#include <SkSVGFeDisplacementMap.h>

Inheritance diagram for SkSVGFeDisplacementMap:

Public Types
using	ChannelSelector = SkColorChannel

Public Member Functions
SkSVGColorspace	resolveColorspace (const SkSVGRenderContext &, const SkSVGFilterContext &) const final

Public Member Functions inherited from SkSVGFe
sk_sp< SkImageFilter >	makeImageFilter (const SkSVGRenderContext &ctx, const SkSVGFilterContext &fctx) const

SkRect	resolveFilterSubregion (const SkSVGRenderContext &, const SkSVGFilterContext &) const

void	applyProperties (SkSVGRenderContext *) const

Public Member Functions inherited from SkSVGContainer
void	appendChild (sk_sp< SkSVGNode >) override

Public Member Functions inherited from SkSVGTransformableNode
void	setTransform (const SkSVGTransformType &t)

Public Member Functions inherited from SkSVGNode
	~SkSVGNode () override

SkSVGTag	tag () const

void	render (const SkSVGRenderContext &) const

bool	asPaint (const SkSVGRenderContext &, SkPaint *) const

SkPath	asPath (const SkSVGRenderContext &) const

SkRect	objectBoundingBox (const SkSVGRenderContext &) const

void	setAttribute (SkSVGAttribute, const SkSVGValue &)

bool	setAttribute (const char attributeName, const char attributeValue)

Public Member Functions inherited from SkRefCntBase
	SkRefCntBase ()

virtual	~SkRefCntBase ()

bool	unique () const

void	ref () const

void	unref () const

Static Public Member Functions
static sk_sp< SkSVGFeDisplacementMap >	Make ()

Static Public Member Functions inherited from SkSVGFe
static bool	IsFilterEffect (const sk_sp< SkSVGNode > &node)

Protected Member Functions
sk_sp< SkImageFilter >	onMakeImageFilter (const SkSVGRenderContext &, const SkSVGFilterContext &) const override

std::vector< SkSVGFeInputType >	getInputs () const override

bool	parseAndSetAttribute (const char , const char ) override

Protected Member Functions inherited from SkSVGFe
	SkSVGFe (SkSVGTag t)

Protected Member Functions inherited from SkSVGHiddenContainer
	SkSVGHiddenContainer (SkSVGTag t)

void	onRender (const SkSVGRenderContext &) const final

Protected Member Functions inherited from SkSVGContainer
	SkSVGContainer (SkSVGTag)

SkPath	onAsPath (const SkSVGRenderContext &) const override

SkRect	onObjectBoundingBox (const SkSVGRenderContext &) const override

bool	hasChildren () const final

Protected Member Functions inherited from SkSVGTransformableNode
	SkSVGTransformableNode (SkSVGTag)

bool	onPrepareToRender (SkSVGRenderContext *) const override

void	onSetAttribute (SkSVGAttribute, const SkSVGValue &) override

void	mapToParent (SkPath *) const

void	mapToParent (SkRect *) const

Protected Member Functions inherited from SkSVGNode
	SkSVGNode (SkSVGTag)

virtual bool	onAsPaint (const SkSVGRenderContext &, SkPaint *) const

Additional Inherited Members
Static Protected Member Functions inherited from SkSVGNode
static SkMatrix	ComputeViewboxMatrix (const SkRect &, const SkRect &, SkSVGPreserveAspectRatio)

Protected Attributes inherited from SkSVGContainer
skia_private::STArray< 1, sk_sp< SkSVGNode >, true >	fChildren

Detailed Description

Definition at line 14 of file SkSVGFeDisplacementMap.h.

Member Typedef Documentation

◆ ChannelSelector

using SkSVGFeDisplacementMap::ChannelSelector = SkColorChannel

Definition at line 16 of file SkSVGFeDisplacementMap.h.

Member Function Documentation

◆ getInputs()

std::vector< SkSVGFeInputType > SkSVGFeDisplacementMap::getInputs ( ) const

inlineoverrideprotectedvirtual

Implements SkSVGFe.

Definition at line 34 of file SkSVGFeDisplacementMap.h.

