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Diffstat (limited to 'src/3rdparty/harfbuzz-ng/src/hb-ot-color-colr-table.hh')
| -rw-r--r-- | src/3rdparty/harfbuzz-ng/src/hb-ot-color-colr-table.hh | 1144 |
1 files changed, 0 insertions, 1144 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/hb-ot-color-colr-table.hh b/src/3rdparty/harfbuzz-ng/src/hb-ot-color-colr-table.hh deleted file mode 100644 index 007ff3f47b..0000000000 --- a/src/3rdparty/harfbuzz-ng/src/hb-ot-color-colr-table.hh +++ /dev/null @@ -1,1144 +0,0 @@ -/* - * Copyright © 2018 Ebrahim Byagowi - * Copyright © 2020 Google, Inc. - * - * 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. - * - * Google Author(s): Calder Kitagawa - */ - -#ifndef HB_OT_COLOR_COLR_TABLE_HH -#define HB_OT_COLOR_COLR_TABLE_HH - -#include "hb-open-type.hh" -#include "hb-ot-layout-common.hh" - -/* - * COLR -- Color - * https://docs.microsoft.com/en-us/typography/opentype/spec/colr - */ -#define HB_OT_TAG_COLR HB_TAG('C','O','L','R') - -#ifndef COLRV1_MAX_NESTING_LEVEL -#define COLRV1_MAX_NESTING_LEVEL 100 -#endif - -#ifndef COLRV1_ENABLE_SUBSETTING -#define COLRV1_ENABLE_SUBSETTING 0 -#endif - -namespace OT { - -struct COLR; -struct hb_colrv1_closure_context_t : - hb_dispatch_context_t<hb_colrv1_closure_context_t> -{ - template <typename T> - return_t dispatch (const T &obj) - { - if (unlikely (nesting_level_left == 0)) - return hb_empty_t (); - - if (paint_visited (&obj)) - return hb_empty_t (); - - nesting_level_left--; - obj.closurev1 (this); - nesting_level_left++; - return hb_empty_t (); - } - static return_t default_return_value () { return hb_empty_t (); } - - bool paint_visited (const void *paint) - { - hb_codepoint_t delta = (hb_codepoint_t) ((uintptr_t) paint - (uintptr_t) base); - if (visited_paint.has (delta)) - return true; - - visited_paint.add (delta); - return false; - } - - const COLR* get_colr_table () const - { return reinterpret_cast<const COLR *> (base); } - - void add_glyph (unsigned glyph_id) - { glyphs->add (glyph_id); } - - void add_layer_indices (unsigned first_layer_index, unsigned num_of_layers) - { layer_indices->add_range (first_layer_index, first_layer_index + num_of_layers - 1); } - - void add_palette_index (unsigned palette_index) - { palette_indices->add (palette_index); } - - public: - const void *base; - hb_set_t visited_paint; - hb_set_t *glyphs; - hb_set_t *layer_indices; - hb_set_t *palette_indices; - unsigned nesting_level_left; - - hb_colrv1_closure_context_t (const void *base_, - hb_set_t *glyphs_, - hb_set_t *layer_indices_, - hb_set_t *palette_indices_, - unsigned nesting_level_left_ = COLRV1_MAX_NESTING_LEVEL) : - base (base_), - glyphs (glyphs_), - layer_indices (layer_indices_), - palette_indices (palette_indices_), - nesting_level_left (nesting_level_left_) - {} -}; - -struct LayerRecord -{ - operator hb_ot_color_layer_t () const { return {glyphId, colorIdx}; } - - bool sanitize (hb_sanitize_context_t *c) const - { - TRACE_SANITIZE (this); - return_trace (c->check_struct (this)); - } - - public: - HBGlyphID glyphId; /* Glyph ID of layer glyph */ - Index colorIdx; /* Index value to use with a - * selected color palette. - * An index value of 0xFFFF - * is a special case indicating - * that the text foreground - * color (defined by a - * higher-level client) should - * be used and shall not be - * treated as actual index - * into CPAL ColorRecord array. */ - public: - DEFINE_SIZE_STATIC (4); -}; - -struct BaseGlyphRecord -{ - int cmp (hb_codepoint_t g) const - { return g < glyphId ? -1 : g > glyphId ? 