Mike Reed | 403d154 | 2016-09-26 18:51:24 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016 Google Inc. |
| 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 SkArithmeticModePriv_DEFINED |
| 9 | #define SkArithmeticModePriv_DEFINED |
| 10 | |
| 11 | #include "SkArithmeticMode.h" |
| 12 | |
| 13 | #ifndef SK_SUPPORT_LEGACY_ARITHMETICMODE |
| 14 | |
| 15 | class SK_API SkArithmeticMode { |
| 16 | public: |
| 17 | /** |
| 18 | * result = clamp[k1 * src * dst + k2 * src + k3 * dst + k4] |
| 19 | * |
| 20 | * k1=k2=k3=0, k4=1.0 results in returning opaque white |
| 21 | * k1=k3=k4=0, k2=1.0 results in returning the src |
| 22 | * k1=k2=k4=0, k3=1.0 results in returning the dst |
| 23 | */ |
| 24 | static sk_sp<SkXfermode> Make(SkScalar k1, SkScalar k2, SkScalar k3, SkScalar k4, |
| 25 | bool enforcePMColor = true); |
| 26 | #ifdef SK_SUPPORT_LEGACY_XFERMODE_PTR |
| 27 | static SkXfermode* Create(SkScalar k1, SkScalar k2, |
| 28 | SkScalar k3, SkScalar k4, |
| 29 | bool enforcePMColor = true) { |
| 30 | return Make(k1, k2, k3, k4, enforcePMColor).release(); |
| 31 | } |
| 32 | #endif |
| 33 | |
| 34 | SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP(); |
| 35 | |
| 36 | private: |
| 37 | SkArithmeticMode(); // can't be instantiated |
| 38 | }; |
| 39 | |
| 40 | #endif |
| 41 | |
| 42 | #endif |