#include <SkGraphics.h>

Public Types
typedef std::unique_ptr< SkImageGenerator >(*	ImageGeneratorFromEncodedDataFactory) (sk_sp< SkData >)

using	OpenTypeSVGDecoderFactory = std::unique_ptr< SkOpenTypeSVGDecoder >()(const uint8_t svg, size_t length)
	To draw OpenType SVG data, Skia will look at this runtime function pointer. More...

Static Public Member Functions
static void	Init ()
	Call this at process initialization time if your environment does not permit static global initializers that execute code. More...

static size_t	GetFontCacheLimit ()
	Return the max number of bytes that should be used by the font cache. More...

static size_t	SetFontCacheLimit (size_t bytes)
	Specify the max number of bytes that should be used by the font cache. More...

static size_t	GetFontCacheUsed ()
	Return the number of bytes currently used by the font cache. More...

static int	GetFontCacheCountUsed ()
	Return the number of entries in the font cache. More...

static int	GetFontCacheCountLimit ()
	Return the current limit to the number of entries in the font cache. More...

static int	SetFontCacheCountLimit (int count)
	Set the limit to the number of entries in the font cache, and return the previous value. More...

static void	PurgeFontCache ()
	For debugging purposes, this will attempt to purge the font cache. More...

static void	PurgePinnedFontCache ()
	If the strike cache is above the cache limit, attempt to purge strikes with pinners. More...

static size_t	GetResourceCacheTotalBytesUsed ()
	This function returns the memory used for temporary images and other resources. More...

static size_t	GetResourceCacheTotalByteLimit ()
	These functions get/set the memory usage limit for the resource cache, used for temporary bitmaps and other resources. More...

static size_t	SetResourceCacheTotalByteLimit (size_t newLimit)

static void	PurgeResourceCache ()
	For debugging purposes, this will attempt to purge the resource cache. More...

static size_t	GetResourceCacheSingleAllocationByteLimit ()
	When the cachable entry is very lage (e.g. More...

static size_t	SetResourceCacheSingleAllocationByteLimit (size_t newLimit)

static void	DumpMemoryStatistics (SkTraceMemoryDump *dump)
	Dumps memory usage of caches using the SkTraceMemoryDump interface. More...

static void	PurgeAllCaches ()
	Free as much globally cached memory as possible. More...

static ImageGeneratorFromEncodedDataFactory	SetImageGeneratorFromEncodedDataFactory (ImageGeneratorFromEncodedDataFactory)
	To instantiate images from encoded data, first looks at this runtime function-ptr. More...

static OpenTypeSVGDecoderFactory	SetOpenTypeSVGDecoderFactory (OpenTypeSVGDecoderFactory)

static OpenTypeSVGDecoderFactory	GetOpenTypeSVGDecoderFactory ()

Member Typedef Documentation

◆ ImageGeneratorFromEncodedDataFactory

typedef std::unique_ptr<SkImageGenerator>(* SkGraphics::ImageGeneratorFromEncodedDataFactory) (sk_sp< SkData >)

◆ OpenTypeSVGDecoderFactory

using SkGraphics::OpenTypeSVGDecoderFactory = std::unique_ptr<SkOpenTypeSVGDecoder> (*)(const uint8_t* svg, size_t length)

To draw OpenType SVG data, Skia will look at this runtime function pointer.

If this function pointer is set, the SkTypeface implementations which support OpenType SVG will call this function to create an SkOpenTypeSVGDecoder to decode the OpenType SVG and draw it as needed. If this function is not set, the SkTypeface implementations will generally not support OpenType SVG and attempt to use other glyph representations if available.

Member Function Documentation

◆ DumpMemoryStatistics()

static void SkGraphics::DumpMemoryStatistics ( SkTraceMemoryDump * dump )

static

Dumps memory usage of caches using the SkTraceMemoryDump interface.

See SkTraceMemoryDump for usage of this method.

◆ GetFontCacheCountLimit()

static int SkGraphics::GetFontCacheCountLimit ( )

static

Return the current limit to the number of entries in the font cache.

A cache "entry" is associated with each typeface + pointSize + matrix.

◆ GetFontCacheCountUsed()

static int SkGraphics::GetFontCacheCountUsed ( )

static

Return the number of entries in the font cache.

A cache "entry" is associated with each typeface + pointSize + matrix.

◆ GetFontCacheLimit()

static size_t SkGraphics::GetFontCacheLimit ( )

static

Return the max number of bytes that should be used by the font cache.

If the cache needs to allocate more, it will purge previous entries. This max can be changed by calling SetFontCacheLimit().

◆ GetFontCacheUsed()

static size_t SkGraphics::GetFontCacheUsed ( )

static

Return the number of bytes currently used by the font cache.

