1545 lines
48 KiB
C++
1545 lines
48 KiB
C++
/*
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* Copyright © 2018 Ebrahim Byagowi
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* Copyright © 2020 Google, Inc.
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*
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* This is part of HarfBuzz, a text shaping library.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Google Author(s): Calder Kitagawa
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*/
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#ifndef HB_OT_COLOR_COLR_TABLE_HH
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#define HB_OT_COLOR_COLR_TABLE_HH
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#include "hb-open-type.hh"
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#include "hb-ot-layout-common.hh"
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#include "hb-ot-var-common.hh"
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/*
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* COLR -- Color
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* https://docs.microsoft.com/en-us/typography/opentype/spec/colr
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*/
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#define HB_OT_TAG_COLR HB_TAG('C','O','L','R')
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#ifndef HB_COLRV1_MAX_NESTING_LEVEL
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#define HB_COLRV1_MAX_NESTING_LEVEL 100
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#endif
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#ifndef COLRV1_ENABLE_SUBSETTING
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#define COLRV1_ENABLE_SUBSETTING 1
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#endif
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namespace OT {
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struct COLR;
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struct hb_colrv1_closure_context_t :
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hb_dispatch_context_t<hb_colrv1_closure_context_t>
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{
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template <typename T>
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return_t dispatch (const T &obj)
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{
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if (unlikely (nesting_level_left == 0))
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return hb_empty_t ();
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if (paint_visited (&obj))
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return hb_empty_t ();
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nesting_level_left--;
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obj.closurev1 (this);
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nesting_level_left++;
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return hb_empty_t ();
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}
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static return_t default_return_value () { return hb_empty_t (); }
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bool paint_visited (const void *paint)
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{
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hb_codepoint_t delta = (hb_codepoint_t) ((uintptr_t) paint - (uintptr_t) base);
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if (visited_paint.in_error() || visited_paint.has (delta))
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return true;
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visited_paint.add (delta);
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return false;
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}
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const COLR* get_colr_table () const
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{ return reinterpret_cast<const COLR *> (base); }
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void add_glyph (unsigned glyph_id)
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{ glyphs->add (glyph_id); }
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void add_layer_indices (unsigned first_layer_index, unsigned num_of_layers)
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{ layer_indices->add_range (first_layer_index, first_layer_index + num_of_layers - 1); }
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void add_palette_index (unsigned palette_index)
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{ palette_indices->add (palette_index); }
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public:
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const void *base;
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hb_set_t visited_paint;
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hb_set_t *glyphs;
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hb_set_t *layer_indices;
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hb_set_t *palette_indices;
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unsigned nesting_level_left;
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hb_colrv1_closure_context_t (const void *base_,
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hb_set_t *glyphs_,
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hb_set_t *layer_indices_,
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hb_set_t *palette_indices_,
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unsigned nesting_level_left_ = HB_COLRV1_MAX_NESTING_LEVEL) :
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base (base_),
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glyphs (glyphs_),
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layer_indices (layer_indices_),
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palette_indices (palette_indices_),
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nesting_level_left (nesting_level_left_)
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{}
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};
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struct LayerRecord
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{
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operator hb_ot_color_layer_t () const { return {glyphId, colorIdx}; }
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bool sanitize (hb_sanitize_context_t *c) const
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{
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TRACE_SANITIZE (this);
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return_trace (c->check_struct (this));
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}
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public:
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HBGlyphID16 glyphId; /* Glyph ID of layer glyph */
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Index colorIdx; /* Index value to use with a
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* selected color palette.
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* An index value of 0xFFFF
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* is a special case indicating
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* that the text foreground
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* color (defined by a
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* higher-level client) should
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* be used and shall not be
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* treated as actual index
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* into CPAL ColorRecord array. */
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public:
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DEFINE_SIZE_STATIC (4);
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};
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struct BaseGlyphRecord
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{
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int cmp (hb_codepoint_t g) const
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{ return g < glyphId ? -1 : g > glyphId ? 1 : 0; }
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bool sanitize (hb_sanitize_context_t *c) const
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{
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TRACE_SANITIZE (this);
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return_trace (c->check_struct (this));
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}
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public:
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HBGlyphID16 glyphId; /* Glyph ID of reference glyph */
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HBUINT16 firstLayerIdx; /* Index (from beginning of
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* the Layer Records) to the
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* layer record. There will be
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* numLayers consecutive entries
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* for this base glyph. */
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HBUINT16 numLayers; /* Number of color layers
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* associated with this glyph */
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public:
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DEFINE_SIZE_STATIC (6);
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};
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template <typename T>
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struct Variable
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{
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Variable<T>* copy (hb_serialize_context_t *c) const
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{
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TRACE_SERIALIZE (this);
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return_trace (c->embed (this));
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}
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void closurev1 (hb_colrv1_closure_context_t* c) const
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{ value.closurev1 (c); }
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bool subset (hb_subset_context_t *c) const
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{
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TRACE_SUBSET (this);
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if (!value.subset (c)) return_trace (false);
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return_trace (c->serializer->embed (varIdxBase));
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}
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bool sanitize (hb_sanitize_context_t *c) const
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{
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TRACE_SANITIZE (this);
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return_trace (c->check_struct (this) && value.sanitize (c));
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}
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protected:
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T value;
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VarIdx varIdxBase;
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public:
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DEFINE_SIZE_STATIC (4 + T::static_size);
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};
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template <typename T>
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struct NoVariable
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{
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NoVariable<T>* copy (hb_serialize_context_t *c) const
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{
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TRACE_SERIALIZE (this);
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return_trace (c->embed (this));
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}
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void closurev1 (hb_colrv1_closure_context_t* c) const
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{ value.closurev1 (c); }
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bool subset (hb_subset_context_t *c) const
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{
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TRACE_SUBSET (this);
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return_trace (value.subset (c));
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}
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bool sanitize (hb_sanitize_context_t *c) const
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{
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TRACE_SANITIZE (this);
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return_trace (c->check_struct (this) && value.sanitize (c));
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}
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T value;
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public:
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DEFINE_SIZE_STATIC (T::static_size);
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};
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// Color structures
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struct ColorStop
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{
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void closurev1 (hb_colrv1_closure_context_t* c) const
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{ c->add_palette_index (paletteIndex); }
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bool subset (hb_subset_context_t *c) const
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{
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TRACE_SUBSET (this);
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auto *out = c->serializer->embed (*this);
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if (unlikely (!out)) return_trace (false);
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return_trace (c->serializer->check_assign (out->paletteIndex, c->plan->colr_palettes->get (paletteIndex),
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HB_SERIALIZE_ERROR_INT_OVERFLOW));
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}
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bool sanitize (hb_sanitize_context_t *c) const
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{
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TRACE_SANITIZE (this);
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return_trace (c->check_struct (this));
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}
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F2DOT14 stopOffset;
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HBUINT16 paletteIndex;
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F2DOT14 alpha;
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public:
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DEFINE_SIZE_STATIC (2 + 2 * F2DOT14::static_size);
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};
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struct Extend : HBUINT8
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{
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enum {
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EXTEND_PAD = 0,
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EXTEND_REPEAT = 1,
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EXTEND_REFLECT = 2,
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};
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public:
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DEFINE_SIZE_STATIC (1);
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};
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template <template<typename> class Var>
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struct ColorLine
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{
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void closurev1 (hb_colrv1_closure_context_t* c) const
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{
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for (const auto &stop : stops.iter ())
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stop.closurev1 (c);
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}
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bool subset (hb_subset_context_t *c) const
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{
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TRACE_SUBSET (this);
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auto *out = c->serializer->start_embed (this);
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if (unlikely (!out)) return_trace (false);
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if (unlikely (!c->serializer->extend_min (out))) return_trace (false);
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if (!c->serializer->check_assign (out->extend, extend, HB_SERIALIZE_ERROR_INT_OVERFLOW)) return_trace (false);
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if (!c->serializer->check_assign (out->stops.len, stops.len, HB_SERIALIZE_ERROR_ARRAY_OVERFLOW)) return_trace (false);
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for (const auto& stop : stops.iter ())
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{
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if (!stop.subset (c)) return_trace (false);
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}
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return_trace (true);
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}
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bool sanitize (hb_sanitize_context_t *c) const
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{
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TRACE_SANITIZE (this);
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return_trace (c->check_struct (this) &&
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stops.sanitize (c));
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}
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Extend extend;
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Array16Of<Var<ColorStop>> stops;
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public:
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DEFINE_SIZE_ARRAY_SIZED (3, stops);
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};
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// Composition modes
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// Compositing modes are taken from https://www.w3.org/TR/compositing-1/
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// NOTE: a brief audit of major implementations suggests most support most
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// or all of the specified modes.