1 : 0; } - - bool sanitize (hb_sanitize_context_t *c) const - { - TRACE_SANITIZE (this); - return_trace (likely (c->check_struct (this))); - } - - public: - HBGlyphID glyphId; /* Glyph ID of reference glyph */ - HBUINT16 firstLayerIdx; /* Index (from beginning of - * the Layer Records) to the - * layer record. There will be - * numLayers consecutive entries - * for this base glyph. */ - HBUINT16 numLayers; /* Number of color layers - * associated with this glyph */ - public: - DEFINE_SIZE_STATIC (6); -}; - -template <typename T> -struct Variable -{ - bool sanitize (hb_sanitize_context_t *c) const - { - TRACE_SANITIZE (this); - return_trace (c->check_struct (this)); - } - - protected: - T value; - VarIdx varIdx; - public: - DEFINE_SIZE_STATIC (4 + T::static_size); -}; - -template <typename T> -struct NoVariable -{ - bool sanitize (hb_sanitize_context_t *c) const - { - TRACE_SANITIZE (this); - return_trace (c->check_struct (this)); - } - - T value; - public: - DEFINE_SIZE_STATIC (T::static_size); -}; - -// Color structures - -template <template<typename> class Var> -struct ColorIndex -{ - 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->paletteIndex, c->plan->colr_palettes->get (paletteIndex), - HB_SERIALIZE_ERROR_INT_OVERFLOW)); - } - - bool sanitize (hb_sanitize_context_t *c) const - { - TRACE_SANITIZE (this); - return_trace (c->check_struct (this)); - } - - HBUINT16 paletteIndex; - Var<F2DOT14> alpha; - public: - DEFINE_SIZE_STATIC (2 + Var<F2DOT14>::static_size); -}; - -template <template<typename> class Var> -struct ColorStop -{ - bool subset (hb_subset_context_t *c) const - { - TRACE_SUBSET (this); - if (unlikely (!c->serializer->embed (stopOffset))) return_trace (false); - return_trace (color.subset (c)); - } - - bool sanitize (hb_sanitize_context_t *c) const - { - TRACE_SANITIZE (this); - return_trace (c->check_struct (this)); - } - - Var<F2DOT14> stopOffset; - ColorIndex<Var> color; - public: - DEFINE_SIZE_STATIC (Var<F2DOT14>::static_size + ColorIndex<Var>::static_size); -}; - -struct Extend : HBUINT8 -{ - enum { - EXTEND_PAD = 0, - EXTEND_REPEAT = 1, - EXTEND_REFLECT = 2, - }; - public: - DEFINE_SIZE_STATIC (1); -}; - -template <template<typename> class Var> -struct ColorLine -{ - bool subset (hb_subset_context_t *c) const - { - TRACE_SUBSET (this); - auto *out = c->serializer->start_embed (this); - if (unlikely (!out)) return_trace (false); - if (unlikely (!c->serializer->extend_min (out))) return_trace (false); - - if (!c->serializer->check_assign (out->extend, extend, HB_SERIALIZE_ERROR_INT_OVERFLOW)) return_trace (false); - if (!c->serializer->check_assign (out->stops.len, stops.len, HB_SERIALIZE_ERROR_ARRAY_OVERFLOW)) return_trace (false); - - for (const auto& stop : stops.iter ()) - { - if (!stop.subset (c)) return_trace (false); - } - return_trace (true); - } - - bool sanitize (hb_sanitize_context_t *c) const - { - TRACE_SANITIZE (this); - return_trace (c->check_struct (this) && - stops.sanitize (c)); - } - - Extend extend; - Array16Of<ColorStop<Var>> stops; - public: - DEFINE_SIZE_ARRAY_SIZED (3, stops); -}; - -// Composition modes - -// Compositing modes are taken from https://www.w3.org/TR/compositing-1/ -// NOTE: a brief audit of major implementations suggests most support most -// or all of the specified modes. -struct CompositeMode : HBUINT8 -{ - enum { - // Porter-Duff modes - // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators - COMPOSITE_CLEAR = 0, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_clear - COMPOSITE_SRC = 1, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_src - COMPOSITE_DEST = 2, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_dst - COMPOSITE_SRC_OVER = 3, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_srcover - COMPOSITE_DEST_OVER = 4, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_dstover - COMPOSITE_SRC_IN = 5, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_srcin - COMPOSITE_DEST_IN = 6, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_dstin - COMPOSITE_SRC_OUT = 7, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_srcout - COMPOSITE_DEST_OUT = 8, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_dstout - COMPOSITE_SRC_ATOP = 9, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_srcatop - COMPOSITE_DEST_ATOP = 10, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_dstatop - COMPOSITE_XOR = 11, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_xor - COMPOSITE_PLUS = 12, // https://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_plus - - // Blend modes - // https://www.w3.org/TR/compositing-1/#blending - COMPOSITE_SCREEN = 13, // https://www.w3.org/TR/compositing-1/#blendingscreen - COMPOSITE_OVERLAY = 14, // https://www.w3.org/TR/compositing-1/#blendingoverlay - COMPOSITE_DARKEN = 15, // https://www.w3.org/TR/compositing-1/#blendingdarken - COMPOSITE_LIGHTEN = 16, // https://www.w3.org/TR/compositing-1/#blendinglighten - COMPOSITE_COLOR_DODGE = 17, // https://www.w3.org/TR/compositing-1/#blendingcolordodge - COMPOSITE_COLOR_BURN = 18, // https://www.w3.org/TR/compositing-1/#blendingcolorburn - COMPOSITE_HARD_LIGHT = 19, // https://www.w3.org/TR/compositing-1/#blendinghardlight - COMPOSITE_SOFT_LIGHT = 20, // https://www.w3.org/TR/compositing-1/#blendingsoftlight - COMPOSITE_DIFFERENCE = 21, // https://www.w3.org/TR/compositing-1/#blendingdifference - COMPOSITE_EXCLUSION = 22, // https://www.w3.org/TR/compositing-1/#blendingexclusion - COMPOSITE_MULTIPLY = 23, // https://www.w3.org/TR/compositing-1/#blendingmultiply - - // Modes that, uniquely, do not operate on components - // https://www.w3.org/TR/compositing-1/#blendingnonseparable - COMPOSITE_HSL_HUE = 24, // https://www.w3.org/TR/compositing-1/#blendinghue - COMPOSITE_HSL_SATURATION = 25, // https://www.w3.org/TR/compositing-1/#blendingsaturation - COMPOSITE_HSL_COLOR = 26, // https://www.w3.org/TR/compositing-1/#blendingcolor - COMPOSITE_HSL_LUMINOSITY = 27, // https://www.w3.org/TR/compositing-1/#blendingluminosity - }; - public: - DEFINE_SIZE_STATIC (1); -}; - -template <template<typename> class Var> -struct Affine2x3 -{ - bool sanitize (hb_sanitize_context_t *c) const - { - TRACE_SANITIZE (this); - return_trace (c->check_struct (this)); - } - - Var<HBFixed> xx; - Var<HBFixed> yx; - Var<HBFixed> xy; - Var<HBFixed> yy; - Var<HBFixed> dx; - Var<HBFixed> dy; - public: - DEFINE_SIZE_STATIC (6 * Var<HBFixed>::static_size); -}; - -struct PaintColrLayers -{ - 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->firstLayerIndex, c->plan->colrv1_layers->get (firstLayerIndex), - HB_SERIALIZE_ERROR_INT_OVERFLOW)); - - return_trace (true); - } - - bool sanitize (hb_sanitize_context_t *c) const - { - TRACE_SANITIZE (this); - return_trace (c->check_struct (this)); - } - - HBUINT8 format; /* format = 1 */ - HBUINT8 numLayers; - HBUINT32 