SkPicture Reference === # Picture # Class SkPicture ## Constructor SkPicture can be constructed or initialized by these functions, including C++ class constructors.

Topic	Description
MakeFromData	incomplete
MakeFromStream	incomplete
MakePlaceholder	incomplete

An SkPicture records drawing commands made to a canvas to be played back at a later time. This base class handles serialization and a few other miscellany. ## Overview

Topic	Description
Class Declarations	embedded class members
Constructors	functions that construct SkPicture
Functions	global and class member functions

## Class SkPicture uses C++ classes to declare the public data structures and interfaces.

Topic	Description
AbortCallback	incomplete

## Member Function SkPicture member functions read and modify the structure properties.

Topic	Description
MakeFromData	incomplete
MakeFromStream	incomplete
MakePlaceholder	incomplete
approximateBytesUsed	incomplete
approximateOpCount	incomplete
cullRect	incomplete
playback	incomplete
serialize	incomplete
uniqueID	incomplete

# Class SkPicture::AbortCallback ## Constructor SkPicture can be constructed or initialized by these functions, including C++ class constructors.

Topic	Description

## Member_Function SkPicture member functions read and modify the structure properties.

Topic	Description

Subclasses of this can be passed to playback. During the playback of the picture, this callback will periodically be invoked. If its abort returns true, then picture playback will be interrupted. The resulting drawing is undefined, as there is no guarantee how often the callback will be invoked. If the abort happens inside some level of nested calls to save(), restore will automatically be called to return the state to the same level it was before the playback call was made. ## AbortCallback

AbortCallback()

### Return Value incomplete ### Example

### See Also incomplete --- ## ~AbortCallback

virtual

### Example

### See Also incomplete --- ## abort

virtual bool abort() = 0

### Return Value incomplete ### Example

### See Also incomplete --- ## MakeFromStream

static sk sp<SkPicture> MakeFromStream(SkStream* stream, const SkDeserialProcs* procs = nullptr)

Recreate a picture that was serialized into a stream or data. ### Parameters

`stream`	incomplete
`procs`	incomplete

### Return Value incomplete ### Example

### See Also incomplete --- ## MakeFromData

static sk sp<SkPicture> MakeFromData(const SkData* data, const SkDeserialProcs* procs = nullptr)

### Parameters

`data`	incomplete
`procs`	incomplete

### Return Value incomplete ### Example

### See Also incomplete ---

static sk sp<SkPicture> MakeFromData(const void* data, size_t size,
                                     const SkDeserialProcs* procs = nullptr)

### Parameters

`data`	incomplete
`size`	incomplete
`procs`	incomplete

### Return Value incomplete ### Example

### See Also incomplete --- ## playback

virtual void playback(SkCanvas* canvas, AbortCallback* callback = nullptr) const = 0

Replays the drawing commands on the specified canvas. Note that this has the effect of unfurling this picture into the destination canvas. Using the SkCanvas::drawPicture entry point gives the destination canvas the option of just taking a ref. ### Parameters

`canvas`	the canvas receiving the drawing commands.
`callback`	a callback that allows interruption of playback

### Return Value incomplete ### Example

### See Also incomplete --- ## cullRect

virtual SkRect cullRect() const = 0

Return a cull rect for this picture. Ops recorded into this picture that attempt to draw outside the cull might not be drawn. ### Return Value incomplete ### Example

### See Also incomplete --- ## uniqueID

uint32_t uniqueID() const

Returns a non-zero value unique among all pictures. ### Return Value incomplete ### Example

### See Also incomplete --- ## serialize

sk sp<SkData> serialize(const SkSerialProcs* procs = nullptr) const

### Parameters

procs incomplete

### Return Value incomplete ### Example

### See Also incomplete ---

void serialize(SkWStream* stream, const SkSerialProcs* procs = nullptr) const

### Parameters

`stream`	incomplete
`procs`	incomplete

### Example

### See Also incomplete --- ## MakePlaceholder

static sk sp<SkPicture> MakePlaceholder(SkRect cull)

Return a placeholder SkPicture. This placeholder does not draw anything itself. It has a distinct uniqueID (just like all Pictures) and will always be visible to SkSerialProcs. ### Parameters

cull the placeholder's dimensions

### Return Value incomplete ### Example

### See Also incomplete --- ## approximateOpCount

virtual int approximateOpCount() const = 0

Return the approximate number of operations in this picture. This number may be greater or less than the number of SkCanvas calls recorded: some calls may be recorded as more than one operation, or some calls may be optimized away. ### Return Value incomplete ### Example

### See Also incomplete --- ## approximateBytesUsed

virtual size_t approximateBytesUsed() const = 0

Returns the approximate byte size of this picture, not including large ref'd objects. ### Return Value incomplete ### Example

### See Also incomplete ---