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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef _SkTestImageFilters_h
#define _SkTestImageFilters_h
#include "SkImageFilter.h"
#include "SkPoint.h"
// Fun mode that scales down (only) and then scales back up to look pixelated
class SK_API SkDownSampleImageFilter : public SkImageFilter {
public:
static sk_sp<SkImageFilter> Make(SkScalar scale, sk_sp<SkImageFilter> input) {
if (!SkScalarIsFinite(scale)) {
return nullptr;
}
// we don't support scale in this range
if (scale > SK_Scalar1 || scale <= 0) {
return nullptr;
}
return sk_sp<SkImageFilter>(new SkDownSampleImageFilter(scale, std::move(input)));
}
SK_TO_STRING_OVERRIDE()
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDownSampleImageFilter)
#ifdef SK_SUPPORT_LEGACY_IMAGEFILTER_PTR
static SkImageFilter* Create(SkScalar scale, SkImageFilter* input = nullptr) {
return Make(scale, sk_ref_sp<SkImageFilter>(input)).release();
}
#endif
protected:
void flatten(SkWriteBuffer&) const override;
sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* source, const Context&,
SkIPoint* offset) const override;
private:
SkDownSampleImageFilter(SkScalar scale, sk_sp<SkImageFilter> input)
: INHERITED(&input, 1, nullptr), fScale(scale) {}
SkScalar fScale;
typedef SkImageFilter INHERITED;
};
#endif
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