diff options
Diffstat (limited to 'src/3rdparty/harfbuzz-ng/src/OT/Color/COLR/COLR.hh')
| -rw-r--r-- | src/3rdparty/harfbuzz-ng/src/OT/Color/COLR/COLR.hh | 2497 |
1 files changed, 2497 insertions, 0 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/OT/Color/COLR/COLR.hh b/src/3rdparty/harfbuzz-ng/src/OT/Color/COLR/COLR.hh new file mode 100644 index 0000000000..623775a771 --- /dev/null +++ b/src/3rdparty/harfbuzz-ng/src/OT/Color/COLR/COLR.hh @@ -0,0 +1,2497 @@ +/* + * 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 OT_COLOR_COLR_COLR_HH +#define OT_COLOR_COLR_COLR_HH + +#include "../../../hb.hh" +#include "../../../hb-open-type.hh" +#include "../../../hb-ot-var-common.hh" +#include "../../../hb-paint.hh" +#include "../../../hb-paint-extents.hh" + +/* + * COLR -- Color + * https://docs.microsoft.com/en-us/typography/opentype/spec/colr + */ +#define HB_OT_TAG_COLR HB_TAG('C','O','L','R') + +namespace OT { +struct hb_paint_context_t; +} + +namespace OT { + +struct COLR; + +struct Paint; + +struct hb_paint_context_t : + hb_dispatch_context_t<hb_paint_context_t> +{ + const char *get_name () { return "PAINT"; } + template <typename T> + return_t dispatch (const T &obj) { obj.paint_glyph (this); return hb_empty_t (); } + static return_t default_return_value () { return hb_empty_t (); } + + const COLR* get_colr_table () const + { return reinterpret_cast<const COLR *> (base); } + +public: + const void *base; + hb_paint_funcs_t *funcs; + void *data; + hb_font_t *font; + unsigned int palette_index; + hb_color_t foreground; + ItemVarStoreInstancer &instancer; + hb_map_t current_glyphs; + hb_map_t current_layers; + int depth_left = HB_MAX_NESTING_LEVEL; + int edge_count = HB_COLRV1_MAX_EDGE_COUNT; + + hb_paint_context_t (const void *base_, + hb_paint_funcs_t *funcs_, + void *data_, + hb_font_t *font_, + unsigned int palette_, + hb_color_t foreground_, + ItemVarStoreInstancer &instancer_) : + base (base_), + funcs (funcs_), + data (data_), + font (font_), + palette_index (palette_), + foreground (foreground_), + instancer (instancer_) + { } + + hb_color_t get_color (unsigned int color_index, float alpha, hb_bool_t *is_foreground) + { + hb_color_t color = foreground; + + *is_foreground = true; + + if (color_index != 0xffff) + { + if (!funcs->custom_palette_color (data, color_index, &color)) + { + unsigned int clen = 1; + hb_face_t *face = hb_font_get_face (font); + + hb_ot_color_palette_get_colors (face, palette_index, color_index, &clen, &color); + } + + *is_foreground = false; + } + + return HB_COLOR (hb_color_get_blue (color), + hb_color_get_green (color), + hb_color_get_red (color), + hb_color_get_alpha (color) * alpha); + } + + inline void recurse (const Paint &paint); +}; + +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.in_error() || 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_ = HB_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: + HBGlyphID16 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 (c->check_struct (this)); + } + + public: + HBGlyphID16 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 +{ + static constexpr bool is_variable = true; + + Variable<T>* copy (hb_serialize_context_t *c) const + { + TRACE_SERIALIZE (this); + return_trace (c->embed (this)); + } + + void closurev1 (hb_colrv1_closure_context_t* c) const + { value.closurev1 (c); } + + bool subset (hb_subset_context_t *c, + const ItemVarStoreInstancer &instancer) const + { + TRACE_SUBSET (this); + if (!value.subset (c, instancer, varIdxBase)) return_trace (false); + if (c->plan->all_axes_pinned) + return_trace (true); + + //TODO: update varIdxBase for partial-instancing + return_trace (c->serializer->embed (varIdxBase)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && value.sanitize (c)); + } + + void paint_glyph (hb_paint_context_t *c) const + { + TRACE_PAINT (this); + value.paint_glyph (c, varIdxBase); + } + + void get_color_stop (hb_paint_context_t *c, + hb_color_stop_t *stop, + const ItemVarStoreInstancer &instancer) const + { + value.get_color_stop (c, stop, varIdxBase, instancer); + } + + hb_paint_extend_t get_extend () const + { + return value.get_extend (); + } + + protected: + T value; + public: + VarIdx varIdxBase; + public: + DEFINE_SIZE_MIN (VarIdx::static_size + T::min_size); +}; + +template <typename T> +struct NoVariable +{ + static constexpr bool is_variable = false; + + static constexpr uint32_t varIdxBase = VarIdx::NO_VARIATION; + + NoVariable<T>* copy (hb_serialize_context_t *c) const + { + TRACE_SERIALIZE (this); + return_trace (c->embed (this)); + } + + void closurev1 (hb_colrv1_closure_context_t* c) const + { value.closurev1 (c); } + + bool subset (hb_subset_context_t *c, + const ItemVarStoreInstancer &instancer) const + { + TRACE_SUBSET (this); + return_trace (value.subset (c, instancer, varIdxBase)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && value.sanitize (c)); + } + + void paint_glyph (hb_paint_context_t *c) const + { + TRACE_PAINT (this); + value.paint_glyph (c, varIdxBase); + } + + void get_color_stop (hb_paint_context_t *c, + hb_color_stop_t *stop, + const ItemVarStoreInstancer &instancer) const + { + value.get_color_stop (c, stop, VarIdx::NO_VARIATION, instancer); + } + + hb_paint_extend_t get_extend () const + { + return value.get_extend (); + } + + T value; + public: + DEFINE_SIZE_MIN (T::min_size); +}; + +// Color structures + +struct ColorStop +{ + void closurev1 (hb_colrv1_closure_context_t* c) const + { c->add_palette_index (paletteIndex); } + + bool subset (hb_subset_context_t *c, + const ItemVarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (*this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->stopOffset.set_float (stopOffset.to_float(instancer (varIdxBase, 0))); + out->alpha.set_float (alpha.to_float (instancer (varIdxBase, 1))); + } + + 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)); + } + + void get_color_stop (hb_paint_context_t *c, + hb_color_stop_t *out, + uint32_t varIdx, + const ItemVarStoreInstancer &instancer) const + { + out->offset = stopOffset.to_float(instancer (varIdx, 0)); + out->color = c->get_color (paletteIndex, + alpha.to_float (instancer (varIdx, 1)), + &out->is_foreground); + } + + F2DOT14 stopOffset; + HBUINT16 paletteIndex; + F2DOT14 alpha; + public: + DEFINE_SIZE_STATIC (2 + 2 * F2DOT14::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 +{ + void closurev1 (hb_colrv1_closure_context_t* c) const + { + for (const auto &stop : stops.iter ()) + stop.closurev1 (c); + } + + bool subset (hb_subset_context_t *c, + const ItemVarStoreInstancer &instancer) 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->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, instancer)) 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)); + } + + /* get up to count stops from start */ + unsigned int + get_color_stops (hb_paint_context_t *c, + unsigned int start, + unsigned int *count, + hb_color_stop_t *color_stops, + const ItemVarStoreInstancer &instancer) const + { + unsigned int len = stops.len; + + if (count && color_stops) + { + unsigned int i; + for (i = 0; i < *count && start + i < len; i++) + stops[start + i].get_color_stop (c, &color_stops[i], instancer); + *count = i; + } + + return len; + } + + HB_INTERNAL static unsigned int static_get_color_stops (hb_color_line_t *color_line, + void *color_line_data, + unsigned int start, + unsigned int *count, + hb_color_stop_t *color_stops, + void *user_data) + { + const ColorLine *thiz = (const ColorLine *) color_line_data; + hb_paint_context_t *c = (hb_paint_context_t *) user_data; + return thiz->get_color_stops (c, start, count, color_stops, c->instancer); + } + + hb_paint_extend_t get_extend () const + { + return (hb_paint_extend_t) (unsigned int) extend; + } + + HB_INTERNAL static hb_paint_extend_t static_get_extend (hb_color_line_t *color_line, + void *color_line_data, + void *user_data) + { + const ColorLine *thiz = (const ColorLine *) color_line_data; + return thiz->get_extend (); + } + + Extend extend; + Array16Of<Var<ColorStop>> 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); +}; + +struct Affine2x3 +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + bool subset (hb_subset_context_t *c, + const ItemVarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (*this); + if (unlikely (!out)) return_trace (false); + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->xx.set_float (xx.to_float(instancer (varIdxBase, 0))); + out->yx.set_float (yx.to_float(instancer (varIdxBase, 1))); + out->xy.set_float (xy.to_float(instancer (varIdxBase, 2))); + out->yy.set_float (yy.to_float(instancer (varIdxBase, 3))); + out->dx.set_float (dx.to_float(instancer (varIdxBase, 4))); + out->dy.set_float (dy.to_float(instancer (varIdxBase, 5))); + } + return_trace (true); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + TRACE_PAINT (this); + c->funcs->push_transform (c->data, + xx.to_float (c->instancer (varIdxBase, 0)), + yx.to_float (c->instancer (varIdxBase, 1)), + xy.to_float (c->instancer (varIdxBase, 2)), + yy.to_float (c->instancer (varIdxBase, 3)), + dx.to_float (c->instancer (varIdxBase, 4)), + dy.to_float (c->instancer (varIdxBase, 5))); + } + + F16DOT16 xx; + F16DOT16 yx; + F16DOT16 xy; + F16DOT16 yy; + F16DOT16 dx; + F16DOT16 dy; + public: + DEFINE_SIZE_STATIC (6 * F16DOT16::static_size); +}; + +struct PaintColrLayers +{ + void closurev1 (hb_colrv1_closure_context_t* c) const; + + bool subset (hb_subset_context_t *c, + const ItemVarStoreInstancer &instancer HB_UNUSED) 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)); + } + + inline void paint_glyph (hb_paint_context_t *c) const; + + HBUINT8 format; /* format = 1 */ + HBUINT8 numLayers; + HBUINT32 firstLayerIndex; /* index into COLRv1::layerList */ + public: + DEFINE_SIZE_STATIC (6); +}; + +struct PaintSolid +{ + void closurev1 (hb_colrv1_closure_context_t* c) const + { c->add_palette_index (paletteIndex); } + + bool subset (hb_subset_context_t *c, + const ItemVarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (*this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + out->alpha.set_float (alpha.to_float (instancer (varIdxBase, 0))); + + if (format == 3 && c->plan->all_axes_pinned) + out->format = 2; + + 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)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + TRACE_PAINT (this); + hb_bool_t is_foreground; + hb_color_t color; + + color = c->get_color (paletteIndex, + alpha.to_float (c->instancer (varIdxBase, 0)), + &is_foreground); + c->funcs->color (c->data, is_foreground, color); + } + + HBUINT8 format; /* format = 2(noVar) or 3(Var)*/ + HBUINT16 paletteIndex; + F2DOT14 alpha; + public: + DEFINE_SIZE_STATIC (3 + F2DOT14::static_size); +}; + +template <template<typename> class Var> +struct PaintLinearGradient +{ + void closurev1 (hb_colrv1_closure_context_t* c) const + { (this+colorLine).closurev1 (c); } + + bool subset (hb_subset_context_t *c, + const ItemVarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->x0 = x0 + (int) roundf (instancer (varIdxBase, 0)); + out->y0 = y0 + (int) roundf (instancer (varIdxBase, 1)); + out->x1 = x1 + (int) roundf (instancer (varIdxBase, 2)); + out->y1 = y1 + (int) roundf (instancer (varIdxBase, 3)); + out->x2 = x2 + (int) roundf (instancer (varIdxBase, 4)); + out->y2 = y2 + (int) roundf (instancer (varIdxBase, 5)); + } + + if (format == 5 && c->plan->all_axes_pinned) + out->format = 4; + + return_trace (out->colorLine.serialize_subset (c, colorLine, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && colorLine.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + TRACE_PAINT (this); + hb_color_line_t cl = { + (void *) &(this+colorLine), + (this+colorLine).static_get_color_stops, c, + (this+colorLine).static_get_extend, nullptr + }; + + c->funcs->linear_gradient (c->data, &cl, + x0 + c->instancer (varIdxBase, 0), + y0 + c->instancer (varIdxBase, 1), + x1 + c->instancer (varIdxBase, 2), + y1 + c->instancer (varIdxBase, 3), + x2 + c->instancer (varIdxBase, 4), + y2 + c->instancer (varIdxBase, 5)); + } + + HBUINT8 format; /* format = 4(noVar) or 5 (Var) */ + Offset24To<ColorLine<Var>> colorLine; /* Offset (from beginning of PaintLinearGradient + * table) to ColorLine subtable. */ + FWORD x0; + FWORD y0; + FWORD x1; + FWORD y1; + FWORD x2; + FWORD y2; + public: + DEFINE_SIZE_STATIC (4 + 6 * FWORD::static_size); +}; + +template <template<typename> class Var> +struct PaintRadialGradient +{ + void closurev1 (hb_colrv1_closure_context_t* c) const + { (this+colorLine).closurev1 (c); } + + bool subset (hb_subset_context_t *c, + const ItemVarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->x0 = x0 + (int) roundf (instancer (varIdxBase, 0)); + out->y0 = y0 + (int) roundf (instancer (varIdxBase, 1)); + out->radius0 = radius0 + (unsigned) roundf (instancer (varIdxBase, 2)); + out->x1 = x1 + (int) roundf (instancer (varIdxBase, 3)); + out->y1 = y1 + (int) roundf (instancer (varIdxBase, 4)); + out->radius1 = radius1 + (unsigned) roundf (instancer (varIdxBase, 5)); + } + + if (format == 7 && c->plan->all_axes_pinned) + out->format = 6; + + return_trace (out->colorLine.serialize_subset (c, colorLine, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && colorLine.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + TRACE_PAINT (this); + hb_color_line_t cl = { + (void *) &(this+colorLine), + (this+colorLine).static_get_color_stops, c, + (this+colorLine).static_get_extend, nullptr + }; + + c->funcs->radial_gradient (c->data, &cl, + x0 + c->instancer (varIdxBase, 0), + y0 + c->instancer (varIdxBase, 1), + radius0 + c->instancer (varIdxBase, 2), + x1 + c->instancer (varIdxBase, 3), + y1 + c->instancer (varIdxBase, 4), + radius1 + c->instancer (varIdxBase, 5)); + } + + 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 ItemVarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->centerX = centerX + (int) roundf (instancer (varIdxBase, 0)); + out->centerY = centerY + (int) roundf (instancer (varIdxBase, 1)); + out->startAngle.set_float (startAngle.to_float (instancer (varIdxBase, 2))); + out->endAngle.set_float (endAngle.to_float (instancer (varIdxBase, 3))); + } + + if (format == 9 && c->plan->all_axes_pinned) + out->format = 8; + + return_trace (out->colorLine.serialize_subset (c, colorLine, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && colorLine.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + TRACE_PAINT (this); + hb_color_line_t cl = { + (void *) &(this+colorLine), + (this+colorLine).static_get_color_stops, c, + (this+colorLine).static_get_extend, nullptr + }; + + c->funcs->sweep_gradient (c->data, &cl, + centerX + c->instancer (varIdxBase, 0), + centerY + c->instancer (varIdxBase, 1), + (startAngle.to_float (c->instancer (varIdxBase, 2)) + 1) * HB_PI, + (endAngle.to_float (c->instancer (varIdxBase, 3)) + 1) * HB_PI); + } + + 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); +}; + +// 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 ItemVarStoreInstancer &instancer) 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, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && paint.