sksg::OffsetEffect Class Reference

#include <SkSGGeometryEffect.h>

Inheritance diagram for sksg::OffsetEffect:

Static Public Member Functions
static sk_sp< OffsetEffect >	Make (sk_sp< GeometryNode > child)

Private Member Functions
SkPath	onRevalidateEffect (const sk_sp< GeometryNode > &) override

Additional Inherited Members
Public Member Functions inherited from sksg::GeometryNode
void	clip (SkCanvas *, bool antiAlias) const
void	draw (SkCanvas *, const SkPaint &) const
bool	contains (const SkPoint &) const
SkPath	asPath () const
Public Member Functions inherited from sksg::Node
const SkRect &	revalidate (InvalidationController *, const SkMatrix &)
void	invalidate (bool damage=true)
Public Member Functions inherited from SkRefCntBase
	SkRefCntBase ()
virtual	~SkRefCntBase ()
bool	unique () const
void	ref () const
void	unref () const
Protected Types inherited from sksg::Node
enum	InvalTraits { kBubbleDamage_Trait = 1 << 0 , kOverrideDamage_Trait = 1 << 1 }
Protected Member Functions inherited from sksg::GeometryEffect
	GeometryEffect (sk_sp< GeometryNode >)
	~GeometryEffect () override
void	onClip (SkCanvas *, bool antiAlias) const final
void	onDraw (SkCanvas *, const SkPaint &) const final
bool	onContains (const SkPoint &) const final
SkRect	onRevalidate (InvalidationController *, const SkMatrix &) final
SkPath	onAsPath () const final
Protected Member Functions inherited from sksg::GeometryNode
	GeometryNode ()
Protected Member Functions inherited from sksg::Node
	Node (uint32_t invalTraits)
	~Node () override
const SkRect &	bounds () const
bool	hasInval () const
void	observeInval (const sk_sp< Node > &)
void	unobserveInval (const sk_sp< Node > &)

Detailed Description

Apply an offset effect to the child geometry.

Definition at line 157 of file SkSGGeometryEffect.h.

Member Function Documentation

Make()

static sk_sp< OffsetEffect > sksg::OffsetEffect::Make ( sk_sp< GeometryNode >  child )

inlinestatic

Definition at line 159 of file SkSGGeometryEffect.h.

                                                               {
        return child ? sk_sp<OffsetEffect>(new OffsetEffect(std::move(child))) : nullptr;
    }

onRevalidateEffect()

SkPath sksg::OffsetEffect::onRevalidateEffect ( const sk_sp< GeometryNode > &  child )

overrideprivatevirtual

Implements sksg::GeometryEffect.

Definition at line 155 of file SkSGGeometryEffect.cpp.

                                                                        {
    SkPath path = child->asPath();
 
    if (!SkScalarNearlyZero(fOffset)) {
        SkPaint paint;
        paint.setStyle(SkPaint::kStroke_Style);
        paint.setStrokeWidth(std::abs(fOffset) * 2);
        paint.setStrokeMiter(fMiterLimit);
        paint.setStrokeJoin(fJoin);
 
        SkPath fill_path;
        skpathutils::FillPathWithPaint(path, paint, &fill_path, nullptr);
 
        if (fOffset > 0) {
            Op(path, fill_path, kUnion_SkPathOp, &path);
        } else {
            Op(path, fill_path, kDifference_SkPathOp, &path);
        }
 
        // TODO: this seems to break path combining (winding mismatch?)
        // Simplify(path, &path);
    }
 
    return path;
}

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

• third_party/skia/modules/sksg/include/SkSGGeometryEffect.h
• third_party/skia/modules/sksg/src/SkSGGeometryEffect.cpp