firstLayerIndex; /* index into COLRv1::layersV1 */ - public: - DEFINE_SIZE_STATIC (6); -}; - -template <template<typename> class Var> -struct PaintSolid -{ - void closurev1 (hb_colrv1_closure_context_t* c) const - { c->add_palette_index (color.paletteIndex); } - - bool subset (hb_subset_context_t *c) const - { - TRACE_SUBSET (this); - if (unlikely (!c->serializer->embed (format))) return_trace (false); - return_trace (color.subset (c)); - } - - bool sanitize (hb_sanitize_context_t *c) const - { - TRACE_SANITIZE (this); - return_trace (c->check_struct (this)); - } - - HBUINT8 format; /* format = 2(noVar) or 3(Var)*/ - ColorIndex<Var> color; - public: - DEFINE_SIZE_STATIC (1 + ColorIndex<Var>::static_size); -}; - -template <template<typename> class Var> -struct PaintLinearGradient -{ - void closurev1 (hb_colrv1_closure_context_t* c) const - { - for (const auto &stop : (this+colorLine).stops.iter ()) - c->add_palette_index (stop.color.paletteIndex); - } - - 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 = 4(noVar) or 5 (Var) */ - Offset24To<ColorLine<Var>> colorLine; /* Offset (from beginning of PaintLinearGradient - * table) to ColorLine subtable. */ - Var<FWORD> x0; - Var<FWORD> y0; - Var<FWORD> x1; - Var<FWORD> y1; - Var<FWORD> x2; - Var<FWORD> y2; - public: - DEFINE_SIZE_STATIC (4 + 6 * Var<FWORD>::static_size); -}; - -template <template<typename> class Var> -struct PaintRadialGradient -{ - 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)); - } - - void closurev1 (hb_colrv1_closure_context_t* c) const - { - for (const auto &stop : (this+colorLine).stops.iter ()) - c->add_palette_index (stop.color.paletteIndex); - } - - bool sanitize (hb_sanitize_context_t *c) const - { - TRACE_SANITIZE (this); - return_trace (c->check_struct (this) && colorLine.sanitize (c, this)); - } - - HBUINT8 format; /* format = 6(noVar) or 7 (Var) */ - Offset24To<ColorLine<Var>> colorLine; /* Offset (from beginning of PaintRadialGradient - * table) to ColorLine subtable. */ - Var<FWORD> x0; - Var<FWORD> y0; - Var<UFWORD> radius0; - Var<FWORD> x1; - Var<FWORD> y1; - Var<UFWORD> radius1; - public: - DEFINE_SIZE_STATIC (4 + 6 * Var<FWORD>::static_size); -}; - -template <template<typename> class Var> -struct PaintSweepGradient -{ - 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)); - } - - void closurev1 (hb_colrv1_closure_context_t* c) const - { - for (const auto &stop : (this+colorLine).stops.iter ()) - c->add_palette_index (stop.color.paletteIndex); - } - - 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. */ - Var<FWORD> centerX; - Var<FWORD> centerY; - Var<HBFixed> startAngle; - Var<HBFixed> endAngle; - public: - DEFINE_SIZE_STATIC (2 * Var<FWORD>::static_size + 2 * Var<HBFixed>::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); - - 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 = 12(noVar) or 13 (Var) */ - Offset24To<Paint> src; /* Offset (from beginning of PaintTransform table) to Paint subtable. */ - Affine2x3<Var> transform; - public: - DEFINE_SIZE_STATIC (4 + Affine2x3<Var>::static_size); -}; - -template <template<typename> class Var> -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. */ - Var<HBFixed> dx; - Var<HBFixed> dy; - public: - DEFINE_SIZE_STATIC (4 + Var<HBFixed>::static_size); -}; - -template <template<typename> class Var> -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 = 16 (noVar) or 17(Var) */ - Offset24To<Paint> src; /* Offset (from beginning of PaintRotate