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c) const + { + TRACE_PAINT (this); + c->funcs->push_inverse_root_transform (c->data, c->font); + c->funcs->push_clip_glyph (c->data, gid, c->font); + c->funcs->push_root_transform (c->data, c->font); + c->recurse (this+paint); + c->funcs->pop_transform (c->data); + c->funcs->pop_clip (c->data); + c->funcs->pop_transform (c->data); + } + + 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 ItemVarStoreInstancer &instancer HB_UNUSED) 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)); + } + + inline void paint_glyph (hb_paint_context_t *c) const; + + 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 ItemVarStoreInstancer &instancer) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + if (!out->transform.serialize_subset (c, transform, this, instancer)) return_trace (false); + if (format == 13 && c->plan->all_axes_pinned) + out->format = 12; + return_trace (out->src.serialize_subset (c, src, this, instancer)); + } + + 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)); + } + + void paint_glyph (hb_paint_context_t *c) const + { + TRACE_PAINT (this); + (this+transform).paint_glyph (c); + c->recurse (this+src); + c->funcs->pop_transform (c->data); + } + + 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 ItemVarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->dx = dx + (int) roundf (instancer (varIdxBase, 0)); + out->dy = dy + (int) roundf (instancer (varIdxBase, 1)); + } + + if (format == 15 && c->plan->all_axes_pinned) + out->format = 14; + + return_trace (out->src.serialize_subset (c, src, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && src.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + TRACE_PAINT (this); + float ddx = dx + c->instancer (varIdxBase, 0); + float ddy = dy + c->instancer (varIdxBase, 1); + + bool p1 = c->funcs->push_translate (c->data, ddx, ddy); + c->recurse (this+src); + if (p1) c->funcs->pop_transform (c->data); + } + + 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 ItemVarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->scaleX.set_float (scaleX.to_float (instancer (varIdxBase, 0))); + out->scaleY.set_float (scaleY.to_float (instancer (varIdxBase, 1))); + } + + if (format == 17 && c->plan->all_axes_pinned) + out->format = 16; + + return_trace (out->src.serialize_subset (c, src, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && src.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + TRACE_PAINT (this); + float sx = scaleX.to_float (c->instancer (varIdxBase, 0)); + float sy = scaleY.to_float (c->instancer (varIdxBase, 1)); + + bool p1 = c->funcs->push_scale (c->data, sx, sy); + c->recurse (this+src); + if (p1) c->funcs->pop_transform (c->data); + } + + 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 ItemVarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->scaleX.set_float (scaleX.to_float (instancer (varIdxBase, 0))); + out->scaleY.set_float (scaleY.to_float (instancer (varIdxBase, 1))); + out->centerX = centerX + (int) roundf (instancer (varIdxBase, 2)); + out->centerY = centerY + (int) roundf (instancer (varIdxBase, 3)); + } + + if (format == 19 && c->plan->all_axes_pinned) + out->format = 18; + + return_trace (out->src.serialize_subset (c, src, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && src.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + TRACE_PAINT (this); + float sx = scaleX.to_float (c->instancer (varIdxBase, 0)); + float sy = scaleY.to_float (c->instancer (varIdxBase, 1)); + float tCenterX = centerX + c->instancer (varIdxBase, 2); + float tCenterY = centerY + c->instancer (varIdxBase, 3); + + bool p1 = c->funcs->push_translate (c->data, +tCenterX, +tCenterY); + bool p2 = c->funcs->push_scale (c->data, sx, sy); + bool p3 = c->funcs->push_translate (c->data, -tCenterX, -tCenterY); + c->recurse (this+src); + if (p3) c->funcs->pop_transform (c->data); + if (p2) c->funcs->pop_transform (c->data); + if (p1) c->funcs->pop_transform (c->data); + } + + 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 ItemVarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + out->scale.set_float (scale.to_float (instancer (varIdxBase, 0))); + + if (format == 21 && c->plan->all_axes_pinned) + out->format = 20; + + return_trace (out->src.serialize_subset (c, src, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && src.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + TRACE_PAINT (this); + float s = scale.to_float (c->instancer (varIdxBase, 0)); + + bool p1 = c->funcs->push_scale (c->data, s, s); + c->recurse (this+src); + if (p1) c->funcs->pop_transform (c->data); + } + + 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 ItemVarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->scale.set_float (scale.to_float (instancer (varIdxBase, 0))); + out->centerX = centerX + (int) roundf (instancer (varIdxBase, 1)); + out->centerY = centerY + (int) roundf (instancer (varIdxBase, 2)); + } + + if (format == 23 && c->plan->all_axes_pinned) + out->format = 22; + + return_trace (out->src.serialize_subset (c, src, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && src.