SkEmptyPicture Class Reference

Inheritance diagram for SkEmptyPicture:

Public Member Functions
void	playback (SkCanvas *, AbortCallback *) const override
size_t	approximateBytesUsed () const override
int	approximateOpCount (bool nested) const override
SkRect	cullRect () const override
Public Member Functions inherited from SkPicture
	~SkPicture () override
virtual void	playback (SkCanvas *canvas, AbortCallback *callback=nullptr) const =0
virtual SkRect	cullRect () const =0
uint32_t	uniqueID () const
sk_sp< SkData >	serialize (const SkSerialProcs *procs=nullptr) const
void	serialize (SkWStream *stream, const SkSerialProcs *procs=nullptr) const
virtual int	approximateOpCount (bool nested=false) const =0
virtual size_t	approximateBytesUsed () const =0
sk_sp< SkShader >	makeShader (SkTileMode tmx, SkTileMode tmy, SkFilterMode mode, const SkMatrix *localMatrix, const SkRect *tileRect) const
sk_sp< SkShader >	makeShader (SkTileMode tmx, SkTileMode tmy, SkFilterMode mode) const
Public Member Functions inherited from SkRefCntBase
	SkRefCntBase ()
virtual	~SkRefCntBase ()
bool	unique () const
void	ref () const
void	unref () const

Additional Inherited Members
Static Public Member Functions inherited from SkPicture
static sk_sp< SkPicture >	MakeFromStream (SkStream *stream, const SkDeserialProcs *procs=nullptr)
static sk_sp< SkPicture >	MakeFromData (const SkData *data, const SkDeserialProcs *procs=nullptr)
static sk_sp< SkPicture >	MakeFromData (const void *data, size_t size, const SkDeserialProcs *procs=nullptr)
static sk_sp< SkPicture >	MakePlaceholder (SkRect cull)

Detailed Description

Definition at line 58 of file SkPictureRecorder.cpp.

Member Function Documentation

approximateBytesUsed()

size_t SkEmptyPicture::approximateBytesUsed ( ) const

inlineoverridevirtual

Returns the approximate byte size of SkPicture. Does not include large objects referenced by SkPicture.

Returns

approximate size

example: https://fiddle.skia.org/c/@Picture_approximateBytesUsed

Implements SkPicture.

Definition at line 62 of file SkPictureRecorder.cpp.

{ return sizeof(*this); }

approximateOpCount()

int SkEmptyPicture::approximateOpCount ( bool  nested ) const

inlineoverridevirtual

Returns the approximate number of operations in SkPicture. Returned value may be greater or less than the number of SkCanvas calls recorded: some calls may be recorded as more than one operation, other calls may be optimized away.

Parameters

nested

if true, include the op-counts of nested pictures as well, else just return count the ops in the top-level picture.

Returns

approximate operation count

example: https://fiddle.skia.org/c/@Picture_approximateOpCount

Implements SkPicture.

Definition at line 63 of file SkPictureRecorder.cpp.

{ return 0; }

cullRect()

SkRect SkEmptyPicture::cullRect ( ) const

inlineoverridevirtual

Returns cull SkRect for this picture, passed in when SkPicture was created. Returned SkRect does not specify clipping SkRect for SkPicture; cull is hint of SkPicture bounds.

SkPicture is free to discard recorded drawing commands that fall outside cull.

Returns

bounds passed when SkPicture was created

example: https://fiddle.skia.org/c/@Picture_cullRect

Implements SkPicture.

Definition at line 64 of file SkPictureRecorder.cpp.

{ return SkRect::MakeEmpty(); }

playback()

void SkEmptyPicture::playback ( SkCanvas *  canvas, AbortCallback *  callback  ) const

inlineoverridevirtual

Replays the drawing commands on the specified canvas. In the case that the commands are recorded, each command in the SkPicture is sent separately to canvas.

To add a single command to draw SkPicture to recording canvas, call SkCanvas::drawPicture instead.

Parameters

canvas	receiver of drawing commands
callback	allows interruption of playback

example: https://fiddle.skia.org/c/@Picture_playback

Implements SkPicture.

Definition at line 60 of file SkPictureRecorder.cpp.

{ }

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

• third_party/skia/src/core/SkPictureRecorder.cpp