#include <SkColorShader.h>

Inheritance diagram for SkColorShader:

Public Member Functions
	SkColorShader (SkColor c)

bool	isOpaque () const override

bool	isConstant () const override

ShaderType	type () const override

SkColor	color () const

Public Member Functions inherited from SkShaderBase
	~SkShaderBase () override

sk_sp< SkShader >	makeInvertAlpha () const

sk_sp< SkShader >	makeWithCTM (const SkMatrix &) const

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 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
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

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

Private Member Functions
void	flatten (SkWriteBuffer &) const override

bool	onAsLuminanceColor (SkColor4f *lum) const override

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

Additional Inherited Members
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 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)

Protected Member Functions inherited from SkShaderBase
	SkShaderBase ()

void	flatten (SkWriteBuffer &) const override

Detailed Description

A Shader that represents a single color. In general, this effect can be accomplished by just using the color field on the paint, but if an actual shader object is needed, this provides that feature.

Definition at line 26 of file SkColorShader.h.

Constructor & Destructor Documentation

◆ SkColorShader()

SkColorShader::SkColorShader ( SkColor c )

explicit

Create a ColorShader that ignores the color in the paint, and uses the specified color. Note: like all shaders, at draw time the paint's alpha will be respected, and is applied to the specified color.

Definition at line 27 of file SkColorShader.cpp.

27: fColor(c) {}

Member Function Documentation

◆ appendStages()

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

overrideprivatevirtual

Adds stages to implement this shader. To ensure that the correct input coords are present in r,g MatrixRec::apply() must be called (unless the shader doesn't require it's input coords). The default impl creates shadercontext and calls that (not very efficient).

Implements SkShaderBase.

Definition at line 68 of file SkColorShader.cpp.

                                                                                       {
    SkColor4f color = SkColor4f::FromColor(fColor);
    SkColorSpaceXformSteps(sk_srgb_singleton(), kUnpremul_SkAlphaType,
                           rec.fDstCS,          kUnpremul_SkAlphaType).apply(color.vec());
    rec.fPipeline->appendConstantColor(rec.fAlloc, color.premul().vec());
    return true;
}

◆ color()

SkColor SkColorShader::color ( ) const

inline

Definition at line 39 of file SkColorShader.h.

39{ return fColor; }

◆ flatten()

void SkColorShader::flatten ( SkWriteBuffer & ) const

overrideprivatevirtual

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 SkFlattenable.

Definition at line 37 of file SkColorShader.cpp.

                                                       {
    buffer.writeColor(fColor);
}

◆ isConstant()

bool SkColorShader::isConstant ( ) const

inlineoverridevirtual

Returns true if the shader is guaranteed to produce only a single color. Subclasses can override this to allow loop-hoisting optimization.

Reimplemented from SkShaderBase.

Definition at line 35 of file SkColorShader.h.

35{ return true; }

◆ isOpaque()

bool SkColorShader::isOpaque ( ) const

overridevirtual

Returns true if the shader is guaranteed to produce only opaque colors, subject to the SkPaint using the shader to apply an opaque alpha value. Subclasses should override this to allow some optimizations.

Reimplemented from SkShader.

Definition at line 29 of file SkColorShader.cpp.

                                   {
    return SkColorGetA(fColor) == 255;
}

◆ onAsLuminanceColor()

bool SkColorShader::onAsLuminanceColor ( SkColor4f * lum ) const

inlineoverrideprivatevirtual

Reimplemented from SkShaderBase.

Definition at line 47 of file SkColorShader.h.

                                                           {
        *lum = SkColor4f::FromColor(fColor);
        return true;
    }

◆ type()

ShaderType SkColorShader::type ( ) const

inlineoverridevirtual

Implements SkShaderBase.

Definition at line 37 of file SkColorShader.h.

37{ return ShaderType::kColor; }

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

third_party/skia/src/shaders/SkColorShader.h
third_party/skia/src/shaders/SkColorShader.cpp

Public Member Functions

Private Member Functions

Additional Inherited Members