIZE_STATIC (12);
};
struct SVGDocumentIndex
{
inline bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
// dump ();
return_trace (c->check_struct (this) &&
entries.sanitize (c, this));
}
// inline void dump () const
// {
// for (unsigned int i = 0; i < entries.len; ++i)
// {
// char outName[255];
// sprintf (outName, "out/%d.svg", i);
// const SVGDocumentIndexEntry &entry = entries[i];
// FILE *f = fopen (outName, "wb");
// fwrite (&entry.svgDoc (this), 1, entry.svgDocLength, f);
// fclose (f);
// }
// }
protected:
ArrayOf<SVGDocumentIndexEntry> 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 (c->check_struct (this) &&
svgDocIndex(this).sanitize (c));
}
protected:
HBUINT16 version;
LOffsetTo<SVGDocumentIndex> svgDocIndex;
HBUINT32 reserved;
public:
DEFINE_SIZE_STATIC (10);
};
} /* namespace OT */
#endif /* HB_OT_COLOR_SVG_TABLE_HH */

1
src/hb-ot-layout.cc
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@ -40,6 +40,7 @@
#include "hb-ot-color-colr-table.hh"
#include "hb-ot-color-cpal-table.hh"
#include "hb-ot-color-sbix-table.hh" // Just so we compile it; unused otherwise.
#include "hb-ot-color-svg-table.hh" // Just so we compile it; unused otherwise.
#include "hb-ot-map-private.hh"