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struct CompositeMode : HBUINT8
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{
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enum {
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// Porter-Duff modes
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// https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators
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COMPOSITE_CLEAR = 0, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_clear
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COMPOSITE_SRC = 1, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_src
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COMPOSITE_DEST = 2, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_dst
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COMPOSITE_SRC_OVER = 3, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_srcover
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COMPOSITE_DEST_OVER = 4, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_dstover
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COMPOSITE_SRC_IN = 5, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_srcin
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COMPOSITE_DEST_IN = 6, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_dstin
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COMPOSITE_SRC_OUT = 7, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_srcout
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COMPOSITE_DEST_OUT = 8, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_dstout
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COMPOSITE_SRC_ATOP = 9, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_srcatop
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COMPOSITE_DEST_ATOP = 10, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_dstatop
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COMPOSITE_XOR = 11, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_xor
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COMPOSITE_PLUS = 12, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_plus
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// Blend modes
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// https://www.w3.org/TR/compositing-1/#blending
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COMPOSITE_SCREEN = 13, // https://www.w3.org/TR/compositing-1/#blendingscreen
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COMPOSITE_OVERLAY = 14, // https://www.w3.org/TR/compositing-1/#blendingoverlay
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COMPOSITE_DARKEN = 15, // https://www.w3.org/TR/compositing-1/#blendingdarken
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COMPOSITE_LIGHTEN = 16, // https://www.w3.org/TR/compositing-1/#blendinglighten
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COMPOSITE_COLOR_DODGE = 17, // https://www.w3.org/TR/compositing-1/#blendingcolordodge
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COMPOSITE_COLOR_BURN = 18, // https://www.w3.org/TR/compositing-1/#blendingcolorburn
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COMPOSITE_HARD_LIGHT = 19, // https://www.w3.org/TR/compositing-1/#blendinghardlight
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COMPOSITE_SOFT_LIGHT = 20, // https://www.w3.org/TR/compositing-1/#blendingsoftlight
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COMPOSITE_DIFFERENCE = 21, // https://www.w3.org/TR/compositing-1/#blendingdifference
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COMPOSITE_EXCLUSION = 22, // https://www.w3.org/TR/compositing-1/#blendingexclusion
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COMPOSITE_MULTIPLY = 23, // https://www.w3.org/TR/compositing-1/#blendingmultiply
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// Modes that, uniquely, do not operate on components
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// https://www.w3.org/TR/compositing-1/#blendingnonseparable
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COMPOSITE_HSL_HUE = 24, // https://www.w3.org/TR/compositing-1/#blendinghue
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COMPOSITE_HSL_SATURATION = 25, // https://www.w3.org/TR/compositing-1/#blendingsaturation
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COMPOSITE_HSL_COLOR = 26, // https://www.w3.org/TR/compositing-1/#blendingcolor
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COMPOSITE_HSL_LUMINOSITY = 27, // https://www.w3.org/TR/compositing-1/#blendingluminosity
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};
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public:
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DEFINE_SIZE_STATIC (1);
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};
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struct Affine2x3
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{
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bool sanitize (hb_sanitize_context_t *c) const
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{
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TRACE_SANITIZE (this);
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return_trace (c->check_struct (this));
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}
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F16DOT16 xx;
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F16DOT16 yx;
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F16DOT16 xy;
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F16DOT16 yy;
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F16DOT16 dx;
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F16DOT16 dy;
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public:
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DEFINE_SIZE_STATIC (6 * F16DOT16::static_size);
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};
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struct PaintColrLayers
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{
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void closurev1 (hb_colrv1_closure_context_t* c) const;
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bool subset (hb_subset_context_t *c) const
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{
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TRACE_SUBSET (this);
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auto *out = c->serializer->embed (this);
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if (unlikely (!out)) return_trace (false);
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return_trace (c->serializer->check_assign (out->firstLayerIndex, c->plan->colrv1_layers->get (firstLayerIndex),
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HB_SERIALIZE_ERROR_INT_OVERFLOW));
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return_trace (true);
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}
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bool sanitize (hb_sanitize_context_t *c) const
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{
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TRACE_SANITIZE (this);
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return_trace (c->check_struct (this));
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}
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HBUINT8 format; /* format = 1 */
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HBUINT8 numLayers;
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HBUINT32 firstLayerIndex; /* index into COLRv1::layerList */
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public:
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DEFINE_SIZE_STATIC (6);
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};
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struct PaintSolid
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{
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void closurev1 (hb_colrv1_closure_context_t* c) const
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{ c->add_palette_index (paletteIndex); }
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bool subset (hb_subset_context_t *c) const
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{
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TRACE_SUBSET (this);
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auto *out = c->serializer->embed (*this);
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if (unlikely (!out)) return_trace (false);
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return_trace (c->serializer->check_assign (out->paletteIndex, c->plan->colr_palettes->get (paletteIndex),
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HB_SERIALIZE_ERROR_INT_OVERFLOW));
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}
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bool sanitize (hb_sanitize_context_t *c) const
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{
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TRACE_SANITIZE (this);
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return_trace (c->check_struct (this));
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}
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HBUINT8 format; /* format = 2(noVar) or 3(Var)*/
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HBUINT16 paletteIndex;
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F2DOT14 alpha;
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public:
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DEFINE_SIZE_STATIC (3 + F2DOT14::static_size);
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};
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template <template<typename> class Var>
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struct PaintLinearGradient
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{
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void closurev1 (hb_colrv1_closure_context_t* c) const
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{ (this+colorLine).closurev1 (c); }
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bool subset (hb_subset_context_t *c) const
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{
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TRACE_SUBSET (this);
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auto *out = c->serializer->embed (this);
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if (unlikely (!out)) return_trace (false);
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return_trace (out->colorLine.serialize_subset (c, colorLine, this));
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}
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bool sanitize (hb_sanitize_context_t *c) const
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{
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TRACE_SANITIZE (this);
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return_trace (c->check_struct (this) && colorLine.sanitize (c, this));
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}
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HBUINT8 format; /* format = 4(noVar) or 5 (Var) */
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Offset24To<ColorLine<Var>> colorLine; /* Offset (from beginning of PaintLinearGradient
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* table) to ColorLine subtable. */
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FWORD x0;
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FWORD y0;
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FWORD x1;
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FWORD y1;
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FWORD x2;
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FWORD y2;
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public:
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DEFINE_SIZE_STATIC (4 + 6 * FWORD::static_size);
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};
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template <template<typename> class Var>
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struct PaintRadialGradient
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{
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void closurev1 (hb_colrv1_closure_context_t* c) const
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{ (this+colorLine).closurev1 (c); }
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bool subset (hb_subset_context_t *c) const
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{
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TRACE_SUBSET (this);
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auto *out = c->serializer->embed (this);
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if (unlikely (!out)) return_trace (false);
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return_trace (out->colorLine.serialize_subset (c, colorLine, this));
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}
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bool sanitize (hb_sanitize_context_t *c) const
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{
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TRACE_SANITIZE (this);
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return_trace (c->check_struct (this) && colorLine.sanitize (c, this));
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|
}
|
|
|
|
HBUINT8 format; /* format = 6(noVar) or 7 (Var) */
|
|
Offset24To<ColorLine<Var>> colorLine; /* Offset (from beginning of PaintRadialGradient
|
|
* table) to ColorLine subtable. */
|
|
FWORD x0;
|
|
FWORD y0;
|
|
UFWORD radius0;
|
|
FWORD x1;
|
|
FWORD y1;
|
|
UFWORD radius1;
|
|
public:
|
|
DEFINE_SIZE_STATIC (4 + 6 * FWORD::static_size);
|
|
};
|
|
|
|
template <template<typename> class Var>
|
|
struct PaintSweepGradient
|
|
{
|
|
void closurev1 (hb_colrv1_closure_context_t* c) const
|
|
{ (this+colorLine).closurev1 (c); }
|
|
|
|
bool subset (hb_subset_context_t *c) const
|
|
{
|
|
TRACE_SUBSET (this);
|
|
auto *out = c->serializer->embed (this);
|
|
if (unlikely (!out)) return_trace (false);
|
|
|
|
return_trace (out->colorLine.serialize_subset (c, colorLine, this));
|
|
}
|
|
|
|
bool sanitize (hb_sanitize_context_t *c) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
return_trace (c->check_struct (this) && colorLine.sanitize (c, this));
|
|
}
|
|
|
|
HBUINT8 format; /* format = 8(noVar) or 9 (Var) */
|
|
Offset24To<ColorLine<Var>> colorLine; /* Offset (from beginning of PaintSweepGradient
|
|
* table) to ColorLine subtable. */
|
|
FWORD centerX;
|
|
FWORD centerY;
|
|
F2DOT14 startAngle;
|
|
F2DOT14 endAngle;
|
|
public:
|
|
DEFINE_SIZE_STATIC (4 + 2 * FWORD::static_size + 2 * F2DOT14::static_size);
|
|
};
|
|
|
|
struct Paint;
|
|
|
|
// Paint a non-COLR glyph, filled as indicated by paint.