                                                           {
        return {this->getIn(), this->getIn2()};
    }

◆ Make()

static sk_sp< SkSVGFeDisplacementMap > SkSVGFeDisplacementMap::Make ( )

inlinestatic

Definition at line 18 of file SkSVGFeDisplacementMap.h.

                                                {
        return sk_sp<SkSVGFeDisplacementMap>(new SkSVGFeDisplacementMap());
    }

◆ onMakeImageFilter()

sk_sp< SkImageFilter > SkSVGFeDisplacementMap::onMakeImageFilter	(	const SkSVGRenderContext &	ctx,
		const SkSVGFilterContext &	fctx
	)		const

overrideprotectedvirtual

Implements SkSVGFe.

Definition at line 27 of file SkSVGFeDisplacementMap.cpp.

                                                                             {
    const SkRect cropRect = this->resolveFilterSubregion(ctx, fctx);
    const SkSVGColorspace colorspace = this->resolveColorspace(ctx, fctx);
 
    // According to spec https://www.w3.org/TR/SVG11/filters.html#feDisplacementMapElement,
    // the 'in' source image must remain in its current colorspace.
    sk_sp<SkImageFilter> in = fctx.resolveInput(ctx, this->getIn());
    sk_sp<SkImageFilter> in2 = fctx.resolveInput(ctx, this->getIn2(), colorspace);
 
    SkScalar scale = fScale;
    if (fctx.primitiveUnits().type() == SkSVGObjectBoundingBoxUnits::Type::kObjectBoundingBox) {
        const auto obbt = ctx.transformForCurrentOBB(fctx.primitiveUnits());
        scale = SkSVGLengthContext({obbt.scale.x, obbt.scale.y})
                    .resolve(SkSVGLength(scale, SkSVGLength::Unit::kPercentage),
                             SkSVGLengthContext::LengthType::kOther);
    }
 
    return SkImageFilters::DisplacementMap(
            fXChannelSelector, fYChannelSelector, scale, in2, in, cropRect);
}

◆ parseAndSetAttribute()

bool SkSVGFeDisplacementMap::parseAndSetAttribute	(	const char *	name,
		const char *	value
	)

overrideprotectedvirtual

Reimplemented from SkSVGFe.

Definition at line 15 of file SkSVGFeDisplacementMap.cpp.

                                                                                     {
    return INHERITED::parseAndSetAttribute(name, value) ||
           this->setIn2(SkSVGAttributeParser::parse<SkSVGFeInputType>("in2", name, value)) ||
           this->setXChannelSelector(
                   SkSVGAttributeParser::parse<SkSVGFeDisplacementMap::ChannelSelector>(
                           "xChannelSelector", name, value)) ||
           this->setYChannelSelector(
                   SkSVGAttributeParser::parse<SkSVGFeDisplacementMap::ChannelSelector>(
                           "yChannelSelector", name, value)) ||
           this->setScale(SkSVGAttributeParser::parse<SkSVGNumberType>("scale", name, value));
}

◆ resolveColorspace()

SkSVGColorspace SkSVGFeDisplacementMap::resolveColorspace	(	const SkSVGRenderContext &	ctx,
		const SkSVGFilterContext &
	)		const

finalvirtual

Resolves the colorspace within which this filter effect should be applied. Spec: https://www.w3.org/TR/SVG11/painting.html#ColorInterpolationProperties 'color-interpolation-filters' property.

Reimplemented from SkSVGFe.

Definition at line 49 of file SkSVGFeDisplacementMap.cpp.

                                                                                                {
    // According to spec https://www.w3.org/TR/SVG11/filters.html#feDisplacementMapElement,
    // the 'in' source image must remain in its current colorspace, which means the colorspace of
    // this FE node is the same as the input.
    return fctx.resolveInputColorspace(ctx, this->getIn());
}

The documentation for this class was generated from the following files:

third_party/skia/modules/svg/include/SkSVGFeDisplacementMap.h
third_party/skia/modules/svg/src/SkSVGFeDisplacementMap.cpp

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Additional Inherited Members