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + TRACE_PAINT (this); + float s = scale.to_float (c->instancer (varIdxBase, 0)); + float tCenterX = centerX + c->instancer (varIdxBase, 1); + float tCenterY = centerY + c->instancer (varIdxBase, 2); + + bool p1 = c->funcs->push_translate (c->data, +tCenterX, +tCenterY); + bool p2 = c->funcs->push_scale (c->data, s, s); + bool p3 = c->funcs->push_translate (c->data, -tCenterX, -tCenterY); + c->recurse (this+src); + if (p3) c->funcs->pop_transform (c->data); + if (p2) c->funcs->pop_transform (c->data); + if (p1) c->funcs->pop_transform (c->data); + } + + 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 ItemVarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + out->angle.set_float (angle.to_float (instancer (varIdxBase, 0))); + + if (format == 25 && c->plan->all_axes_pinned) + out->format = 24; + + return_trace (out->src.serialize_subset (c, src, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && src.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + TRACE_PAINT (this); + float a = angle.to_float (c->instancer (varIdxBase, 0)); + + bool p1 = c->funcs->push_rotate (c->data, a); + c->recurse (this+src); + if (p1) c->funcs->pop_transform (c->data); + } + + 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 ItemVarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->angle.set_float (angle.to_float (instancer (varIdxBase, 0))); + out->centerX = centerX + (int) roundf (instancer (varIdxBase, 1)); + out->centerY = centerY + (int) roundf (instancer (varIdxBase, 2)); + } + + if (format ==27 && c->plan->all_axes_pinned) + out->format = 26; + + return_trace (out->src.serialize_subset (c, src, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && src.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + TRACE_PAINT (this); + float a = angle.to_float (c->instancer (varIdxBase, 0)); + float tCenterX = centerX + c->instancer (varIdxBase, 1); + float tCenterY = centerY + c->instancer (varIdxBase, 2); + + bool p1 = c->funcs->push_translate (c->data, +tCenterX, +tCenterY); + bool p2 = c->funcs->push_rotate (c->data, a); + bool p3 = c->funcs->push_translate (c->data, -tCenterX, -tCenterY); + c->recurse (this+src); + if (p3) c->funcs->pop_transform (c->data); + if (p2) c->funcs->pop_transform (c->data); + if (p1) c->funcs->pop_transform (c->data); + } + + 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 ItemVarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->xSkewAngle.set_float (xSkewAngle.to_float (instancer (varIdxBase, 0))); + out->ySkewAngle.set_float (ySkewAngle.to_float (instancer (varIdxBase, 1))); + } + + if (format == 29 && c->plan->all_axes_pinned) + out->format = 28; + + return_trace (out->src.serialize_subset (c, src, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && src.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + TRACE_PAINT (this); + float sx = xSkewAngle.to_float(c->instancer (varIdxBase, 0)); + float sy = ySkewAngle.to_float(c->instancer (varIdxBase, 1)); + + bool p1 = c->funcs->push_skew (c->data, sx, sy); + c->recurse (this+src); + if (p1) c->funcs->pop_transform (c->data); + } + + 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 ItemVarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->xSkewAngle.set_float (xSkewAngle.to_float (instancer (varIdxBase, 0))); + out->ySkewAngle.set_float (ySkewAngle.to_float (instancer (varIdxBase, 1))); + out->centerX = centerX + (int) roundf (instancer (varIdxBase, 2)); + out->centerY = centerY + (int) roundf (instancer (varIdxBase, 3)); + } + + if (format == 31 && c->plan->all_axes_pinned) + out->format = 30; + + return_trace (out->src.serialize_subset (c, src, this, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && src.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c, uint32_t varIdxBase) const + { + TRACE_PAINT (this); + float sx = xSkewAngle.to_float(c->instancer (varIdxBase, 0)); + float sy = ySkewAngle.to_float(c->instancer (varIdxBase, 1)); + float tCenterX = centerX + c->instancer (varIdxBase, 2); + float tCenterY = centerY + c->instancer (varIdxBase, 3); + + bool p1 = c->funcs->push_translate (c->data, +tCenterX, +tCenterY); + bool p2 = c->funcs->push_skew (c->data, sx, sy); + bool p3 = c->funcs->push_translate (c->data, -tCenterX, -tCenterY); + c->recurse (this+src); + if (p3) c->funcs->pop_transform (c->data); + if (p2) c->funcs->pop_transform (c->data); + if (p1) c->funcs->pop_transform (c->data); + } + + 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 ItemVarStoreInstancer &instancer) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (this); + if (unlikely (!out)) return_trace (false); + + bool ret = false; + ret |= out->src.serialize_subset (c, src, this, instancer); + ret |= out->backdrop.serialize_subset (c, backdrop, this, instancer); + return_trace (ret); + } + + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && + c->check_ops (this->min_size) && // PainComposite can get exponential + src.sanitize (c, this) && + backdrop.sanitize (c, this)); + } + + void paint_glyph (hb_paint_context_t *c) const + { + TRACE_PAINT (this); + c->recurse (this+backdrop); + c->funcs->push_group (c->data); + c->recurse (this+src); + c->funcs->pop_group (c->data, (hb_paint_composite_mode_t) (int) mode); + } + + 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 ClipBoxData +{ + int xMin, yMin, xMax, yMax; +}; + +struct ClipBoxFormat1 +{ + bool sanitize (hb_sanitize_context_t *c) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this)); + } + + void get_clip_box (ClipBoxData &clip_box, const ItemVarStoreInstancer &instancer HB_UNUSED) const + { + clip_box.xMin = xMin; + clip_box.yMin = yMin; + clip_box.xMax = xMax; + clip_box.yMax = yMax; + } + + bool subset (hb_subset_context_t *c, + const ItemVarStoreInstancer &instancer, + uint32_t varIdxBase) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (*this); + if (unlikely (!out)) return_trace (false); + + if (instancer && !c->plan->pinned_at_default && varIdxBase != VarIdx::NO_VARIATION) + { + out->xMin = xMin + (int) roundf (instancer (varIdxBase, 0)); + out->yMin = yMin + (int) roundf (instancer (varIdxBase, 1)); + out->xMax = xMax + (int) roundf (instancer (varIdxBase, 2)); + out->yMax = yMax + (int) roundf (instancer (varIdxBase, 3)); + } + + if (format == 2 && c->plan->all_axes_pinned) + out->format = 1; + + return_trace (true); + } + + 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> +{ + void get_clip_box (ClipBoxData &clip_box, const ItemVarStoreInstancer &instancer) const + { + value.get_clip_box(clip_box, instancer); + if (instancer) + { + clip_box.xMin += roundf (instancer (varIdxBase, 0)); + clip_box.yMin += roundf (instancer (varIdxBase, 1)); + clip_box.xMax += roundf (instancer (varIdxBase, 2)); + clip_box.yMax += roundf (instancer (varIdxBase, 3)); + } + } +}; + +struct ClipBox +{ + bool subset (hb_subset_context_t *c, + const ItemVarStoreInstancer &instancer) const + { + TRACE_SUBSET (this); + switch (u.format) { + case 1: return_trace (u.format1.subset (c, instancer, VarIdx::NO_VARIATION)); + case 2: return_trace (u.format2.subset (c, instancer)); + default:return_trace (c->default_return_value ()); + } + } + + template <typename context_t, typename ...Ts> + typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const + { + if (unlikely (!c->may_dispatch (this, &u.format))) return c->no_dispatch_return_value (); + TRACE_DISPATCH (this, u.format); + 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 ()); + } + } + + bool get_extents (hb_glyph_extents_t *extents, + const ItemVarStoreInstancer &instancer) const + { + ClipBoxData clip_box; + switch (u.format) { + case 1: + u.format1.get_clip_box (clip_box, instancer); + break; + case 2: + u.format2.get_clip_box (clip_box, instancer); + break; + default: + return false; + } + + extents->x_bearing = clip_box.xMin; + extents->y_bearing = clip_box.yMax; + extents->width = clip_box.xMax - clip_box.xMin; + extents->height = clip_box.yMin - clip_box.yMax; + return true; + } + + protected: + union { + HBUINT8 format; /* Format identifier */ + ClipBoxFormat1 format1; + ClipBoxFormat2 format2; + } u; +}; + +struct ClipRecord +{ + int cmp (hb_codepoint_t g) const + { return g < startGlyphID ? -1 : g <= endGlyphID ? 0 : +1; } + + bool subset (hb_subset_context_t *c, + const void *base, + const ItemVarStoreInstancer &instancer) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->embed (*this); + if (unlikely (!out)) return_trace (false); + + return_trace (out->clipBox.serialize_subset (c, clipBox, base, instancer)); + } + + bool sanitize (hb_sanitize_context_t *c, const void *base) const + { + TRACE_SANITIZE (this); + return_trace (c->check_struct (this) && clipBox.sanitize (c, base)); + } + + bool get_extents (hb_glyph_extents_t *extents, + const void *base, + const ItemVarStoreInstancer &instancer) const + { + return (base+clipBox).get_extents (extents, instancer); + } + + 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); +}; +DECLARE_NULL_NAMESPACE_BYTES (OT, ClipRecord); + +struct ClipList +{ + unsigned serialize_clip_records (hb_subset_context_t *c, + const ItemVarStoreInstancer &instancer, + 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 (!record.subset (c, this, instancer)) 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 (!record.subset (c, this, instancer)) return_trace (0); + count++; + } + return_trace (count); + } + + bool subset (hb_subset_context_t *c, + const ItemVarStoreInstancer &instancer) 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, instancer, 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); + // TODO Make a formatted