|
|
struct PaintGlyph
|
|
{
|
|
void closurev1 (hb_colrv1_closure_context_t* c) const;
|
|
|
|
bool subset (hb_subset_context_t *c) const
|
|
{
|
|
TRACE_SUBSET (this);
|
|
auto *out = c->serializer->embed (this);
|
|
if (unlikely (!out)) return_trace (false);
|
|
|
|
if (! c->serializer->check_assign (out->gid, c->plan->glyph_map->get (gid),
|
|
HB_SERIALIZE_ERROR_INT_OVERFLOW))
|
|
return_trace (false);
|
|
|
|
return_trace (out->paint.serialize_subset (c, paint, this));
|
|
}
|
|
|
|
bool sanitize (hb_sanitize_context_t *c) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
return_trace (c->check_struct (this) && paint.sanitize (c, this));
|
|
}
|
|
|
|
HBUINT8 format; /* format = 10 */
|
|
Offset24To<Paint> paint; /* Offset (from beginning of PaintGlyph table) to Paint subtable. */
|
|
HBUINT16 gid;
|
|
public:
|
|
DEFINE_SIZE_STATIC (6);
|
|
};
|
|
|
|
struct PaintColrGlyph
|
|
{
|
|
void closurev1 (hb_colrv1_closure_context_t* c) const;
|
|
|
|
bool subset (hb_subset_context_t *c) const
|
|
{
|
|
TRACE_SUBSET (this);
|
|
auto *out = c->serializer->embed (this);
|
|
if (unlikely (!out)) return_trace (false);
|
|
|
|
return_trace (c->serializer->check_assign (out->gid, c->plan->glyph_map->get (gid),
|
|
HB_SERIALIZE_ERROR_INT_OVERFLOW));
|
|
}
|
|
|
|
bool sanitize (hb_sanitize_context_t *c) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
return_trace (c->check_struct (this));
|
|
}
|
|
|
|
HBUINT8 format; /* format = 11 */
|
|
HBUINT16 gid;
|
|
public:
|
|
DEFINE_SIZE_STATIC (3);
|
|
};
|
|
|
|
template <template<typename> class Var>
|
|
struct PaintTransform
|
|
{
|
|
HB_INTERNAL void closurev1 (hb_colrv1_closure_context_t* c) const;
|
|
|
|
bool subset (hb_subset_context_t *c) const
|
|
{
|
|
TRACE_SUBSET (this);
|
|
auto *out = c->serializer->embed (this);
|
|
if (unlikely (!out)) return_trace (false);
|
|
if (!out->transform.serialize_copy (c->serializer, transform, this)) return_trace (false);
|
|
return_trace (out->src.serialize_subset (c, src, this));
|
|
}
|
|
|
|
bool sanitize (hb_sanitize_context_t *c) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
return_trace (c->check_struct (this) &&
|
|
src.sanitize (c, this) &&
|
|
transform.sanitize (c, this));
|
|
}
|
|
|
|
HBUINT8 format; /* format = 12(noVar) or 13 (Var) */
|
|
Offset24To<Paint> src; /* Offset (from beginning of PaintTransform table) to Paint subtable. */
|
|
Offset24To<Var<Affine2x3>> transform;
|
|
public:
|
|
DEFINE_SIZE_STATIC (7);
|
|
};
|
|
|
|
struct PaintTranslate
|
|
{
|
|
HB_INTERNAL void closurev1 (hb_colrv1_closure_context_t* c) const;
|
|
|
|
bool subset (hb_subset_context_t *c) const
|
|
{
|
|
TRACE_SUBSET (this);
|
|
auto *out = c->serializer->embed (this);
|
|
if (unlikely (!out)) return_trace (false);
|
|
|
|
return_trace (out->src.serialize_subset (c, src, this));
|
|
}
|
|
|
|
bool sanitize (hb_sanitize_context_t *c) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
return_trace (c->check_struct (this) && src.sanitize (c, this));
|
|
}
|
|
|
|
HBUINT8 format; /* format = 14(noVar) or 15 (Var) */
|
|
Offset24To<Paint> src; /* Offset (from beginning of PaintTranslate table) to Paint subtable. */
|
|
FWORD dx;
|
|
FWORD dy;
|
|
public:
|
|
DEFINE_SIZE_STATIC (4 + 2 * FWORD::static_size);
|
|
};
|
|
|
|
struct PaintScale
|
|
{
|
|
HB_INTERNAL void closurev1 (hb_colrv1_closure_context_t* c) const;
|
|
|
|
bool subset (hb_subset_context_t *c) const
|
|
{
|
|
TRACE_SUBSET (this);
|
|
auto *out = c->serializer->embed (this);
|
|
if (unlikely (!out)) return_trace (false);
|
|
|
|
return_trace (out->src.serialize_subset (c, src, this));
|
|
}
|
|
|
|
bool sanitize (hb_sanitize_context_t *c) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
return_trace (c->check_struct (this) && src.sanitize (c, this));
|
|
}
|
|
|
|
HBUINT8 format; /* format = 16 (noVar) or 17(Var) */
|
|
Offset24To<Paint> src; /* Offset (from beginning of PaintScale table) to Paint subtable. */
|
|
F2DOT14 scaleX;
|
|
F2DOT14 scaleY;
|
|
public:
|
|
DEFINE_SIZE_STATIC (4 + 2 * F2DOT14::static_size);
|
|
};
|
|
|
|
struct PaintScaleAroundCenter
|
|
{
|
|
HB_INTERNAL void closurev1 (hb_colrv1_closure_context_t* c) const;
|
|
|
|
bool subset (hb_subset_context_t *c) const
|
|
{
|
|
TRACE_SUBSET (this);
|
|
auto *out = c->serializer->embed (this);
|
|
if (unlikely (!out)) return_trace (false);
|
|
|
|
return_trace (out->src.serialize_subset (c, src, this));
|
|
}
|
|
|
|
bool sanitize (hb_sanitize_context_t *c) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
return_trace (c->check_struct (this) && src.sanitize (c, this));
|
|
}
|
|
|
|
HBUINT8 format; /* format = 18 (noVar) or 19(Var) */
|
|
Offset24To<Paint> src; /* Offset (from beginning of PaintScaleAroundCenter table) to Paint subtable. */
|
|
F2DOT14 scaleX;
|
|
F2DOT14 scaleY;
|
|
FWORD centerX;
|
|
FWORD centerY;
|
|
public:
|
|
DEFINE_SIZE_STATIC (4 + 2 * F2DOT14::static_size + 2 * FWORD::static_size);
|
|
};
|
|
|
|
struct PaintScaleUniform
|
|
{
|
|
HB_INTERNAL void closurev1 (hb_colrv1_closure_context_t* c) const;
|
|
|
|
bool subset (hb_subset_context_t *c) const
|
|
{
|
|
TRACE_SUBSET (this);
|
|
auto *out = c->serializer->embed (this);
|
|
if (unlikely (!out)) return_trace (false);
|
|
|
|
return_trace (out->src.serialize_subset (c, src, this));
