1 /* 2 * Copyright 2021 Google LLC 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef SkBlenders_DEFINED 9 #define SkBlenders_DEFINED 10 11 #include "include/core/SkBlender.h" 12 13 class SK_API SkBlenders { 14 public: 15 /** 16 * Create a blender that implements the following: 17 * k1 * src * dst + k2 * src + k3 * dst + k4 18 * @param k1, k2, k3, k4 The four coefficients. 19 * @param enforcePMColor If true, the RGB channels will be clamped to the calculated alpha. 20 */ 21 static sk_sp<SkBlender> Arithmetic(float k1, float k2, float k3, float k4, bool enforcePremul); 22 23 private: 24 SkBlenders() = delete; 25 }; 26 27 #endif 28