/*
|
* Copyright 2013 Google Inc.
|
*
|
* Use of this source code is governed by a BSD-style license that can be
|
* found in the LICENSE file.
|
*/
|
|
#ifndef SkAlphaThresholdFilter_DEFINED
|
#define SkAlphaThresholdFilter_DEFINED
|
|
#include "SkImageFilter.h"
|
|
class SkRegion;
|
|
class SK_API SkAlphaThresholdFilter {
|
public:
|
/**
|
* Creates an image filter that samples a region. If the sample is inside the
|
* region the alpha of the image is boosted up to a threshold value. If it is
|
* outside the region then the alpha is decreased to the threshold value.
|
* The 0,0 point of the region corresponds to the upper left corner of the
|
* source image.
|
*/
|
static sk_sp<SkImageFilter> Make(const SkRegion& region, SkScalar innerMin,
|
SkScalar outerMax, sk_sp<SkImageFilter> input,
|
const SkImageFilter::CropRect* cropRect = nullptr);
|
|
|
static void RegisterFlattenables();
|
};
|
|
#endif
|