|
|
}
|
|
|
|
bool sanitize (hb_sanitize_context_t *c) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
return_trace (c->check_struct (this) && src.sanitize (c, this));
|
|
}
|
|
|
|
HBUINT8 format; /* format = 20 (noVar) or 21(Var) */
|
|
Offset24To<Paint> src; /* Offset (from beginning of PaintScaleUniform table) to Paint subtable. */
|
|
F2DOT14 scale;
|
|
public:
|
|
DEFINE_SIZE_STATIC (4 + F2DOT14::static_size);
|
|
};
|
|
|
|
struct PaintScaleUniformAroundCenter
|
|
{
|
|
HB_INTERNAL void closurev1 (hb_colrv1_closure_context_t* c) const;
|
|
|
|
bool subset (hb_subset_context_t *c) const
|
|
{
|
|
TRACE_SUBSET (this);
|
|
auto *out = c->serializer->embed (this);
|
|
if (unlikely (!out)) return_trace (false);
|
|
|
|
return_trace (out->src.serialize_subset (c, src, this));
|
|
}
|
|
|
|
bool sanitize (hb_sanitize_context_t *c) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
return_trace (c->check_struct (this) && src.sanitize (c, this));
|
|
}
|
|
|
|
HBUINT8 format; /* format = 22 (noVar) or 23(Var) */
|
|
Offset24To<Paint> src; /* Offset (from beginning of PaintScaleUniformAroundCenter table) to Paint subtable. */
|
|
F2DOT14 scale;
|
|
FWORD centerX;
|
|
FWORD centerY;
|
|
public:
|
|
DEFINE_SIZE_STATIC (4 + F2DOT14::static_size + 2 * FWORD::static_size);
|
|
};
|
|
|
|
struct PaintRotate
|
|
{
|
|
HB_INTERNAL void closurev1 (hb_colrv1_closure_context_t* c) const;
|
|
|
|
bool subset (hb_subset_context_t *c) const
|
|
{
|
|
TRACE_SUBSET (this);
|
|
auto *out = c->serializer->embed (this);
|
|
if (unlikely (!out)) return_trace (false);
|
|
|
|
return_trace (out->src.serialize_subset (c, src, this));
|
|
}
|
|
|
|
bool sanitize (hb_sanitize_context_t *c) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
return_trace (c->check_struct (this) && src.sanitize (c, this));
|
|
}
|
|
|
|
HBUINT8 format; /* format = 24 (noVar) or 25(Var) */
|
|
Offset24To<Paint> src; /* Offset (from beginning of PaintRotate table) to Paint subtable. */
|
|
F2DOT14 angle;
|
|
public:
|
|
DEFINE_SIZE_STATIC (4 + F2DOT14::static_size);
|
|
};
|
|
|
|
struct PaintRotateAroundCenter
|
|
{
|
|
HB_INTERNAL void closurev1 (hb_colrv1_closure_context_t* c) const;
|
|
|
|
bool subset (hb_subset_context_t *c) const
|
|
{
|
|
TRACE_SUBSET (this);
|
|
auto *out = c->serializer->embed (this);
|
|
if (unlikely (!out)) return_trace (false);
|
|
|
|
return_trace (out->src.serialize_subset (c, src, this));
|
|
}
|
|
|
|
bool sanitize (hb_sanitize_context_t *c) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
return_trace (c->check_struct (this) && src.sanitize (c, this));
|
|
}
|
|
|
|
HBUINT8 format; /* format = 26 (noVar) or 27(Var) */
|
|
Offset24To<Paint> src; /* Offset (from beginning of PaintRotateAroundCenter table) to Paint subtable. */
|
|
F2DOT14 angle;
|
|
FWORD centerX;
|
|
FWORD centerY;
|
|
public:
|
|
DEFINE_SIZE_STATIC (4 + F2DOT14::static_size + 2 * FWORD::static_size);
|
|
};
|
|
|
|
struct PaintSkew
|
|
{
|
|
HB_INTERNAL void closurev1 (hb_colrv1_closure_context_t* c) const;
|
|
|
|
bool subset (hb_subset_context_t *c) const
|
|
{
|
|
TRACE_SUBSET (this);
|
|
auto *out = c->serializer->embed (this);
|
|
if (unlikely (!out)) return_trace (false);
|
|
|
|
return_trace (out->src.serialize_subset (c, src, this));
|
|
}
|
|
|
|
bool sanitize (hb_sanitize_context_t *c) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
return_trace (c->check_struct (this) && src.sanitize (c, this));
|
|
}
|
|
|
|
HBUINT8 format; /* format = 28(noVar) or 29 (Var) */
|
|
Offset24To<Paint> src; /* Offset (from beginning of PaintSkew table) to Paint subtable. */
|
|
F2DOT14 xSkewAngle;
|
|
F2DOT14 ySkewAngle;
|
|
public:
|
|
DEFINE_SIZE_STATIC (4 + 2 * F2DOT14::static_size);
|
|
};
|
|
|
|
struct PaintSkewAroundCenter
|
|
{
|
|
HB_INTERNAL void closurev1 (hb_colrv1_closure_context_t* c) const;
|
|
|
|
bool subset (hb_subset_context_t *c) const
|
|
{
|
|
TRACE_SUBSET (this);
|
|
auto *out = c->serializer->embed (this);
|
|
if (unlikely (!out)) return_trace (false);
|
|
|
|
return_trace (out->src.serialize_subset (c, src, this));
|
|
}
|
|
|
|
bool sanitize (hb_sanitize_context_t *c) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
return_trace (c->check_struct (this) && src.sanitize (c, this));
|
|
}
|
|
|
|
HBUINT8 format; /* format = 30(noVar) or 31 (Var) */
|
|
Offset24To<Paint> src; /* Offset (from beginning of PaintSkewAroundCenter table) to Paint subtable. */
|
|
F2DOT14 xSkewAngle;
|
|
F2DOT14 ySkewAngle;
|
|
FWORD centerX;
|
|
FWORD centerY;
|
|
public:
|
|
DEFINE_SIZE_STATIC (4 + 2 * F2DOT14::static_size + 2 * FWORD::static_size);
|
|
};
|
|
|
|
struct PaintComposite
|
|
{
|
|
void closurev1 (hb_colrv1_closure_context_t* c) const;
|
|
|
|
bool subset (hb_subset_context_t *c) const
|
|
{
|
|
TRACE_SUBSET (this);
|
|
auto *out = c->serializer->embed (this);
|
|
if (unlikely (!out)) return_trace (false);
|
|
|
|
if (!out->src.serialize_subset (c, src, this)) return_trace (false);
|
|
return_trace (out->backdrop.serialize_subset (c, backdrop, this));
|
|
}
|
|
|
|
bool sanitize (hb_sanitize_context_t *c) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
return_trace (c->check_struct (this) &&
|
|
src.sanitize (c, this) &&
|
|
backdrop.sanitize (c, this));
