#include <SkSweepGradient.h>

Inheritance diagram for SkSweepGradient:

Public Member Functions
	SkSweepGradient (const SkPoint &center, SkScalar t0, SkScalar t1, const Descriptor &)

GradientType	asGradient (GradientInfo info, SkMatrix localMatrix) const override

const SkPoint &	center () const

SkScalar	tBias () const

SkScalar	tScale () const

Public Member Functions inherited from SkGradientBaseShader
	SkGradientBaseShader (const Descriptor &desc, const SkMatrix &ptsToUnit)

	~SkGradientBaseShader () override

ShaderType	type () const final

bool	isOpaque () const override

bool	interpolateInPremul () const

const SkMatrix &	getGradientMatrix () const

int	getColorCount () const

const float *	getPositions () const

const Interpolation &	getInterpolation () const

SkScalar	getPos (int i) const

SkColor	getLegacyColor (int i) const

bool	colorsAreOpaque () const

SkTileMode	getTileMode () const

const SkBitmap &	cachedBitmap () const

void	setCachedBitmap (SkBitmap b) const

Public Member Functions inherited from SkShaderBase
	~SkShaderBase () override

sk_sp< SkShader >	makeInvertAlpha () const

sk_sp< SkShader >	makeWithCTM (const SkMatrix &) const

virtual bool	isConstant () const

virtual ShaderType	type () const =0

virtual GradientType	asGradient (GradientInfo info=nullptr, SkMatrix localMatrix=nullptr) const

Context *	makeContext (const ContextRec &, SkArenaAlloc *) const

bool	asLuminanceColor (SkColor4f *) const

bool	appendRootStages (const SkStageRec &rec, const SkMatrix &ctm) const

virtual bool	appendStages (const SkStageRec &, const SkShaders::MatrixRec &) const =0

virtual SkImage *	onIsAImage (SkMatrix *, SkTileMode[2]) const

virtual SkRuntimeEffect *	asRuntimeEffect () const

Type	getFlattenableType () const override

virtual sk_sp< SkShader >	makeAsALocalMatrixShader (SkMatrix *localMatrix) const

Public Member Functions inherited from SkShader
virtual bool	isOpaque () const

SkImage *	isAImage (SkMatrix *localMatrix, SkTileMode xy[2]) const

bool	isAImage () const

sk_sp< SkShader >	makeWithLocalMatrix (const SkMatrix &) const

sk_sp< SkShader >	makeWithColorFilter (sk_sp< SkColorFilter >) const

sk_sp< SkShader >	makeWithWorkingColorSpace (sk_sp< SkColorSpace >) const

Public Member Functions inherited from SkFlattenable
	SkFlattenable ()

virtual Factory	getFactory () const =0

virtual const char *	getTypeName () const =0

virtual void	flatten (SkWriteBuffer &) const

virtual Type	getFlattenableType () const =0

sk_sp< SkData >	serialize (const SkSerialProcs *=nullptr) const

size_t	serialize (void memory, size_t memory_size, const SkSerialProcs =nullptr) const

Public Member Functions inherited from SkRefCntBase
	SkRefCntBase ()

virtual	~SkRefCntBase ()

bool	unique () const

void	ref () const

void	unref () const

Protected Member Functions
void	flatten (SkWriteBuffer &buffer) const override

void	appendGradientStages (SkArenaAlloc alloc, SkRasterPipeline tPipeline, SkRasterPipeline *postPipeline) const override

Protected Member Functions inherited from SkGradientBaseShader
void	flatten (SkWriteBuffer &) const override

void	commonAsAGradient (GradientInfo *) const

bool	onAsLuminanceColor (SkColor4f *) const override

bool	appendStages (const SkStageRec &, const SkShaders::MatrixRec &) const override

virtual void	appendGradientStages (SkArenaAlloc alloc, SkRasterPipeline tPipeline, SkRasterPipeline *postPipeline) const =0

Protected Member Functions inherited from SkShaderBase
	SkShaderBase ()

void	flatten (SkWriteBuffer &) const override

virtual bool	onAsLuminanceColor (SkColor4f *) const

Additional Inherited Members
Public Types inherited from SkGradientBaseShader
using	Interpolation = SkGradientShader::Interpolation

Public Types inherited from SkShaderBase
enum class	ShaderType { M }

enum class	GradientType { kNone , M }

enum	Flags { kOpaqueAlpha_Flag = 1 << 0 }

Public Types inherited from SkFlattenable
enum	Type { kSkColorFilter_Type , kSkBlender_Type , kSkDrawable_Type , kSkDrawLooper_Type , kSkImageFilter_Type , kSkMaskFilter_Type , kSkPathEffect_Type , kSkShader_Type }

typedef sk_sp< SkFlattenable >(*	Factory) (SkReadBuffer &)