table) to Paint subtable. */ - Var<HBFixed> angle; - Var<HBFixed> centerX; - Var<HBFixed> centerY; - public: - DEFINE_SIZE_STATIC (4 + 3 * Var<HBFixed>::static_size); -}; - -template <template<typename> class Var> -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 = 18(noVar) or 19 (Var) */ - Offset24To<Paint> src; /* Offset (from beginning of PaintSkew table) to Paint subtable. */ - Var<HBFixed> xSkewAngle; - Var<HBFixed> ySkewAngle; - Var<HBFixed> centerX; - Var<HBFixed> centerY; - public: - DEFINE_SIZE_STATIC (4 + 4 * Var<HBFixed>::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 = 20 */ - 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 Paint -{ - 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, hb_forward<Ts> (ds)...)); - case 2: return_trace (c->dispatch (u.paintformat2, hb_forward<Ts> (ds)...)); - case 3: return_trace (c->dispatch (u.paintformat3, hb_forward<Ts> (ds)...)); - case 4: return_trace (c->dispatch (u.paintformat4, hb_forward<Ts> (ds)...)); - case 5: return_trace (c->dispatch (u.paintformat5, hb_forward<Ts> (ds)...)); - case 6: return_trace (c->dispatch (u.paintformat6, hb_forward<Ts> (ds)...)); - case 7: return_trace (c->dispatch (u.paintformat7, hb_forward<Ts> (ds)...)); - case 8: return_trace (c->dispatch (u.paintformat8, hb_forward<Ts> (ds)...)); - case 9: return_trace (c->dispatch (u.paintformat9, hb_forward<Ts> (ds)...)); - case 10: return_trace (c->dispatch (u.paintformat10, hb_forward<Ts> (ds)...)); - case 11: return_trace (c->dispatch (u.paintformat11, hb_forward<Ts> (ds)...)); - case 12: return_trace (c->dispatch (u.paintformat12, hb_forward<Ts> (ds)...)); - case 13: return_trace (c->dispatch (u.paintformat13, hb_forward<Ts> (ds)...)); - case 14: return_trace (c->dispatch (u.paintformat14, hb_forward<Ts> (ds)...)); - case 15: return_trace (c->dispatch (u.paintformat15, hb_forward<Ts> (ds)...)); - case 16: return_trace (c->dispatch (u.paintformat16, hb_forward<Ts> (ds)...)); - case 17: return_trace (c->dispatch (u.paintformat17, hb_forward<Ts> (ds)...)); - case 18: return_trace (c->dispatch (u.paintformat18, hb_forward<Ts> (ds)...)); - case 19: return_trace (c->dispatch (u.paintformat19, hb_forward<Ts> (ds)...)); - case 20: return_trace (c->dispatch (u.paintformat20, hb_forward<Ts> (ds)...)); - default:return_trace (c->default_return_value ()); - } - } - - protected: - union { - HBUINT8 format; - PaintColrLayers paintformat1; - PaintSolid<NoVariable> paintformat2; - PaintSolid<Variable> paintformat3; - PaintLinearGradient<NoVariable> paintformat4; - PaintLinearGradient<Variable> paintformat5; - PaintRadialGradient<NoVariable> paintformat6; - PaintRadialGradient<Variable> paintformat7; - PaintSweepGradient<NoVariable> paintformat8; - PaintSweepGradient<Variable> paintformat9; - PaintGlyph paintformat10; - PaintColrGlyph paintformat11; - PaintTransform<NoVariable> paintformat12; - PaintTransform<Variable> paintformat13; - PaintTranslate<NoVariable> paintformat14; - PaintTranslate<Variable> paintformat15; - PaintRotate<NoVariable> paintformat16; - PaintRotate<Variable> paintformat17; - PaintSkew<NoVariable> paintformat18; - PaintSkew<Variable> paintformat19; - PaintComposite paintformat20; - } u; -}; - -struct BaseGlyphV1Record -{ - 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: - HBGlyphID glyphId; /* Glyph ID of reference glyph */ - Offset32To<Paint> paint; /* Offset (from beginning of BaseGlyphV1Record array) to Paint, - * Typically PaintColrLayers */ - public: - DEFINE_SIZE_STATIC (6); -}; - -struct BaseGlyphV1List : SortedArray32Of<BaseGlyphV1Record> -{ - 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; - - 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<BaseGlyphV1Record>::sanitize (c, this)); - } -}; - -struct LayerV1List : 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 () {} - ~accelerator_t () { fini (); } - - void init (hb_face_t *face) - { colr = hb_sanitize_context_t ().reference_table<COLR> (face); } - - void fini () { 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 BaseGlyphV1List &baseglyphV1_records = this+baseGlyphsV1List; - - for (const BaseGlyphV1Record &baseglyphV1record: baseglyphV1_records.iter ()) - { - unsigned gid = baseglyphV1record.glyphId; - if (!glyphset->has (gid)) continue; - - const Paint &paint = &baseglyphV1_records+baseglyphV1record.paint; - paint.dispatch (&c); - } - hb_set_union (glyphset, &visited_glyphs); - } - - const LayerV1List& get_layerV1List () const - { return (this+layersV1); } - - const BaseGlyphV1List& get_baseglyphV1List () const - { return (this+baseGlyphsV1List); } - - 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 && - baseGlyphsV1List.sanitize (c, this) && - layersV1.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); - - if (unlikely (!c->extend_min (this))) return_trace (false); - this->version = version; - numLayers = 0; - numBaseGlyphs = base_it.len (); - if (base_it.len () == 0) - { - baseGlyphsZ = 0; - layersZ = 0; - return_trace (true); - } - baseGlyphsZ = COLR::min_size; - layersZ = COLR::min_size + numBaseGlyphs * BaseGlyphRecord::min_size; - - 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; - } - - for (const hb_item_type<LayerIterator>& _ : + layer_it.iter ()) - _.as_array ().copy (c); - - return_trace (true); - } - - const BaseGlyphRecord* get_base_glyph_record (hb_codepoint_t gid) const - { - if ((unsigned int) gid == 0) // Ignore notdef. - return nullptr; - const BaseGlyphRecord* record = &(this+baseGlyphsZ).bsearch (numBaseGlyphs, (unsigned int) gid); - if ((record && (hb_codepoint_t) record->glyphId != gid)) - record = nullptr; - return record; - } - - const BaseGlyphV1Record* get_base_glyphV1_record (hb_codepoint_t gid) const - { - const BaseGlyphV1Record* record = &(this+baseGlyphsV1List).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; - - auto base_it = - + hb_range (c->plan->num_output_glyphs ()) - | 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_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> (); - bool ret = colr_prime->serialize_V0 (c->serializer, version, base_it, layer_it); - - if (version == 0) return_trace (ret); - auto snap = c->serializer->snapshot (); - if (!c->serializer->allocate_size<void> (3 * HBUINT32::static_size)) return_trace (false); - if (!colr_prime->baseGlyphsV1List.serialize_subset (c, baseGlyphsV1List, this)) - { - if (c->serializer->in_error ()) return_trace (false); - //no more COLRv1 glyphs: downgrade to version 0 - c->serializer->revert (snap); - colr_prime->version = 0; - return_trace (true); - } - - if (!colr_prime->layersV1.serialize_subset (c, layersV1, this)) return_trace (false); - - colr_prime->varStore = 0; - //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<BaseGlyphV1List> baseGlyphsV1List; - Offset32To<LayerV1List> layersV1; - Offset32To<VariationStore> varStore; - public: - DEFINE_SIZE_MIN (14); -}; - -} /* namespace OT */ - - -#endif /* HB_OT_COLOR_COLR_TABLE_HH */ |