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Skia
2DGraphicsLibrary
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Skia
2DGraphicsLibrary
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This class is the smart container for pixel memory, and is used with SkBitmap. More...
#include <SkPixelRef.h>
Classes | |
| struct | GenIDChangeListener |
Public Member Functions | |
| SkPixelRef (int width, int height, void *addr, size_t rowBytes, sk_sp< SkColorTable >=nullptr) | |
| int | width () const |
| int | height () const |
| void * | pixels () const |
| SkColorTable * | colorTable () const |
| size_t | rowBytes () const |
| uint32_t | getGenerationID () const |
| Returns a non-zero, unique value corresponding to the pixels in this pixelref. More... | |
| void | notifyPixelsChanged () |
| Call this if you have changed the contents of the pixels. More... | |
| bool | isImmutable () const |
| Returns true if this pixelref is marked as immutable, meaning that the contents of its pixels will not change for the lifetime of the pixelref. | |
| void | setImmutable () |
| Marks this pixelref is immutable, meaning that the contents of its pixels will not change for the lifetime of the pixelref. More... | |
| void | addGenIDChangeListener (GenIDChangeListener *listener) |
| void | notifyAddedToCache () |
| virtual SkDiscardableMemory * | diagnostic_only_getDiscardable () const |
 Public Member Functions inherited from SkRefCntBase | |
| SkRefCntBase () | |
| Default construct, initializing the reference count to 1. | |
| virtual | ~SkRefCntBase () |
| Destruct, asserting that the reference count is 1. | |
| int32_t | getRefCnt () const |
| Return the reference count. More... | |
| void | validate () 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... | |
Protected Member Functions | |
| virtual void | onNotifyPixelsChanged () |
| Protected Member Functions inherited from SkRefCntBase | |
| void | internal_dispose_restore_refcnt_to_1 () const |
| Allow subclasses to call this if they've overridden internal_dispose so they can reset fRefCnt before the destructor is called or if they choose not to call the destructor (e.g. More... | |
Private Types | |
| enum | { kMutable, kTemporarilyImmutable, kImmutable } |
| typedef SkRefCnt | INHERITED |
Private Attributes | |
| int | fWidth |
| int | fHeight |
| sk_sp< SkColorTable > | fCTable |
| void * | fPixels |
| size_t | fRowBytes |
| SkAtomic< uint32_t > | fTaggedGenID |
| SkTDArray< GenIDChangeListener * > | fGenIDChangeListeners |
| SkAtomic< bool > | fAddedToCache |
| enum SkPixelRef:: { ... } | fMutability |
Friends | |
| class | SkSurface_Raster |
| class | SkImage_Raster |
| class | SkSpecialImage_Raster |
| class | SkImage_Gpu |
| class | SkImage_Lazy |
| class | SkSpecialImage_Gpu |
| void | SkBitmapCache_setImmutableWithID (SkPixelRef *, uint32_t) |
This class is the smart container for pixel memory, and is used with SkBitmap.
This class can be shared/accessed between multiple threads.
| uint32_t SkPixelRef::getGenerationID | ( | ) | const |
Returns a non-zero, unique value corresponding to the pixels in this pixelref.
Each time the pixels are changed (and notifyPixelsChanged is called), a different generation ID will be returned.
| void SkPixelRef::notifyPixelsChanged | ( | ) |
Call this if you have changed the contents of the pixels.
This will in- turn cause a different generation ID value to be returned from getGenerationID().
| void SkPixelRef::setImmutable | ( | ) |
Marks this pixelref is immutable, meaning that the contents of its pixels will not change for the lifetime of the pixelref.
This state can be set on a pixelref, but it cannot be cleared once it is set.