|
|
}
|
|
|
|
HBUINT8 format; /* format = 32 */
|
|
Offset24To<Paint> src; /* Offset (from beginning of PaintComposite table) to source Paint subtable. */
|
|
CompositeMode mode; /* If mode is unrecognized use COMPOSITE_CLEAR */
|
|
Offset24To<Paint> backdrop; /* Offset (from beginning of PaintComposite table) to backdrop Paint subtable. */
|
|
public:
|
|
DEFINE_SIZE_STATIC (8);
|
|
};
|
|
|
|
struct ClipBoxFormat1
|
|
{
|
|
bool sanitize (hb_sanitize_context_t *c) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
return_trace (c->check_struct (this));
|
|
}
|
|
|
|
public:
|
|
HBUINT8 format; /* format = 1(noVar) or 2(Var)*/
|
|
FWORD xMin;
|
|
FWORD yMin;
|
|
FWORD xMax;
|
|
FWORD yMax;
|
|
public:
|
|
DEFINE_SIZE_STATIC (1 + 4 * FWORD::static_size);
|
|
};
|
|
|
|
struct ClipBoxFormat2 : Variable<ClipBoxFormat1> {};
|
|
|
|
struct ClipBox
|
|
{
|
|
ClipBox* copy (hb_serialize_context_t *c) const
|
|
{
|
|
TRACE_SERIALIZE (this);
|
|
switch (u.format) {
|
|
case 1: return_trace (reinterpret_cast<ClipBox *> (c->embed (u.format1)));
|
|
case 2: return_trace (reinterpret_cast<ClipBox *> (c->embed (u.format2)));
|
|
default:return_trace (nullptr);
|
|
}
|
|
}
|
|
|
|
template <typename context_t, typename ...Ts>
|
|
typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const
|
|
{
|
|
TRACE_DISPATCH (this, u.format);
|
|
if (unlikely (!c->may_dispatch (this, &u.format))) return_trace (c->no_dispatch_return_value ());
|
|
switch (u.format) {
|
|
case 1: return_trace (c->dispatch (u.format1, std::forward<Ts> (ds)...));
|
|
case 2: return_trace (c->dispatch (u.format2, std::forward<Ts> (ds)...));
|
|
default:return_trace (c->default_return_value ());
|
|
}
|
|
}
|
|
|
|
protected:
|
|
union {
|
|
HBUINT8 format; /* Format identifier */
|
|
ClipBoxFormat1 format1;
|
|
ClipBoxFormat2 format2;
|
|
} u;
|
|
};
|
|
|
|
struct ClipRecord
|
|
{
|
|
ClipRecord* copy (hb_serialize_context_t *c, const void *base) const
|
|
{
|
|
TRACE_SERIALIZE (this);
|
|
auto *out = c->embed (this);
|
|
if (unlikely (!out)) return_trace (nullptr);
|
|
if (!out->clipBox.serialize_copy (c, clipBox, base)) return_trace (nullptr);
|
|
return_trace (out);
|
|
}
|
|
|
|
bool sanitize (hb_sanitize_context_t *c, const void *base) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
return_trace (c->check_struct (this) && clipBox.sanitize (c, base));
|
|
}
|
|
|
|
public:
|
|
HBUINT16 startGlyphID; // first gid clip applies to
|
|
HBUINT16 endGlyphID; // last gid clip applies to, inclusive
|
|
Offset24To<ClipBox> clipBox; // Box or VarBox
|
|
public:
|
|
DEFINE_SIZE_STATIC (7);
|
|
};
|
|
|
|
struct ClipList
|
|
{
|
|
unsigned serialize_clip_records (hb_serialize_context_t *c,
|
|
const hb_set_t& gids,
|
|
const hb_map_t& gid_offset_map) const
|
|
{
|
|
TRACE_SERIALIZE (this);
|
|
if (gids.is_empty () ||
|
|
gid_offset_map.get_population () != gids.get_population ())
|
|
return_trace (0);
|
|
|
|
unsigned count = 0;
|
|
|
|
hb_codepoint_t start_gid= gids.get_min ();
|
|
hb_codepoint_t prev_gid = start_gid;
|
|
|
|
unsigned offset = gid_offset_map.get (start_gid);
|
|
unsigned prev_offset = offset;
|
|
for (const hb_codepoint_t _ : gids.iter ())
|
|
{
|
|
if (_ == start_gid) continue;
|
|
|
|
offset = gid_offset_map.get (_);
|
|
if (_ == prev_gid + 1 && offset == prev_offset)
|
|
{
|
|
prev_gid = _;
|
|
continue;
|
|
}
|
|
|
|
ClipRecord record;
|
|
record.startGlyphID = start_gid;
|
|
record.endGlyphID = prev_gid;
|
|
record.clipBox = prev_offset;
|
|
|
|
if (!c->copy (record, this)) return_trace (0);
|
|
count++;
|
|
|
|
start_gid = _;
|
|
prev_gid = _;
|
|
prev_offset = offset;
|
|
}
|
|
|
|
//last one
|
|
{
|
|
ClipRecord record;
|
|
record.startGlyphID = start_gid;
|
|
record.endGlyphID = prev_gid;
|
|
record.clipBox = prev_offset;
|
|
if (!c->copy (record, this)) return_trace (0);
|
|
count++;
|
|
}
|
|
return_trace (count);
|
|
}
|
|
|
|
bool subset (hb_subset_context_t *c) const
|
|
{
|
|
TRACE_SUBSET (this);
|
|
auto *out = c->serializer->start_embed (*this);
|
|
if (unlikely (!c->serializer->extend_min (out))) return_trace (false);
|
|
if (!c->serializer->check_assign (out->format, format, HB_SERIALIZE_ERROR_INT_OVERFLOW)) return_trace (false);
|
|
|
|
const hb_set_t& glyphset = *c->plan->_glyphset_colred;
|
|
const hb_map_t &glyph_map = *c->plan->glyph_map;
|
|
|
|
hb_map_t new_gid_offset_map;
|
|
hb_set_t new_gids;
|
|
for (const ClipRecord& record : clips.iter ())
|
|
{
|
|
unsigned start_gid = record.startGlyphID;
|
|
unsigned end_gid = record.endGlyphID;
|
|
for (unsigned gid = start_gid; gid <= end_gid; gid++)
|
|
{
|
|
if (!glyphset.has (gid) || !glyph_map.has (gid)) continue;
|
|
unsigned new_gid = glyph_map.get (gid);
|
|
new_gid_offset_map.set (new_gid, record.clipBox);
|
|
new_gids.add (new_gid);
|
|
}
|
|
}
|
|
|
|
unsigned count = serialize_clip_records (c->serializer, new_gids, new_gid_offset_map);
|
|
if (!count) return_trace (false);
|
|
return_trace (c->serializer->check_assign (out->clips.len, count, HB_SERIALIZE_ERROR_INT_OVERFLOW));
|
|
}
|
|
|
|
bool sanitize (hb_sanitize_context_t *c) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
return_trace (c->check_struct (this) && clips.sanitize (c, this));
|
|
}
|
|
|
|
HBUINT8 format; // Set to 1.
