harfbuzz/src/hb-ot-color-colr-table.hh

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/*
* 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_COLR_TABLE_HH
#define HB_OT_COLOR_COLR_TABLE_HH
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#include "hb-open-type-private.hh"
/*
* Color Palette
* http://www.microsoft.com/typography/otspec/colr.htm
*/
#define HB_OT_TAG_COLR HB_TAG('C','O','L','R')
namespace OT {
struct LayerRecord
{
friend struct COLR;
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inline bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
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return_trace (c->check_struct (this));
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}
protected:
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GlyphID glyphid; /* Glyph ID of layer glyph */
HBUINT16 colorIdx; /* Index value to use with a selected color palette */
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public:
DEFINE_SIZE_STATIC (4);
};
struct BaseGlyphRecord
{
friend struct COLR;
inline bool sanitize (hb_sanitize_context_t *c) const
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{
TRACE_SANITIZE (this);
return_trace (c->check_struct (this));
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}
protected:
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GlyphID glyphid; /* Glyph ID of reference glyph */
HBUINT16 firstLayerIdx; /* Index to the layer record */
HBUINT16 numLayers; /* Number of color layers associated with this glyph */
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public:
DEFINE_SIZE_STATIC (6);
};
struct COLR
{
static const hb_tag_t tableTag = HB_OT_TAG_COLR;
inline bool sanitize (hb_sanitize_context_t *c) const
{
TRACE_SANITIZE (this);
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return_trace (c->check_struct (this) &&
(this+baseGlyphs).sanitize (c, numBaseGlyphs) &&
(this+layers).sanitize (c, numLayers));
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}
protected:
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HBUINT16 version; /* Table version number */
HBUINT16 numBaseGlyphs; /* Number of Base Glyph Records */
LOffsetTo<UnsizedArrayOf<BaseGlyphRecord> >
baseGlyphs; /* Offset to Base Glyph records. */
LOffsetTo<UnsizedArrayOf<LayerRecord> >
layers; /* Offset to Layer Records */
HBUINT16 numLayers; /* Number of Layer Records */
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public:
DEFINE_SIZE_STATIC (14);
};
} /* namespace OT */
#endif /* HB_OT_COLOR_COLR_TABLE_HH */