◆ GetOpenTypeSVGDecoderFactory()

static OpenTypeSVGDecoderFactory SkGraphics::GetOpenTypeSVGDecoderFactory ( )

static

◆ GetResourceCacheSingleAllocationByteLimit()

static size_t SkGraphics::GetResourceCacheSingleAllocationByteLimit ( )

static

When the cachable entry is very lage (e.g.

a large scaled bitmap), adding it to the cache can cause most/all of the existing entries to be purged. To avoid the, the client can set a limit for a single allocation. If a cacheable entry would have been cached, but its size exceeds this limit, then we do not attempt to cache it at all.

Zero is the default value, meaning we always attempt to cache entries.

◆ GetResourceCacheTotalByteLimit()

static size_t SkGraphics::GetResourceCacheTotalByteLimit ( )

static

These functions get/set the memory usage limit for the resource cache, used for temporary bitmaps and other resources.

Entries are purged from the cache when the memory useage exceeds this limit.

◆ GetResourceCacheTotalBytesUsed()

static size_t SkGraphics::GetResourceCacheTotalBytesUsed ( )

static

This function returns the memory used for temporary images and other resources.

◆ Init()

static void SkGraphics::Init ( )

static

Call this at process initialization time if your environment does not permit static global initializers that execute code.

Init() is thread-safe and idempotent.

◆ PurgeAllCaches()

static void SkGraphics::PurgeAllCaches ( )

static

Free as much globally cached memory as possible.

This will purge all private caches in Skia, including font and image caches.

If there are caches associated with GPU context, those will not be affected by this call.

◆ PurgeFontCache()

static void SkGraphics::PurgeFontCache ( )

static

For debugging purposes, this will attempt to purge the font cache.

It does not change the limit, but will cause subsequent font measures and draws to be recreated, since they will no longer be in the cache.

◆ PurgePinnedFontCache()

static void SkGraphics::PurgePinnedFontCache ( )

static

If the strike cache is above the cache limit, attempt to purge strikes with pinners.

This should be called after clients release locks on pinned strikes.

◆ PurgeResourceCache()

static void SkGraphics::PurgeResourceCache ( )

static

For debugging purposes, this will attempt to purge the resource cache.

It does not change the limit.

◆ SetFontCacheCountLimit()

static int SkGraphics::SetFontCacheCountLimit ( int count )

static

Set the limit to the number of entries in the font cache, and return the previous value.

If this new value is lower than the previous, it will automatically try to purge entries to meet the new limit.

◆ SetFontCacheLimit()

static size_t SkGraphics::SetFontCacheLimit ( size_t bytes )

static

Specify the max number of bytes that should be used by the font cache.

If the cache needs to allocate more, it will purge previous entries.

This function returns the previous setting, as if GetFontCacheLimit() had be called before the new limit was set.

◆ SetImageGeneratorFromEncodedDataFactory()

static ImageGeneratorFromEncodedDataFactory SkGraphics::SetImageGeneratorFromEncodedDataFactory ( ImageGeneratorFromEncodedDataFactory )

static

To instantiate images from encoded data, first looks at this runtime function-ptr.

If it exists, it is called to create an SkImageGenerator from SkData. If there is no function-ptr or there is, but it returns NULL, then skia will call its internal default implementation.

Returns the previous factory (which could be NULL).

◆ SetOpenTypeSVGDecoderFactory()

static OpenTypeSVGDecoderFactory SkGraphics::SetOpenTypeSVGDecoderFactory ( OpenTypeSVGDecoderFactory )

static

◆ SetResourceCacheSingleAllocationByteLimit()

static size_t SkGraphics::SetResourceCacheSingleAllocationByteLimit ( size_t newLimit )

static

◆ SetResourceCacheTotalByteLimit()

static size_t SkGraphics::SetResourceCacheTotalByteLimit ( size_t newLimit )

static

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

/CHECKOUT/include/core/SkGraphics.h

Public Types

Static Public Member Functions

Member Typedef Documentation

◆ ImageGeneratorFromEncodedDataFactory

◆ OpenTypeSVGDecoderFactory

Member Function Documentation

◆ DumpMemoryStatistics()

◆ GetFontCacheCountLimit()

◆ GetFontCacheCountUsed()

◆ GetFontCacheLimit()

◆ GetFontCacheUsed()

◆ GetOpenTypeSVGDecoderFactory()

◆ GetResourceCacheSingleAllocationByteLimit()

◆ GetResourceCacheTotalByteLimit()

◆ GetResourceCacheTotalBytesUsed()

◆ Init()

◆ PurgeAllCaches()

◆ PurgeFontCache()

◆ PurgePinnedFontCache()

◆ PurgeResourceCache()

◆ SetFontCacheCountLimit()

◆ SetFontCacheLimit()

◆ SetImageGeneratorFromEncodedDataFactory()

◆ SetOpenTypeSVGDecoderFactory()

◆ SetResourceCacheSingleAllocationByteLimit()

◆ SetResourceCacheTotalByteLimit()