|
|
Array32Of<ClipRecord> clips; // Clip records, sorted by startGlyphID
|
|
public:
|
|
DEFINE_SIZE_ARRAY_SIZED (5, clips);
|
|
};
|
|
|
|
struct Paint
|
|
{
|
|
|
|
template <typename ...Ts>
|
|
bool sanitize (hb_sanitize_context_t *c, Ts&&... ds) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
|
|
if (unlikely (!c->check_start_recursion (HB_COLRV1_MAX_NESTING_LEVEL)))
|
|
return_trace (c->no_dispatch_return_value ());
|
|
|
|
return_trace (c->end_recursion (this->dispatch (c, std::forward<Ts> (ds)...)));
|
|
}
|
|
|
|
template <typename context_t, typename ...Ts>
|
|
typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const
|
|
{
|
|
TRACE_DISPATCH (this, u.format);
|
|
if (unlikely (!c->may_dispatch (this, &u.format))) return_trace (c->no_dispatch_return_value ());
|
|
switch (u.format) {
|
|
case 1: return_trace (c->dispatch (u.paintformat1, std::forward<Ts> (ds)...));
|
|
case 2: return_trace (c->dispatch (u.paintformat2, std::forward<Ts> (ds)...));
|
|
case 3: return_trace (c->dispatch (u.paintformat3, std::forward<Ts> (ds)...));
|
|
case 4: return_trace (c->dispatch (u.paintformat4, std::forward<Ts> (ds)...));
|
|
case 5: return_trace (c->dispatch (u.paintformat5, std::forward<Ts> (ds)...));
|
|
case 6: return_trace (c->dispatch (u.paintformat6, std::forward<Ts> (ds)...));
|
|
case 7: return_trace (c->dispatch (u.paintformat7, std::forward<Ts> (ds)...));
|
|
case 8: return_trace (c->dispatch (u.paintformat8, std::forward<Ts> (ds)...));
|
|
case 9: return_trace (c->dispatch (u.paintformat9, std::forward<Ts> (ds)...));
|
|
case 10: return_trace (c->dispatch (u.paintformat10, std::forward<Ts> (ds)...));
|
|
case 11: return_trace (c->dispatch (u.paintformat11, std::forward<Ts> (ds)...));
|
|
case 12: return_trace (c->dispatch (u.paintformat12, std::forward<Ts> (ds)...));
|
|
case 13: return_trace (c->dispatch (u.paintformat13, std::forward<Ts> (ds)...));
|
|
case 14: return_trace (c->dispatch (u.paintformat14, std::forward<Ts> (ds)...));
|
|
case 15: return_trace (c->dispatch (u.paintformat15, std::forward<Ts> (ds)...));
|
|
case 16: return_trace (c->dispatch (u.paintformat16, std::forward<Ts> (ds)...));
|
|
case 17: return_trace (c->dispatch (u.paintformat17, std::forward<Ts> (ds)...));
|
|
case 18: return_trace (c->dispatch (u.paintformat18, std::forward<Ts> (ds)...));
|
|
case 19: return_trace (c->dispatch (u.paintformat19, std::forward<Ts> (ds)...));
|
|
case 20: return_trace (c->dispatch (u.paintformat20, std::forward<Ts> (ds)...));
|
|
case 21: return_trace (c->dispatch (u.paintformat21, std::forward<Ts> (ds)...));
|
|
case 22: return_trace (c->dispatch (u.paintformat22, std::forward<Ts> (ds)...));
|
|
case 23: return_trace (c->dispatch (u.paintformat23, std::forward<Ts> (ds)...));
|
|
case 24: return_trace (c->dispatch (u.paintformat24, std::forward<Ts> (ds)...));
|
|
case 25: return_trace (c->dispatch (u.paintformat25, std::forward<Ts> (ds)...));
|
|
case 26: return_trace (c->dispatch (u.paintformat26, std::forward<Ts> (ds)...));
|
|
case 27: return_trace (c->dispatch (u.paintformat27, std::forward<Ts> (ds)...));
|
|
case 28: return_trace (c->dispatch (u.paintformat28, std::forward<Ts> (ds)...));
|
|
case 29: return_trace (c->dispatch (u.paintformat29, std::forward<Ts> (ds)...));
|
|
case 30: return_trace (c->dispatch (u.paintformat30, std::forward<Ts> (ds)...));
|
|
case 31: return_trace (c->dispatch (u.paintformat31, std::forward<Ts> (ds)...));
|
|
case 32: return_trace (c->dispatch (u.paintformat32, std::forward<Ts> (ds)...));
|
|
default:return_trace (c->default_return_value ());
|
|
}
|
|
}
|
|
|
|
protected:
|
|
union {
|
|
HBUINT8 format;
|
|
PaintColrLayers paintformat1;
|
|
PaintSolid paintformat2;
|
|
Variable<PaintSolid> paintformat3;
|
|
PaintLinearGradient<NoVariable> paintformat4;
|
|
Variable<PaintLinearGradient<Variable>> paintformat5;
|
|
PaintRadialGradient<NoVariable> paintformat6;
|
|
Variable<PaintRadialGradient<Variable>> paintformat7;
|
|
PaintSweepGradient<NoVariable> paintformat8;
|
|
Variable<PaintSweepGradient<Variable>> paintformat9;
|
|
PaintGlyph paintformat10;
|
|
PaintColrGlyph paintformat11;
|
|
PaintTransform<NoVariable> paintformat12;
|
|
PaintTransform<Variable> paintformat13;
|
|
PaintTranslate paintformat14;
|
|
Variable<PaintTranslate> paintformat15;
|
|
PaintScale paintformat16;
|
|
Variable<PaintScale> paintformat17;
|
|
PaintScaleAroundCenter paintformat18;
|
|
Variable<PaintScaleAroundCenter> paintformat19;
|
|
PaintScaleUniform paintformat20;
|
|
Variable<PaintScaleUniform> paintformat21;
|
|
PaintScaleUniformAroundCenter paintformat22;
|
|
Variable<PaintScaleUniformAroundCenter> paintformat23;
|
|
PaintRotate paintformat24;
|
|
Variable<PaintRotate> paintformat25;
|
|
PaintRotateAroundCenter paintformat26;
|
|
Variable<PaintRotateAroundCenter> paintformat27;
|
|
PaintSkew paintformat28;
|
|
Variable<PaintSkew> paintformat29;
|
|
PaintSkewAroundCenter paintformat30;
|
|
Variable<PaintSkewAroundCenter> paintformat31;
|
|
PaintComposite paintformat32;
|
|
} u;
|
|
public:
|
|
DEFINE_SIZE_MIN (2);
|
|
};
|
|
|
|
struct BaseGlyphPaintRecord
|
|
{
|
|
int cmp (hb_codepoint_t g) const
|
|
{ return g < glyphId ? -1 : g > glyphId ? 1 : 0; }
|
|
|
|
bool serialize (hb_serialize_context_t *s, const hb_map_t* glyph_map,
|
|
const void* src_base, hb_subset_context_t *c) const
|
|
{
|
|
TRACE_SERIALIZE (this);
|
|
auto *out = s->embed (this);
|
|
if (unlikely (!out)) return_trace (false);
|
|
if (!s->check_assign (out->glyphId, glyph_map->get (glyphId),
|
|
HB_SERIALIZE_ERROR_INT_OVERFLOW))
|
|
return_trace (false);
|
|
|
|
return_trace (out->paint.serialize_subset (c, paint, src_base));
|
|
}
|
|
|
|
bool sanitize (hb_sanitize_context_t *c, const void *base) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
return_trace (likely (c->check_struct (this) && paint.sanitize (c, base)));
|
|
}
|
|
|
|
public:
|
|
HBGlyphID16 glyphId; /* Glyph ID of reference glyph */
|
|
Offset32To<Paint> paint; /* Offset (from beginning of BaseGlyphPaintRecord array) to Paint,