struct! + return_trace (c->check_struct (this) && clips.sanitize (c, this)); + } + + bool + get_extents (hb_codepoint_t gid, + hb_glyph_extents_t *extents, + const ItemVarStoreInstancer &instancer) const + { + auto *rec = clips.as_array ().bsearch (gid); + if (rec) + { + rec->get_extents (extents, this, instancer); + return true; + } + return false; + } + + HBUINT8 format; // Set to 1. + SortedArray32Of<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_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 + { + if (unlikely (!c->may_dispatch (this, &u.format))) return c->no_dispatch_return_value (); + TRACE_DISPATCH (this, u.format); + 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; + NoVariable<PaintSolid> paintformat2; + Variable<PaintSolid> paintformat3; + NoVariable<PaintLinearGradient<NoVariable>> paintformat4; + Variable<PaintLinearGradient<Variable>> paintformat5; + NoVariable<PaintRadialGradient<NoVariable>> paintformat6; + Variable<PaintRadialGradient<Variable>> paintformat7; + NoVariable<PaintSweepGradient<NoVariable>> paintformat8; + Variable<PaintSweepGradient<Variable>> paintformat9; + PaintGlyph paintformat10; + PaintColrGlyph paintformat11; + PaintTransform<NoVariable> paintformat12; + PaintTransform<Variable> paintformat13; + NoVariable<PaintTranslate> paintformat14; + Variable<PaintTranslate> paintformat15; + NoVariable<PaintScale> paintformat16; + Variable<PaintScale> paintformat17; + NoVariable<PaintScaleAroundCenter> paintformat18; + Variable<PaintScaleAroundCenter> paintformat19; + NoVariable<PaintScaleUniform> paintformat20; + Variable<PaintScaleUniform> paintformat21; + NoVariable<PaintScaleUniformAroundCenter> paintformat22; + Variable<PaintScaleUniformAroundCenter> paintformat23; + NoVariable<PaintRotate> paintformat24; + Variable<PaintRotate> paintformat25; + NoVariable<PaintRotateAroundCenter> paintformat26; + Variable<PaintRotateAroundCenter> paintformat27; + NoVariable<PaintSkew> paintformat28; + Variable<PaintSkew> paintformat29; + NoVariable<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 ItemVarStoreInstancer &instancer) 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, instancer)); + } + + 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 ItemVarStoreInstancer &instancer) 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, instancer)) 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 ItemVarStoreInstancer &instancer) const + { + TRACE_SUBSET (this); + auto *out = c->serializer->start_embed (this); + if (unlikely (!c->serializer->extend_min (out))) return_trace (false); + + bool ret = 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)) return_trace (false); + ret |= o->serialize_subset (c, _.second, this, instancer); + } + return_trace (ret); + } + + 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_v0_data () const { return numBaseGlyphs; } + bool has_v1_data () const + { + if (version != 1) + return false; + hb_barrier (); + + return (this+baseGlyphList).len > 0; + } + + 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_barrier (); + + 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) && + hb_barrier () && + (this+baseGlyphsZ).sanitize (c, numBaseGlyphs) && + (this+layersZ).sanitize (c, numLayers) && + (version == 0 || + (hb_barrier () && + 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); + + auto *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); + + ItemVarStoreInstancer instancer (varStore ? &(this+varStore) : nullptr, + varIdxMap ? &(this+varIdxMap) : nullptr, + c->plan->normalized_coords.as_array ()); + + if (!colr_prime->baseGlyphList.serialize_subset (c, baseGlyphList, this, instancer)) + { + 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, instancer); + colr_prime->clipList.serialize_subset (c, clipList, this, instancer); + if (!varStore || c->plan->all_axes_pinned) + return_trace (true); + + colr_prime->varIdxMap.serialize_copy (c->serializer, varIdxMap, this); + colr_prime->varStore.serialize_copy (c->serializer, varStore, this); + return_trace (true); + } + + const Paint *get_base_glyph_paint (hb_codepoint_t glyph) const + { + const BaseGlyphList &baseglyph_paintrecords = this+baseGlyphList; + const BaseGlyphPaintRecord* record = get_base_glyph_paintrecord (glyph); + if (record) + { + const Paint &paint = &baseglyph_paintrecords+record->paint; + return &paint; + } + else + return nullptr; + } + +#ifndef HB_NO_PAINT + bool + get_extents (hb_font_t *font, hb_codepoint_t glyph, hb_glyph_extents_t *extents) const + { + if (version != 1) + return false; + + ItemVarStoreInstancer instancer (&(this+varStore), + &(this+varIdxMap), + hb_array (font->coords, font->num_coords)); + + if (get_clip (glyph, extents, instancer)) + { + font->scale_glyph_extents (extents); + return true; + } + + auto *extents_funcs = hb_paint_extents_get_funcs (); + hb_paint_extents_context_t extents_data; + bool ret = paint_glyph (font, glyph, extents_funcs, &extents_data, 0, HB_COLOR(0,0,0,0)); + + hb_extents_t