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Skia
2DGraphicsLibrary
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Skia
2DGraphicsLibrary
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This class draws a shadow of the object (possibly offset), and then draws the original object in its original position. More...
#include <SkBlurDrawLooper.h>
Classes | |
| class | BlurDrawLooperContext |
Public Types | |
| enum | BlurFlags { kNone_BlurFlag = 0x00, kIgnoreTransform_BlurFlag = 0x01, kOverrideColor_BlurFlag = 0x02, kHighQuality_BlurFlag = 0x04, kAll_BlurFlag = 0x07 } |
 Public Types inherited from SkFlattenable | |
| enum | Type { kSkColorFilter_Type, kSkDrawable_Type, kSkDrawLooper_Type, kSkImageFilter_Type, kSkMaskFilter_Type, kSkPathEffect_Type, kSkPixelRef_Type, kSkRasterizer_Type, kSkShader_Type, kSkUnused_Type, kSkXfermode_Type, kSkNormalSource_Type } |
| typedef sk_sp< SkFlattenable >(* | Factory )(SkReadBuffer &) |
Public Member Functions | |
| SkDrawLooper::Context * | makeContext (SkCanvas *, SkArenaAlloc *) const override |
| Called right before something is being drawn. More... | |
| Public Member Functions inherited from SkDrawLooper | |
| 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 |
| Public Member Functions inherited from SkFlattenable | |
| 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(). | |
| virtual const char * | getTypeName () const |
| Returns the name of the object's class. More... | |
| 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... | |
Static Public Member Functions | |
| static sk_sp< SkDrawLooper > | Make (SkColor color, SkScalar sigma, SkScalar dx, SkScalar dy, uint32_t flags=kNone_BlurFlag) |
| Static Public Member Functions inherited from SkFlattenable | |
| static Factory | NameToFactory (const char name[]) |
| static const char * | FactoryToName (Factory) |
| static bool | NameToType (const char name[], Type *type) |
| static void | Register (const char name[], Factory, Type) |
Protected Member Functions | |
| SkBlurDrawLooper (SkColor color, SkScalar sigma, SkScalar dx, SkScalar dy, uint32_t flags) | |
| void | flatten (SkWriteBuffer &) const override |
| Override this if your subclass needs to record data that it will need to recreate itself from its CreateProc (returned by getFactory()). | |
| bool | asABlurShadow (BlurShadowRec *) const override |
| If this looper can be interpreted as having two layers, such that. More... | |
| 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 | State { kBeforeEdge, kAfterEdge, kDone } |
| typedef SkDrawLooper | INHERITED |
Private Member Functions | |
| void | init (SkScalar sigma, SkScalar dx, SkScalar dy, SkColor color, uint32_t flags) |
| void | initEffects () |
Private Attributes | |
| sk_sp< SkMaskFilter > | fBlur |
| sk_sp< SkColorFilter > | fColorFilter |
| SkScalar | fDx |
| SkScalar | fDy |
| SkScalar | fSigma |
| SkColor | fBlurColor |
| uint32_t | fBlurFlags |
This class draws a shadow of the object (possibly offset), and then draws the original object in its original position.
should there be an option to just draw the shadow/blur layer? webkit?
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overrideprotectedvirtual |
If this looper can be interpreted as having two layers, such that.
If any of the above are not met, return false and ignore the BlurShadowRec parameter.
Reimplemented from SkDrawLooper.
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overridevirtual |
Called right before something is being drawn.
Returns a Context whose next() method should be called until it returns false.
Implements SkDrawLooper.