|
|
* Typically PaintColrLayers */
|
|
public:
|
|
DEFINE_SIZE_STATIC (6);
|
|
};
|
|
|
|
struct BaseGlyphList : SortedArray32Of<BaseGlyphPaintRecord>
|
|
{
|
|
bool subset (hb_subset_context_t *c) const
|
|
{
|
|
TRACE_SUBSET (this);
|
|
auto *out = c->serializer->start_embed (this);
|
|
if (unlikely (!c->serializer->extend_min (out))) return_trace (false);
|
|
const hb_set_t* glyphset = c->plan->_glyphset_colred;
|
|
|
|
for (const auto& _ : as_array ())
|
|
{
|
|
unsigned gid = _.glyphId;
|
|
if (!glyphset->has (gid)) continue;
|
|
|
|
if (_.serialize (c->serializer, c->plan->glyph_map, this, c)) out->len++;
|
|
else return_trace (false);
|
|
}
|
|
|
|
return_trace (out->len != 0);
|
|
}
|
|
|
|
bool sanitize (hb_sanitize_context_t *c) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
return_trace (SortedArray32Of<BaseGlyphPaintRecord>::sanitize (c, this));
|
|
}
|
|
};
|
|
|
|
struct LayerList : Array32OfOffset32To<Paint>
|
|
{
|
|
const Paint& get_paint (unsigned i) const
|
|
{ return this+(*this)[i]; }
|
|
|
|
bool subset (hb_subset_context_t *c) const
|
|
{
|
|
TRACE_SUBSET (this);
|
|
auto *out = c->serializer->start_embed (this);
|
|
if (unlikely (!c->serializer->extend_min (out))) return_trace (false);
|
|
|
|
for (const auto& _ : + hb_enumerate (*this)
|
|
| hb_filter (c->plan->colrv1_layers, hb_first))
|
|
|
|
{
|
|
auto *o = out->serialize_append (c->serializer);
|
|
if (unlikely (!o) || !o->serialize_subset (c, _.second, this))
|
|
return_trace (false);
|
|
}
|
|
return_trace (true);
|
|
}
|
|
|
|
bool sanitize (hb_sanitize_context_t *c) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
return_trace (Array32OfOffset32To<Paint>::sanitize (c, this));
|
|
}
|
|
};
|
|
|
|
struct COLR
|
|
{
|
|
static constexpr hb_tag_t tableTag = HB_OT_TAG_COLR;
|
|
|
|
bool has_data () const { return numBaseGlyphs; }
|
|
|
|
unsigned int get_glyph_layers (hb_codepoint_t glyph,
|
|
unsigned int start_offset,
|
|
unsigned int *count, /* IN/OUT. May be NULL. */
|
|
hb_ot_color_layer_t *layers /* OUT. May be NULL. */) const
|
|
{
|
|
const BaseGlyphRecord &record = (this+baseGlyphsZ).bsearch (numBaseGlyphs, glyph);
|
|
|
|
hb_array_t<const LayerRecord> all_layers = (this+layersZ).as_array (numLayers);
|
|
hb_array_t<const LayerRecord> glyph_layers = all_layers.sub_array (record.firstLayerIdx,
|
|
record.numLayers);
|
|
if (count)
|
|
{
|
|
+ glyph_layers.sub_array (start_offset, count)
|
|
| hb_sink (hb_array (layers, *count))
|
|
;
|
|
}
|
|
return glyph_layers.length;
|
|
}
|
|
|
|
struct accelerator_t
|
|
{
|
|
accelerator_t (hb_face_t *face)
|
|
{ colr = hb_sanitize_context_t ().reference_table<COLR> (face); }
|
|
~accelerator_t () { this->colr.destroy (); }
|
|
|
|
bool is_valid () { return colr.get_blob ()->length; }
|
|
|
|
void closure_glyphs (hb_codepoint_t glyph,
|
|
hb_set_t *related_ids /* OUT */) const
|
|
{ colr->closure_glyphs (glyph, related_ids); }
|
|
|
|
void closure_V0palette_indices (const hb_set_t *glyphs,
|
|
hb_set_t *palettes /* OUT */) const
|
|
{ colr->closure_V0palette_indices (glyphs, palettes); }
|
|
|
|
void closure_forV1 (hb_set_t *glyphset,
|
|
hb_set_t *layer_indices,
|
|
hb_set_t *palette_indices) const
|
|
{ colr->closure_forV1 (glyphset, layer_indices, palette_indices); }
|
|
|
|
private:
|
|
hb_blob_ptr_t<COLR> colr;
|
|
};
|
|
|
|
void closure_glyphs (hb_codepoint_t glyph,
|
|
hb_set_t *related_ids /* OUT */) const
|
|
{
|
|
const BaseGlyphRecord *record = get_base_glyph_record (glyph);
|
|
if (!record) return;
|
|
|
|
auto glyph_layers = (this+layersZ).as_array (numLayers).sub_array (record->firstLayerIdx,
|
|
record->numLayers);
|
|
if (!glyph_layers.length) return;
|
|
related_ids->add_array (&glyph_layers[0].glyphId, glyph_layers.length, LayerRecord::min_size);
|
|
}
|
|
|
|
void closure_V0palette_indices (const hb_set_t *glyphs,
|
|
hb_set_t *palettes /* OUT */) const
|
|
{
|
|
if (!numBaseGlyphs || !numLayers) return;
|
|
hb_array_t<const BaseGlyphRecord> baseGlyphs = (this+baseGlyphsZ).as_array (numBaseGlyphs);
|
|
hb_array_t<const LayerRecord> all_layers = (this+layersZ).as_array (numLayers);
|
|
|
|
for (const BaseGlyphRecord record : baseGlyphs)
|
|
{
|
|
if (!glyphs->has (record.glyphId)) continue;
|
|
hb_array_t<const LayerRecord> glyph_layers = all_layers.sub_array (record.firstLayerIdx,
|
|
record.numLayers);
|
|
for (const LayerRecord layer : glyph_layers)
|
|
palettes->add (layer.colorIdx);
|
|
}
|
|
}
|
|
|
|
void closure_forV1 (hb_set_t *glyphset,
|
|
hb_set_t *layer_indices,
|
|
hb_set_t *palette_indices) const
|
|
{
|
|
if (version != 1) return;
|
|
hb_set_t visited_glyphs;
|
|
|
|
hb_colrv1_closure_context_t c (this, &visited_glyphs, layer_indices, palette_indices);
|
|
const BaseGlyphList &baseglyph_paintrecords = this+baseGlyphList;
|
|
|
|
for (const BaseGlyphPaintRecord &baseglyph_paintrecord: baseglyph_paintrecords.iter ())
|
|
{
|
|
unsigned gid = baseglyph_paintrecord.glyphId;
|
|
if (!glyphset->has (gid)) continue;
|
|
|
|
const Paint &paint = &baseglyph_paintrecords+baseglyph_paintrecord.paint;
|
|
paint.dispatch (&c);
|
|
}
|
|
hb_set_union (glyphset, &visited_glyphs);
|
|
}
|
|
|
|
const LayerList& get_layerList () const
|
|
{ return (this+layerList); }
|
|
|
|
const BaseGlyphList& get_baseglyphList () const
|
|
{ return (this+baseGlyphList); }
|
|
|
|
bool sanitize (hb_sanitize_context_t *c) const
|
|
{
|
|
TRACE_SANITIZE (this);
|
|
return_trace (c->check_struct (this) &&
|
|
(this+baseGlyphsZ).sanitize (c, numBaseGlyphs) &&
|
|
(this+layersZ).sanitize (c, numLayers) &&
|
|
(version == 0 ||
|
|
(COLRV1_ENABLE_SUBSETTING && version == 1 &&
|
|
baseGlyphList.sanitize (c, this) &&
|
|
layerList.sanitize (c, this) &&
|
|
clipList.sanitize (c, this) &&
|
|
varIdxMap.sanitize (c, this) &&
|
|
varStore.sanitize (c, this))));
|
|
}
|
|
|
|
template<typename BaseIterator, typename LayerIterator,
|
|
hb_requires (hb_is_iterator (BaseIterator)),
|
|
hb_requires (hb_is_iterator (LayerIterator))>
|
|
bool serialize_V0 (hb_serialize_context_t *c,
