SkSVGUse Class Reference

#include <SkSVGUse.h>

Inheritance diagram for SkSVGUse:

Public Member Functions
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< SkSVGUse >	Make ()

Protected Member Functions
bool	onPrepareToRender (SkSVGRenderContext *) const override
void	onRender (const SkSVGRenderContext &) const override
SkPath	onAsPath (const SkSVGRenderContext &) const override
SkRect	onObjectBoundingBox (const SkSVGRenderContext &) const override
Protected Member Functions inherited from SkSVGTransformableNode
	SkSVGTransformableNode (SkSVGTag)
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
virtual bool	hasChildren () const

Private Member Functions
bool	parseAndSetAttribute (const char *, const char *) override

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

Detailed Description

Implements support for <use> (reference) elements. (https://www.w3.org/TR/SVG11/struct.html#UseElement)

Definition at line 18 of file SkSVGUse.h.

Member Function Documentation

appendChild()

void SkSVGUse::appendChild ( sk_sp< SkSVGNode >  )

overridevirtual

Implements SkSVGNode.

Definition at line 16 of file SkSVGUse.cpp.

                                           {
    SkDebugf("cannot append child nodes to this element.\n");
}

Make()

static sk_sp< SkSVGUse > SkSVGUse::Make ( )

inlinestatic

Definition at line 20 of file SkSVGUse.h.

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

onAsPath()

SkPath SkSVGUse::onAsPath ( const SkSVGRenderContext &  ctx ) const

overrideprotectedvirtual

Implements SkSVGNode.

Definition at line 52 of file SkSVGUse.cpp.

                                                             {
    const auto ref = ctx.findNodeById(fHref);
    if (!ref) {
        return SkPath();
    }
 
    return ref->asPath(ctx);
}

onObjectBoundingBox()

SkRect SkSVGUse::onObjectBoundingBox ( const SkSVGRenderContext &  ctx ) const

overrideprotectedvirtual

Reimplemented from SkSVGNode.

Definition at line 61 of file SkSVGUse.cpp.

                                                                        {
    const auto ref = ctx.findNodeById(fHref);
    if (!ref) {
        return SkRect::MakeEmpty();
    }
 
    const SkSVGLengthContext& lctx = ctx.lengthContext();
    const SkScalar x = lctx.resolve(fX, SkSVGLengthContext::LengthType::kHorizontal);
    const SkScalar y = lctx.resolve(fY, SkSVGLengthContext::LengthType::kVertical);
 
    SkRect bounds = ref->objectBoundingBox(ctx);
    bounds.offset(x, y);
 
    return bounds;
}

onPrepareToRender()

bool SkSVGUse::onPrepareToRender ( SkSVGRenderContext *  ctx ) const

overrideprotectedvirtual

Reimplemented from SkSVGTransformableNode.

Definition at line 27 of file SkSVGUse.cpp.

                                                              {
    if (fHref.iri().isEmpty() || !INHERITED::onPrepareToRender(ctx)) {
        return false;
    }
 
    if (fX.value() || fY.value()) {
        // Restored when the local SkSVGRenderContext leaves scope.
        ctx->saveOnce();
        ctx->canvas()->translate(fX.value(), fY.value());
    }
 
    // TODO: width/height override for <svg> targets.
 
    return true;
}

onRender()

void SkSVGUse::onRender ( const SkSVGRenderContext &  ctx ) const

overrideprotectedvirtual

Implements SkSVGNode.

Definition at line 43 of file SkSVGUse.cpp.

                                                           {
    const auto ref = ctx.findNodeById(fHref);
    if (!ref) {
        return;
    }
 
    ref->render(ctx);
}

parseAndSetAttribute()

bool SkSVGUse::parseAndSetAttribute ( const char *  n, const char *  v  )

overrideprivatevirtual

Reimplemented from SkSVGNode.

Definition at line 20 of file SkSVGUse.cpp.

                                                                {
    return INHERITED::parseAndSetAttribute(n, v) ||
           this->setX(SkSVGAttributeParser::parse<SkSVGLength>("x", n, v)) ||
           this->setY(SkSVGAttributeParser::parse<SkSVGLength>("y", n, v)) ||
           this->setHref(SkSVGAttributeParser::parse<SkSVGIRI>("xlink:href", n, v));
}

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

• third_party/skia/modules/svg/include/SkSVGUse.h
• third_party/skia/modules/svg/src/SkSVGUse.cpp