blob: 9bf1e30eab54d0a58c878fdbe47ceff9f91c7961 [file] [log] [blame]
/*
* 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/SkSVGFeBlend.h"
#include "modules/svg/include/SkSVGFilterContext.h"
#include "modules/svg/include/SkSVGRenderContext.h"
#include "modules/svg/include/SkSVGValue.h"
bool SkSVGFeBlend::parseAndSetAttribute(const char* name, const char* value) {
return INHERITED::parseAndSetAttribute(name, value) ||
this->setIn2(SkSVGAttributeParser::parse<SkSVGFeInputType>("in2", name, value)) ||
this->setMode(SkSVGAttributeParser::parse<SkSVGFeBlend::Mode>("mode", name, value));
}
static SkBlendMode GetBlendMode(SkSVGFeBlend::Mode mode) {
switch (mode) {
case SkSVGFeBlend::Mode::kNormal:
return SkBlendMode::kSrcOver;
case SkSVGFeBlend::Mode::kMultiply:
return SkBlendMode::kMultiply;
case SkSVGFeBlend::Mode::kScreen:
return SkBlendMode::kScreen;
case SkSVGFeBlend::Mode::kDarken:
return SkBlendMode::kDarken;
case SkSVGFeBlend::Mode::kLighten:
return SkBlendMode::kLighten;
}
SkUNREACHABLE;
}
sk_sp<SkImageFilter> SkSVGFeBlend::onMakeImageFilter(const SkSVGRenderContext& ctx,
const SkSVGFilterContext& fctx) const {
const SkRect cropRect = this->resolveFilterSubregion(ctx, fctx);
const SkBlendMode blendMode = GetBlendMode(this->getMode());
const SkSVGColorspace colorspace = this->resolveColorspace(ctx, fctx);
const sk_sp<SkImageFilter> background = fctx.resolveInput(ctx, fIn2, colorspace);
const sk_sp<SkImageFilter> foreground = fctx.resolveInput(ctx, this->getIn(), colorspace);
return SkImageFilters::Blend(blendMode, background, foreground, cropRect);
}
template <>
bool SkSVGAttributeParser::parse<SkSVGFeBlend::Mode>(
SkSVGFeBlend::Mode* mode) {
static constexpr std::tuple<const char*, SkSVGFeBlend::Mode> gMap[] = {
{ "normal" , SkSVGFeBlend::Mode::kNormal },
{ "multiply", SkSVGFeBlend::Mode::kMultiply },
{ "screen" , SkSVGFeBlend::Mode::kScreen },
{ "darken" , SkSVGFeBlend::Mode::kDarken },
{ "lighten" , SkSVGFeBlend::Mode::kLighten },
};
return this->parseEnumMap(gMap, mode) && this->parseEOSToken();
}