1/*
2 * Copyright 2015 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 SkXfermodeInterpretation_DEFINED
9#define SkXfermodeInterpretation_DEFINED
10
11class SkPaint;
12
13/**
14 *  By analyzing the paint, we may decide we can take special
15 *  action. This enum lists our possible actions.
16 */
17enum SkXfermodeInterpretation {
18    kNormal_SkXfermodeInterpretation,      //< draw normally
19    kSrcOver_SkXfermodeInterpretation,     //< draw as if in srcover mode
20    kSkipDrawing_SkXfermodeInterpretation  //< draw nothing
21};
22
23/**
24 *  Given a paint, determine whether the paint's transfer mode can be
25 *  replaced with kSrcOver_Mode or not drawn at all.  This is used by
26 *  SkBlitter and SkPDFDevice.
27 */
28SkXfermodeInterpretation SkInterpretXfermode(const SkPaint&, bool dstIsOpaque);
29
30#endif  // SkXfermodeInterpretation_DEFINED
31