| /* |
| * Copyright 2020 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "include/effects/SkImageFilters.h" |
| #include "modules/svg/include/SkSVGAttributeParser.h" |
| #include "modules/svg/include/SkSVGFeMorphology.h" |
| #include "modules/svg/include/SkSVGFilterContext.h" |
| #include "modules/svg/include/SkSVGRenderContext.h" |
| #include "modules/svg/include/SkSVGValue.h" |
| |
| bool SkSVGFeMorphology::parseAndSetAttribute(const char* name, const char* value) { |
| return INHERITED::parseAndSetAttribute(name, value) || |
| this->setOperator(SkSVGAttributeParser::parse<SkSVGFeMorphology::Operator>( |
| "operator", name, value)) || |
| this->setRadius(SkSVGAttributeParser::parse<SkSVGFeMorphology::Radius>( |
| "radius", name, value)); |
| } |
| |
| sk_sp<SkImageFilter> SkSVGFeMorphology::onMakeImageFilter(const SkSVGRenderContext& ctx, |
| const SkSVGFilterContext& fctx) const { |
| const SkRect cropRect = this->resolveFilterSubregion(ctx, fctx); |
| const SkSVGColorspace colorspace = this->resolveColorspace(ctx, fctx); |
| sk_sp<SkImageFilter> input = fctx.resolveInput(ctx, this->getIn(), colorspace); |
| |
| SkScalar rx = fRadius.fX; |
| SkScalar ry = fRadius.fY; |
| if (fctx.primitiveUnits().type() == SkSVGObjectBoundingBoxUnits::Type::kObjectBoundingBox) { |
| SkASSERT(ctx.node()); |
| const SkRect objBounds = ctx.node()->objectBoundingBox(ctx); |
| rx *= objBounds.width(); |
| ry *= objBounds.height(); |
| } |
| |
| switch (fOperator) { |
| case Operator::kErode: |
| return SkImageFilters::Erode(rx, ry, input, cropRect); |
| case Operator::kDilate: |
| return SkImageFilters::Dilate(rx, ry, input, cropRect); |
| } |
| |
| SkUNREACHABLE; |
| } |
| |
| template <> |
| bool SkSVGAttributeParser::parse<SkSVGFeMorphology::Operator>(SkSVGFeMorphology::Operator* op) { |
| static constexpr std::tuple<const char*, SkSVGFeMorphology::Operator> gMap[] = { |
| { "dilate", SkSVGFeMorphology::Operator::kDilate }, |
| { "erode" , SkSVGFeMorphology::Operator::kErode }, |
| }; |
| |
| return this->parseEnumMap(gMap, op) && this->parseEOSToken(); |
| } |
| |
| template <> |
| bool SkSVGAttributeParser::parse<SkSVGFeMorphology::Radius>(SkSVGFeMorphology::Radius* radius) { |
| std::vector<SkSVGNumberType> values; |
| if (!this->parse(&values)) { |
| return false; |
| } |
| |
| radius->fX = values[0]; |
| radius->fY = values.size() > 1 ? values[1] : values[0]; |
| return true; |
| } |