SkDrawLooper Class Reference

DEPRECATED: No longer supported in Skia. More...

#include <SkDrawLooper.h>

Inheritance diagram for SkDrawLooper:

Classes
struct	BlurShadowRec
class	Context
	Holds state during a draw. More...

Public Types
enum	Type {   kSkColorFilter_Type , kSkBlender_Type , kSkDrawable_Type , kSkDrawLooper_Type ,   kSkImageFilter_Type , kSkMaskFilter_Type , kSkPathEffect_Type , kSkShader_Type }
typedef sk_sp< SkFlattenable >(*	Factory) (SkReadBuffer &)

Public Member Functions
virtual Context *	makeContext (SkArenaAlloc *) const =0
	Called right before something is being drawn. More...
bool	canComputeFastBounds (const SkPaint &paint) const
	The fast bounds functions are used to enable the paint to be culled early in the drawing pipeline. More...
void	computeFastBounds (const SkPaint &paint, const SkRect &src, SkRect *dst) const
virtual bool	asABlurShadow (BlurShadowRec *) const
	If this looper can be interpreted as having two layers, such that. More...
SkFlattenable::Type	getFlattenableType () const override
void	apply (SkCanvas *canvas, const SkPaint &paint, std::function< void(SkCanvas *, const SkPaint &)>)
virtual Factory	getFactory () const =0
	Implement this to return a factory function pointer that can be called to recreate your class given a buffer (previously written to by your override of flatten(). More...
virtual const char *	getTypeName () const =0
	Returns the name of the object's class. More...
virtual void	flatten (SkWriteBuffer &) const
	Override this if your subclass needs to record data that it will need to recreate itself from its CreateProc (returned by getFactory()). More...
sk_sp< SkData >	serialize (const SkSerialProcs *=nullptr) const
size_t	serialize (void *memory, size_t memory_size, const SkSerialProcs *=nullptr) const
bool	unique () const
	May return true if the caller is the only owner. More...
void	ref () const
	Increment the reference count. More...
void	unref () const
	Decrement the reference count. More...

Static Public Member Functions
static SkFlattenable::Type	GetFlattenableType ()
static sk_sp< SkDrawLooper >	Deserialize (const void *data, size_t size, const SkDeserialProcs *procs=nullptr)
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
	SkDrawLooper ()

Detailed Description

DEPRECATED: No longer supported in Skia.

Member Typedef Documentation

Factory

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

inherited

Member Enumeration Documentation

Type

enum SkFlattenable::Type

inherited

Enumerator
kSkColorFilter_Type
kSkBlender_Type
kSkDrawable_Type
kSkDrawLooper_Type
kSkImageFilter_Type
kSkMaskFilter_Type
kSkPathEffect_Type
kSkShader_Type

Constructor & Destructor Documentation

SkDrawLooper()

SkDrawLooper::SkDrawLooper ( )

inlineprotected

Member Function Documentation

apply()

void SkDrawLooper::apply	(	SkCanvas *	canvas,
		const SkPaint &	paint,
		std::function< void(SkCanvas *, const SkPaint &)>
	)

asABlurShadow()

virtual bool SkDrawLooper::asABlurShadow ( BlurShadowRec *  ) const

virtual

If this looper can be interpreted as having two layers, such that.

1. The first layer (bottom most) just has a blur and translate
2. The second layer has no modifications to either paint or canvas
3. No other layers. then return true, and if not null, fill out the BlurShadowRec).

If any of the above are not met, return false and ignore the BlurShadowRec parameter.

Reimplemented in SkLayerDrawLooper.

canComputeFastBounds()

bool SkDrawLooper::canComputeFastBounds

(

const SkPaint &

paint

)

const

The fast bounds functions are used to enable the paint to be culled early in the drawing pipeline.

If a subclass can support this feature it must return true for the canComputeFastBounds() function. If that function returns false then computeFastBounds behavior is undefined otherwise it is expected to have the following behavior. Given the parent paint and the parent's bounding rect the subclass must fill in and return the storage rect, where the storage rect is with the union of the src rect and the looper's bounding rect.

computeFastBounds()

void SkDrawLooper::computeFastBounds	(	const SkPaint &	paint,
		const SkRect &	src,
		SkRect *	dst
	)		const

Deserialize() [1/2]

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

inlinestatic

Deserialize() [2/2]

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

staticinherited

FactoryToName()

static const char* SkFlattenable::FactoryToName ( Factory  )

staticinherited

flatten()

virtual void SkFlattenable::flatten ( SkWriteBuffer &  ) const

inlinevirtualinherited

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 in SkLayerDrawLooper.

getFactory()

virtual Factory SkFlattenable::getFactory ( ) const

pure virtualinherited

Implement this to return a factory function pointer that can be called to recreate your class given a buffer (previously written to by your override of flatten().

Implemented in SkDrawable.

GetFlattenableType()

static SkFlattenable::Type SkDrawLooper::GetFlattenableType ( )

inlinestatic

getFlattenableType()

SkFlattenable::Type SkDrawLooper::getFlattenableType ( ) const

inlineoverridevirtual

Implements SkFlattenable.

getTypeName()

virtual const char* SkFlattenable::getTypeName ( ) const

pure virtualinherited

Returns the name of the object's class.

Implemented in SkDrawable.

makeContext()

virtual Context* SkDrawLooper::makeContext ( SkArenaAlloc *  ) const

pure virtual

Called right before something is being drawn.

Returns a Context whose next() method should be called until it returns false.

Implemented in SkLayerDrawLooper.

NameToFactory()

static Factory SkFlattenable::NameToFactory ( const char  name[] )

staticinherited

ref()

void SkRefCntBase::ref ( ) const

inlineinherited

Increment the reference count.

Must be balanced by a call to unref().

Register()

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

staticinherited

serialize() [1/2]

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

inherited

serialize() [2/2]

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

inherited

unique()

bool SkRefCntBase::unique ( ) const

inlineinherited

May return true if the caller is the only owner.

Ensures that all previous owner's actions are complete.

unref()

void SkRefCntBase::unref ( ) const

inlineinherited

Decrement the reference count.

If the reference count is 1 before the decrement, then delete the object. Note that if this is the case, then the object needs to have been allocated via new, and not on the stack.

---

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

• /CHECKOUT/include/core/SkDrawLooper.h