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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkBlendMode_DEFINED
#define SkBlendMode_DEFINED
#include "SkTypes.h"
enum class SkBlendMode {
kClear, //!< [0, 0]
kSrc, //!< [Sa, Sc]
kDst, //!< [Da, Dc]
kSrcOver, //!< [Sa + Da * (1 - Sa), Sc + Dc * (1 - Sa)]
kDstOver, //!< [Da + Sa * (1 - Da), Dc + Sc * (1 - Da)]
kSrcIn, //!< [Sa * Da, Sc * Da]
kDstIn, //!< [Da * Sa, Dc * Sa]
kSrcOut, //!< [Sa * (1 - Da), Sc * (1 - Da)]
kDstOut, //!< [Da * (1 - Sa), Dc * (1 - Sa)]
kSrcATop, //!< [Da, Sc * Da + Dc * (1 - Sa)]
kDstATop, //!< [Sa, Dc * Sa + Sc * (1 - Da)]
kXor, //!< [Sa + Da - 2 * Sa * Da, Sc * (1 - Da) + Dc * (1 - Sa)]
kPlus, //!< [Sa + Da, Sc + Dc]
kModulate, // multiplies all components (= alpha and color)
// Following blend modes are defined in the CSS Compositing standard:
// https://dvcs.w3.org/hg/FXTF/rawfile/tip/compositing/index.html#blending
kScreen,
kLastCoeffMode = kScreen,
kOverlay,
kDarken,
kLighten,
kColorDodge,
kColorBurn,
kHardLight,
kSoftLight,
kDifference,
kExclusion,
kMultiply,
kLastSeparableMode = kMultiply,
kHue,
kSaturation,
kColor,
kLuminosity,
kLastMode = kLuminosity
};
/**
* Return the (c-string) name of the blendmode.
*/
SK_API const char* SkBlendMode_Name(SkBlendMode);
#endif
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