e = extents_data.get_extents (); + if (e.is_void ()) + { + extents->x_bearing = 0; + extents->y_bearing = 0; + extents->width = 0; + extents->height = 0; + } + else + { + extents->x_bearing = e.xmin; + extents->y_bearing = e.ymax; + extents->width = e.xmax - e.xmin; + extents->height = e.ymin - e.ymax; + } + + return ret; + } +#endif + + bool + has_paint_for_glyph (hb_codepoint_t glyph) const + { + if (version == 1) + { + hb_barrier (); + + const Paint *paint = get_base_glyph_paint (glyph); + + return paint != nullptr; + } + + return false; + } + + bool get_clip (hb_codepoint_t glyph, + hb_glyph_extents_t *extents, + const ItemVarStoreInstancer instancer) const + { + return (this+clipList).get_extents (glyph, + extents, + instancer); + } + +#ifndef HB_NO_PAINT + bool + paint_glyph (hb_font_t *font, hb_codepoint_t glyph, hb_paint_funcs_t *funcs, void *data, unsigned int palette_index, hb_color_t foreground, bool clip = true) const + { + ItemVarStoreInstancer instancer (&(this+varStore), + &(this+varIdxMap), + hb_array (font->coords, font->num_coords)); + hb_paint_context_t c (this, funcs, data, font, palette_index, foreground, instancer); + c.current_glyphs.add (glyph); + + if (version == 1) + { + hb_barrier (); + + const Paint *paint = get_base_glyph_paint (glyph); + if (paint) + { + // COLRv1 glyph + + ItemVarStoreInstancer instancer (&(this+varStore), + &(this+varIdxMap), + hb_array (font->coords, font->num_coords)); + + bool is_bounded = true; + if (clip) + { + hb_glyph_extents_t extents; + if (get_clip (glyph, &extents, instancer)) + { + font->scale_glyph_extents (&extents); + c.funcs->push_clip_rectangle (c.data, + extents.x_bearing, + extents.y_bearing + extents.height, + extents.x_bearing + extents.width, + extents.y_bearing); + } + else + { + auto *extents_funcs = hb_paint_extents_get_funcs (); + hb_paint_extents_context_t extents_data; + + paint_glyph (font, glyph, + extents_funcs, &extents_data, + palette_index, foreground, + false); + + hb_extents_t extents = extents_data.get_extents (); + is_bounded = extents_data.is_bounded (); + + c.funcs->push_clip_rectangle (c.data, + extents.xmin, + extents.ymin, + extents.xmax, + extents.ymax); + } + } + + c.funcs->push_root_transform (c.data, font); + + if (is_bounded) + c.recurse (*paint); + + c.funcs->pop_transform (c.data); + + if (clip) + c.funcs->pop_clip (c.data); + + return true; + } + } + + const BaseGlyphRecord *record = get_base_glyph_record (glyph); + if (record && ((hb_codepoint_t) record->glyphId == glyph)) + { + // COLRv0 glyph + for (const auto &r : (this+layersZ).as_array (numLayers) + .sub_array (record->firstLayerIdx, record->numLayers)) + { + hb_bool_t is_foreground; + hb_color_t color = c.get_color (r.colorIdx, 1., &is_foreground); + c.funcs->push_clip_glyph (c.data, r.glyphId, c.font); + c.funcs->color (c.data, is_foreground, color); + c.funcs->pop_clip (c.data); + } + + return true; + } + + return false; + } +#endif + + 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<ItemVariationStore> varStore; + public: + DEFINE_SIZE_MIN (14); +}; + +struct COLR_accelerator_t : COLR::accelerator_t { + COLR_accelerator_t (hb_face_t *face) : COLR::accelerator_t (face) {} +}; + +void +hb_paint_context_t::recurse (const Paint &paint) +{ + if (unlikely (depth_left <= 0 || edge_count <= 0)) return; + depth_left--; + edge_count--; + paint.dispatch (this); + depth_left++; +} + +void PaintColrLayers::paint_glyph (hb_paint_context_t *c) const +{ + TRACE_PAINT (this); + const LayerList &paint_offset_lists = c->get_colr_table ()->get_layerList (); + for (unsigned i = firstLayerIndex; i < firstLayerIndex + numLayers; i++) + { + if (unlikely (c->current_layers.has (i))) + continue; + + c->current_layers.add (i); + + const Paint &paint = paint_offset_lists.get_paint (i); + c->funcs->push_group (c->data); + c->recurse (paint); + c->funcs->pop_group (c->data, HB_PAINT_COMPOSITE_MODE_SRC_OVER); + + c->current_layers.del (i); + } +} + +void PaintColrGlyph::paint_glyph (hb_paint_context_t *c) const +{ + TRACE_PAINT (this); + + if (unlikely (c->current_glyphs.has (gid))) + return; + + c->current_glyphs.add (gid); + + c->funcs->push_inverse_root_transform (c->data, c->font); + if (c->funcs->color_glyph (c->data, gid, c->font)) + { + c->funcs->pop_transform (c->data); + c->current_glyphs.del (gid); + return; + } + c->funcs->pop_transform (c->data); + + const COLR *colr_table = c->get_colr_table (); + const Paint *paint = colr_table->get_base_glyph_paint (gid); + + hb_glyph_extents_t extents = {0}; + bool has_clip_box = colr_table->get_clip (gid, &extents, c->instancer); + + if (has_clip_box) + c->funcs->push_clip_rectangle (c->data, + extents.x_bearing, + extents.y_bearing + extents.height, + extents.x_bearing + extents.width, + extents.y_bearing); + + if (paint) + c->recurse (*paint); + + if (has_clip_box) + c->funcs->pop_clip (c->data); + + c->current_glyphs.del (gid); +} + +} /* namespace OT */ + +#endif /* OT_COLOR_COLR_COLR_HH */ |