Static Public Member Functions inherited from SkGradientBaseShader
static bool	ValidGradient (const SkColor4f colors[], int count, SkTileMode tileMode, const Interpolation &interpolation)

static sk_sp< SkShader >	MakeDegenerateGradient (const SkColor4f colors[], const SkScalar pos[], int colorCount, sk_sp< SkColorSpace > colorSpace, SkTileMode mode)

static void	AppendGradientFillStages (SkRasterPipeline p, SkArenaAlloc alloc, const SkPMColor4f colors, const SkScalar positions, int count)

static void	AppendInterpolatedToDstStages (SkRasterPipeline p, SkArenaAlloc alloc, bool colorsAreOpaque, const Interpolation &interpolation, const SkColorSpace intermediateColorSpace, const SkColorSpace dstColorSpace)

Static Public Member Functions inherited from SkShaderBase
static Type	GetFlattenableType ()

static sk_sp< SkShaderBase >	Deserialize (const void data, size_t size, const SkDeserialProcs procs=nullptr)

static void	RegisterFlattenables ()

static SkMatrix	ConcatLocalMatrices (const SkMatrix &parentLM, const SkMatrix &childLM)

Static Public Member Functions inherited from SkFlattenable
static Factory	NameToFactory (const char name[])

static const char *	FactoryToName (Factory)

static void	Register (const char name[], Factory)

static sk_sp< SkFlattenable >	Deserialize (Type, const void data, size_t length, const SkDeserialProcs procs=nullptr)

Public Attributes inherited from SkGradientBaseShader
SkColor4f *	fColors

SkScalar *	fPositions

int	fColorCount

sk_sp< SkColorSpace >	fColorSpace

Interpolation	fInterpolation

bool	fFirstStopIsImplicit

bool	fLastStopIsImplicit

Static Public Attributes inherited from SkGradientBaseShader
static constexpr SkScalar	kDegenerateThreshold = SK_Scalar1 / (1 << 15)

Protected Attributes inherited from SkGradientBaseShader
const SkMatrix	fPtsToUnit

SkTileMode	fTileMode

Detailed Description

Definition at line 21 of file SkSweepGradient.h.

Constructor & Destructor Documentation

◆ SkSweepGradient()

SkSweepGradient::SkSweepGradient	(	const SkPoint &	center,
		SkScalar	t0,
		SkScalar	t1,
		const Descriptor &	desc
	)

Definition at line 33 of file SkSweepGradient.cpp.

        : SkGradientBaseShader(desc, SkMatrix::Translate(-center.x(), -center.y()))
        , fCenter(center)
        , fTBias(-t0)
        , fTScale(1 / (t1 - t0)) {
    SkASSERT(t0 < t1);
}

Member Function Documentation

◆ appendGradientStages()

void SkSweepGradient::appendGradientStages	(	SkArenaAlloc *	alloc,
		SkRasterPipeline *	tPipeline,
		SkRasterPipeline *	postPipeline
	)		const

overrideprotectedvirtual

Implements SkGradientBaseShader.

Definition at line 94 of file SkSweepGradient.cpp.

                                                                    {
    p->append(SkRasterPipelineOp::xy_to_unit_angle);
    p->appendMatrix(alloc, SkMatrix::Scale(fTScale, 1) * SkMatrix::Translate(fTBias, 0));
}

◆ asGradient()

SkShaderBase::GradientType SkSweepGradient::asGradient	(	GradientInfo *	info,
		SkMatrix *	localMatrix
	)		const

overridevirtual

Reimplemented from SkShaderBase.

Definition at line 44 of file SkSweepGradient.cpp.

                                                                                    {
    if (info) {
        commonAsAGradient(info);
        info->fPoint[0] = fCenter;
    }
    if (localMatrix) {
        *localMatrix = SkMatrix::I();
    }
    return GradientType::kSweep;
}

◆ center()

const SkPoint & SkSweepGradient::center ( ) const

inline

Definition at line 27 of file SkSweepGradient.h.

27{ return fCenter; }

◆ flatten()

void SkSweepGradient::flatten ( SkWriteBuffer & ) const

overrideprotectedvirtual

Override this if your subclass needs to record data that it will need to recreate itself from its CreateProc (returned by getFactory()).

DEPRECATED public : will move to protected ... use serialize() instead

Reimplemented from SkGradientBaseShader.

Definition at line 87 of file SkSweepGradient.cpp.

                                                         {
    this->SkGradientBaseShader::flatten(buffer);
    buffer.writePoint(fCenter);
    buffer.writeScalar(fTBias);
    buffer.writeScalar(fTScale);
}

◆ tBias()

SkScalar SkSweepGradient::tBias ( ) const

inline

Definition at line 28 of file SkSweepGradient.h.

28{ return fTBias; }

◆ tScale()

SkScalar SkSweepGradient::tScale ( ) const

inline

Definition at line 29 of file SkSweepGradient.h.

29{ return fTScale; }

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

third_party/skia/src/shaders/gradients/SkSweepGradient.h
third_party/skia/src/shaders/gradients/SkSweepGradient.cpp

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ SkSweepGradient()

Member Function Documentation

◆ appendGradientStages()

◆ asGradient()

◆ center()

◆ flatten()

◆ tBias()

◆ tScale()