#include <SkLocalMatrixShader.h>

Inheritance diagram for SkCTMShader:

Public Member Functions
	SkCTMShader (sk_sp< SkShader > proxy, const SkMatrix &ctm)

bool	isOpaque () const override

bool	isConstant () const override

GradientType	asGradient (GradientInfo info, SkMatrix localMatrix) const override

ShaderType	type () const override

const SkMatrix &	ctm () const

sk_sp< SkShader >	proxyShader () const

Public Member Functions inherited from SkShaderBase
	~SkShaderBase () override

sk_sp< SkShader >	makeInvertAlpha () const

sk_sp< SkShader >	makeWithCTM (const SkMatrix &) 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

Protected Member Functions
void	flatten (SkWriteBuffer &) const override

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

Protected Member Functions inherited from SkShaderBase
	SkShaderBase ()

void	flatten (SkWriteBuffer &) const override

virtual bool	onAsLuminanceColor (SkColor4f *) const

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)

Detailed Description

Replaces the CTM when used. Created to support clipShaders, which have to be evaluated using the CTM that was present at the time they were specified (which may be different from the CTM at the time something is drawn through the clip.

Definition at line 82 of file SkLocalMatrixShader.h.

Constructor & Destructor Documentation

◆ SkCTMShader()

SkCTMShader::SkCTMShader	(	sk_sp< SkShader >	proxy,
		const SkMatrix &	ctm
	)

Definition at line 68 of file SkLocalMatrixShader.cpp.

69 : fProxyShader(std::move(proxy)), fCTM(ctm) {}

SkCTMShader::ctm

const SkMatrix & ctm() const

Definition SkLocalMatrixShader.h:93

Member Function Documentation

◆ appendStages()

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

overrideprotectedvirtual

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 80 of file SkLocalMatrixShader.cpp.

                                                                                     {
    return as_SB(fProxyShader)->appendRootStages(rec, fCTM);
}

◆ asGradient()

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

overridevirtual

Reimplemented from SkShaderBase.

Definition at line 75 of file SkLocalMatrixShader.cpp.

                                                                                {
    return as_SB(fProxyShader)->asGradient(info, localMatrix);
}

◆ ctm()

const SkMatrix & SkCTMShader::ctm ( ) const

inline

Definition at line 93 of file SkLocalMatrixShader.h.

93{ return fCTM; }

◆ flatten()

void SkCTMShader::flatten ( SkWriteBuffer & ) const

inlineoverrideprotectedvirtual

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 97 of file SkLocalMatrixShader.h.

97{ SkASSERT(false); }

SkASSERT

#define SkASSERT(cond)

Definition SkAssert.h:116

◆ isConstant()

bool SkCTMShader::isConstant ( ) const

overridevirtual

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 71 of file SkLocalMatrixShader.cpp.

                                   {
    return as_SB(fProxyShader)->isConstant();
}

◆ isOpaque()

bool SkCTMShader::isOpaque ( ) const

inlineoverridevirtual

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 86 of file SkLocalMatrixShader.h.

86{ return fProxyShader->isOpaque(); }

SkShader::isOpaque

virtual bool isOpaque() const

Definition SkShader.h:44

◆ proxyShader()

sk_sp< SkShader > SkCTMShader::proxyShader ( ) const

inline

Definition at line 94 of file SkLocalMatrixShader.h.

94{ return fProxyShader; }

◆ type()

ShaderType SkCTMShader::type ( ) const