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/*
* Copyright 2020 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkSVGFeLighting_DEFINED
#define SkSVGFeLighting_DEFINED
#include "include/core/SkColor.h"
#include "include/core/SkPoint3.h"
#include "include/core/SkRefCnt.h"
#include "include/private/base/SkAPI.h"
#include "modules/svg/include/SkSVGFe.h"
#include "modules/svg/include/SkSVGNode.h"
#include "modules/svg/include/SkSVGTypes.h"
#include "src/base/SkTLazy.h"
#include <vector>
class SkImageFilter;
class SkSVGFeDistantLight;
class SkSVGFePointLight;
class SkSVGFeSpotLight;
class SkSVGFilterContext;
class SkSVGRenderContext;
class SK_API SkSVGFeLighting : public SkSVGFe {
public:
struct KernelUnitLength {
SkSVGNumberType fDx;
SkSVGNumberType fDy;
};
SVG_ATTR(SurfaceScale, SkSVGNumberType, 1)
SVG_OPTIONAL_ATTR(KernelUnitLength, KernelUnitLength)
protected:
explicit SkSVGFeLighting(SkSVGTag t) : INHERITED(t) {}
std::vector<SkSVGFeInputType> getInputs() const final { return {this->getIn()}; }
bool parseAndSetAttribute(const char*, const char*) override;
sk_sp<SkImageFilter> onMakeImageFilter(const SkSVGRenderContext&,
const SkSVGFilterContext&) const final;
virtual sk_sp<SkImageFilter> makeDistantLight(const SkSVGRenderContext&,
const SkSVGFilterContext&,
const SkSVGFeDistantLight*) const = 0;
virtual sk_sp<SkImageFilter> makePointLight(const SkSVGRenderContext&,
const SkSVGFilterContext&,
const SkSVGFePointLight*) const = 0;
virtual sk_sp<SkImageFilter> makeSpotLight(const SkSVGRenderContext&,
const SkSVGFilterContext&,
const SkSVGFeSpotLight*) const = 0;
SkColor resolveLightingColor(const SkSVGRenderContext&) const;
SkPoint3 resolveXYZ(const SkSVGRenderContext&,
const SkSVGFilterContext&,
SkSVGNumberType,
SkSVGNumberType,
SkSVGNumberType) const;
private:
using INHERITED = SkSVGFe;
};
class SkSVGFeSpecularLighting final : public SkSVGFeLighting {
public:
static sk_sp<SkSVGFeSpecularLighting> Make() {
return sk_sp<SkSVGFeSpecularLighting>(new SkSVGFeSpecularLighting());
}
SVG_ATTR(SpecularConstant, SkSVGNumberType, 1)
SVG_ATTR(SpecularExponent, SkSVGNumberType, 1)
protected:
bool parseAndSetAttribute(const char*, const char*) override;
sk_sp<SkImageFilter> makeDistantLight(const SkSVGRenderContext&,
const SkSVGFilterContext&,
const SkSVGFeDistantLight*) const final;
sk_sp<SkImageFilter> makePointLight(const SkSVGRenderContext&,
const SkSVGFilterContext&,
const SkSVGFePointLight*) const final;
sk_sp<SkImageFilter> makeSpotLight(const SkSVGRenderContext&,
const SkSVGFilterContext&,
const SkSVGFeSpotLight*) const final;
private:
SkSVGFeSpecularLighting() : INHERITED(SkSVGTag::kFeSpecularLighting) {}
using INHERITED = SkSVGFeLighting;
};
class SkSVGFeDiffuseLighting final : public SkSVGFeLighting {
public:
static sk_sp<SkSVGFeDiffuseLighting> Make() {
return sk_sp<SkSVGFeDiffuseLighting>(new SkSVGFeDiffuseLighting());
}
SVG_ATTR(DiffuseConstant, SkSVGNumberType, 1)
protected:
bool parseAndSetAttribute(const char*, const char*) override;
sk_sp<SkImageFilter> makeDistantLight(const SkSVGRenderContext&,
const SkSVGFilterContext&,
const SkSVGFeDistantLight*) const final;
sk_sp<SkImageFilter> makePointLight(const SkSVGRenderContext&,
const SkSVGFilterContext&,
const SkSVGFePointLight*) const final;
sk_sp<SkImageFilter> makeSpotLight(const SkSVGRenderContext&,
const SkSVGFilterContext&,
const SkSVGFeSpotLight*) const final;
private:
SkSVGFeDiffuseLighting() : INHERITED(SkSVGTag::kFeDiffuseLighting) {}
using INHERITED = SkSVGFeLighting;
};
#endif // SkSVGFeLighting_DEFINED
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