43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
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/*
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* Copyright 2016 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkArithmeticModePriv_DEFINED
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#define SkArithmeticModePriv_DEFINED
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#include "SkArithmeticMode.h"
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#ifndef SK_SUPPORT_LEGACY_ARITHMETICMODE
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class SK_API SkArithmeticMode {
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public:
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/**
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* result = clamp[k1 * src * dst + k2 * src + k3 * dst + k4]
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*
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* k1=k2=k3=0, k4=1.0 results in returning opaque white
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* k1=k3=k4=0, k2=1.0 results in returning the src
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* k1=k2=k4=0, k3=1.0 results in returning the dst
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*/
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static sk_sp<SkXfermode> Make(SkScalar k1, SkScalar k2, SkScalar k3, SkScalar k4,
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bool enforcePMColor = true);
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#ifdef SK_SUPPORT_LEGACY_XFERMODE_PTR
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static SkXfermode* Create(SkScalar k1, SkScalar k2,
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SkScalar k3, SkScalar k4,
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bool enforcePMColor = true) {
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return Make(k1, k2, k3, k4, enforcePMColor).release();
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}
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#endif
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SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP();
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private:
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SkArithmeticMode(); // can't be instantiated
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};
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#endif
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#endif
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