skia2/include/effects/SkBlurDrawLooper.h
reed d053ce9c54 Reland of [2] of "switch colorfilters to sk_sp (patchset #11 id:200001 of https://codereview.chromium.o… (patchset #1 id:1 of https://codereview.chromium.org/1821103004/ )
Reason for revert:
guard has now landed in chrome

Original issue's description:
> Revert of Revert[2] of "switch colorfilters to sk_sp (patchset #11 id:200001 of https://codereview.chromium.o… (patchset #3 id:40001 of https://codereview.chromium.org/1825073002/ )
>
> Reason for revert:
> CreateModeFilter not compiling
>
> Original issue's description:
> > Revert[2] of "switch colorfilters to sk_sp (patchset #11 id:200001 of https://codereview.chromium.org/1822623002/ )"
> >
> > Fixed legacy withColorFilter to call new(er) make method
> >
> > This reverts commit 1eb81db650.
> >
> > BUG=skia:
> > GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1825073002
> >
> > TBR=
> >
> > Committed: https://skia.googlesource.com/skia/+/4c9776b046dd5e9e46e2d1ce35154855c8fcb381
>
> TBR=
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/d6889293dd0942f27f9593f679722c956831f2c4

TBR=
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=skia:

Review URL: https://codereview.chromium.org/1827433002
2016-03-22 10:17:23 -07:00

97 lines
2.7 KiB
C++

/*
* Copyright 2008 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkBlurDrawLooper_DEFINED
#define SkBlurDrawLooper_DEFINED
#include "SkDrawLooper.h"
#include "SkColor.h"
class SkMaskFilter;
class SkColorFilter;
/** \class SkBlurDrawLooper
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?
*/
class SK_API SkBlurDrawLooper : public SkDrawLooper {
public:
enum BlurFlags {
kNone_BlurFlag = 0x00,
/**
The blur layer's dx/dy/radius aren't affected by the canvas
transform.
*/
kIgnoreTransform_BlurFlag = 0x01,
kOverrideColor_BlurFlag = 0x02,
kHighQuality_BlurFlag = 0x04,
/** mask for all blur flags */
kAll_BlurFlag = 0x07
};
static sk_sp<SkDrawLooper> Make(SkColor color, SkScalar sigma, SkScalar dx, SkScalar dy,
uint32_t flags = kNone_BlurFlag) {
return sk_sp<SkDrawLooper>(new SkBlurDrawLooper(color, sigma, dx, dy, flags));
}
#ifdef SK_SUPPORT_LEGACY_MINOR_EFFECT_PTR
static SkDrawLooper* Create(SkColor color, SkScalar sigma, SkScalar dx, SkScalar dy,
uint32_t flags = kNone_BlurFlag) {
return Make(color, sigma, dx, dy, flags).release();
}
#endif
virtual ~SkBlurDrawLooper();
SkDrawLooper::Context* createContext(SkCanvas*, void* storage) const override;
size_t contextSize() const override { return sizeof(BlurDrawLooperContext); }
SK_TO_STRING_OVERRIDE()
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBlurDrawLooper)
protected:
SkBlurDrawLooper(SkColor color, SkScalar sigma, SkScalar dx, SkScalar dy,
uint32_t flags);
void flatten(SkWriteBuffer&) const override;
bool asABlurShadow(BlurShadowRec*) const override;
private:
SkMaskFilter* fBlur;
sk_sp<SkColorFilter> fColorFilter;
SkScalar fDx, fDy, fSigma;
SkColor fBlurColor;
uint32_t fBlurFlags;
enum State {
kBeforeEdge,
kAfterEdge,
kDone
};
class BlurDrawLooperContext : public SkDrawLooper::Context {
public:
explicit BlurDrawLooperContext(const SkBlurDrawLooper* looper);
bool next(SkCanvas* canvas, SkPaint* paint) override;
private:
const SkBlurDrawLooper* fLooper;
State fState;
};
void init(SkScalar sigma, SkScalar dx, SkScalar dy, SkColor color, uint32_t flags);
void initEffects();
typedef SkDrawLooper INHERITED;
};
#endif