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/*
* Copyright 2013 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 SkXfermodeImageFilter_DEFINED
#define SkXfermodeImageFilter_DEFINED
#include "SkArithmeticImageFilter.h"
#include "SkBlendMode.h"
#include "SkImageFilter.h"
/**
* This filter takes a SkBlendMode, and uses it to composite the foreground over the background.
* If foreground or background is NULL, the input bitmap (src) is used instead.
*/
class SK_API SkXfermodeImageFilter {
public:
static sk_sp<SkImageFilter> Make(SkBlendMode, sk_sp<SkImageFilter> background,
sk_sp<SkImageFilter> foreground,
const SkImageFilter::CropRect* cropRect);
static sk_sp<SkImageFilter> Make(SkBlendMode mode, sk_sp<SkImageFilter> background) {
return Make(mode, std::move(background), nullptr, nullptr);
}
// Arithmetic image filtering used to be implemented using SkXfermode. Some clients still rely
// on these factories existing in this class.
static sk_sp<SkImageFilter> MakeArithmetic(float k1, float k2, float k3, float k4,
bool enforcePMColor, sk_sp<SkImageFilter> background,
sk_sp<SkImageFilter> foreground,
const SkImageFilter::CropRect* cropRect) {
return SkArithmeticImageFilter::Make(k1, k2, k3, k4, enforcePMColor, std::move(background),
std::move(foreground), cropRect);
}
static sk_sp<SkImageFilter> MakeArithmetic(float k1, float k2, float k3, float k4,
bool enforcePMColor,
sk_sp<SkImageFilter> background) {
return SkArithmeticImageFilter::Make(k1, k2, k3, k4, enforcePMColor, std::move(background));
}
SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP();
private:
SkXfermodeImageFilter(); // can't instantiate
};
#endif
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