|
|
unsigned version,
|
|
BaseIterator base_it,
|
|
LayerIterator layer_it)
|
|
{
|
|
TRACE_SERIALIZE (this);
|
|
if (unlikely (base_it.len () != layer_it.len ()))
|
|
return_trace (false);
|
|
|
|
this->version = version;
|
|
numLayers = 0;
|
|
numBaseGlyphs = base_it.len ();
|
|
if (numBaseGlyphs == 0)
|
|
{
|
|
baseGlyphsZ = 0;
|
|
layersZ = 0;
|
|
return_trace (true);
|
|
}
|
|
|
|
c->push ();
|
|
for (const hb_item_type<BaseIterator> _ : + base_it.iter ())
|
|
{
|
|
auto* record = c->embed (_);
|
|
if (unlikely (!record)) return_trace (false);
|
|
record->firstLayerIdx = numLayers;
|
|
numLayers += record->numLayers;
|
|
}
|
|
c->add_link (baseGlyphsZ, c->pop_pack ());
|
|
|
|
c->push ();
|
|
for (const hb_item_type<LayerIterator>& _ : + layer_it.iter ())
|
|
_.as_array ().copy (c);
|
|
|
|
c->add_link (layersZ, c->pop_pack ());
|
|
|
|
return_trace (true);
|
|
}
|
|
|
|
const BaseGlyphRecord* get_base_glyph_record (hb_codepoint_t gid) const
|
|
{
|
|
const BaseGlyphRecord* record = &(this+baseGlyphsZ).bsearch (numBaseGlyphs, (unsigned int) gid);
|
|
if (record == &Null (BaseGlyphRecord) ||
|
|
(record && (hb_codepoint_t) record->glyphId != gid))
|
|
record = nullptr;
|
|
return record;
|
|
}
|
|
|
|
const BaseGlyphPaintRecord* get_base_glyph_paintrecord (hb_codepoint_t gid) const
|
|
{
|
|
const BaseGlyphPaintRecord* record = &(this+baseGlyphList).bsearch ((unsigned) gid);
|
|
if ((record && (hb_codepoint_t) record->glyphId != gid))
|
|
record = nullptr;
|
|
return record;
|
|
}
|
|
|
|
bool subset (hb_subset_context_t *c) const
|
|
{
|
|
TRACE_SUBSET (this);
|
|
|
|
const hb_map_t &reverse_glyph_map = *c->plan->reverse_glyph_map;
|
|
const hb_set_t& glyphset = *c->plan->_glyphset_colred;
|
|
|
|
auto base_it =
|
|
+ hb_range (c->plan->num_output_glyphs ())
|
|
| hb_filter ([&](hb_codepoint_t new_gid)
|
|
{
|
|
hb_codepoint_t old_gid = reverse_glyph_map.get (new_gid);
|
|
if (glyphset.has (old_gid)) return true;
|
|
return false;
|
|
})
|
|
| hb_map_retains_sorting ([&](hb_codepoint_t new_gid)
|
|
{
|
|
hb_codepoint_t old_gid = reverse_glyph_map.get (new_gid);
|
|
|
|
const BaseGlyphRecord* old_record = get_base_glyph_record (old_gid);
|
|
if (unlikely (!old_record))
|
|
return hb_pair_t<bool, BaseGlyphRecord> (false, Null (BaseGlyphRecord));
|
|
BaseGlyphRecord new_record = {};
|
|
new_record.glyphId = new_gid;
|
|
new_record.numLayers = old_record->numLayers;
|
|
return hb_pair_t<bool, BaseGlyphRecord> (true, new_record);
|
|
})
|
|
| hb_filter (hb_first)
|
|
| hb_map_retains_sorting (hb_second)
|
|
;
|
|
|
|
auto layer_it =
|
|
+ hb_range (c->plan->num_output_glyphs ())
|
|
| hb_map (reverse_glyph_map)
|
|
| hb_filter (glyphset)
|
|
| hb_map_retains_sorting ([&](hb_codepoint_t old_gid)
|
|
{
|
|
const BaseGlyphRecord* old_record = get_base_glyph_record (old_gid);
|
|
hb_vector_t<LayerRecord> out_layers;
|
|
|
|
if (unlikely (!old_record ||
|
|
old_record->firstLayerIdx >= numLayers ||
|
|
old_record->firstLayerIdx + old_record->numLayers > numLayers))
|
|
return hb_pair_t<bool, hb_vector_t<LayerRecord>> (false, out_layers);
|
|
|
|
auto layers = (this+layersZ).as_array (numLayers).sub_array (old_record->firstLayerIdx,
|
|
old_record->numLayers);
|
|
out_layers.resize (layers.length);
|
|
for (unsigned int i = 0; i < layers.length; i++) {
|
|
out_layers[i] = layers[i];
|
|
hb_codepoint_t new_gid = 0;
|
|
if (unlikely (!c->plan->new_gid_for_old_gid (out_layers[i].glyphId, &new_gid)))
|
|
return hb_pair_t<bool, hb_vector_t<LayerRecord>> (false, out_layers);
|
|
out_layers[i].glyphId = new_gid;
|
|
out_layers[i].colorIdx = c->plan->colr_palettes->get (layers[i].colorIdx);
|
|
}
|
|
|
|
return hb_pair_t<bool, hb_vector_t<LayerRecord>> (true, out_layers);
|
|
})
|
|
| hb_filter (hb_first)
|
|
| hb_map_retains_sorting (hb_second)
|
|
;
|
|
|
|
if (version == 0 && (!base_it || !layer_it))
|
|
return_trace (false);
|
|
|
|
COLR *colr_prime = c->serializer->start_embed<COLR> ();
|
|
if (unlikely (!c->serializer->extend_min (colr_prime))) return_trace (false);
|
|
|
|
if (version == 0)
|
|
return_trace (colr_prime->serialize_V0 (c->serializer, version, base_it, layer_it));
|
|
|
|
auto snap = c->serializer->snapshot ();
|
|
if (!c->serializer->allocate_size<void> (5 * HBUINT32::static_size)) return_trace (false);
|
|
if (!colr_prime->baseGlyphList.serialize_subset (c, baseGlyphList, this))
|
|
{
|
|
if (c->serializer->in_error ()) return_trace (false);
|
|
//no more COLRv1 glyphs: downgrade to version 0
|
|
c->serializer->revert (snap);
|
|
return_trace (colr_prime->serialize_V0 (c->serializer, 0, base_it, layer_it));
|
|
}
|
|
|
|
if (!colr_prime->serialize_V0 (c->serializer, version, base_it, layer_it)) return_trace (false);
|
|
|
|
colr_prime->layerList.serialize_subset (c, layerList, this);
|
|
colr_prime->clipList.serialize_subset (c, clipList, this);
|
|
colr_prime->varIdxMap.serialize_copy (c->serializer, varIdxMap, this);
|
|
//TODO: subset varStore once it's implemented in fonttools
|
|
return_trace (true);
|
|
}
|
|
|
|
protected:
|
|
HBUINT16 version; /* Table version number (starts at 0). */
|
|
HBUINT16 numBaseGlyphs; /* Number of Base Glyph Records. */
|
|
NNOffset32To<SortedUnsizedArrayOf<BaseGlyphRecord>>
|
|
baseGlyphsZ; /* Offset to Base Glyph records. */
|
|
NNOffset32To<UnsizedArrayOf<LayerRecord>>
|
|
layersZ; /* Offset to Layer Records. */
|
|
HBUINT16 numLayers; /* Number of Layer Records. */
|
|
// Version-1 additions
|
|
Offset32To<BaseGlyphList> baseGlyphList;
|
|
Offset32To<LayerList> layerList;
|
|
Offset32To<ClipList> clipList; // Offset to ClipList table (may be NULL)
|
|
Offset32To<DeltaSetIndexMap> varIdxMap; // Offset to DeltaSetIndexMap table (may be NULL)
|
|
Offset32To<VariationStore> varStore;
|
|
public:
|
|
DEFINE_SIZE_MIN (14);
|
|
};
|
|
|
|
struct COLR_accelerator_t : COLR::accelerator_t {
|
|
COLR_accelerator_t (hb_face_t *face) : COLR::accelerator_t (face) {}
|
|
};
|
|
|
|
} /* namespace OT */
|
|
|
|
|
|
#endif /* HB_OT_COLOR_COLR_TABLE_HH */
|