blob: c68b2ac91135136c89fcf7c611bbde24a5708a20 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
/*
* Copyright 2006 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkMaskFilter_DEFINED
#define SkMaskFilter_DEFINED
#include "SkCoverageMode.h"
#include "SkFlattenable.h"
class SkString;
/** \class SkMaskFilter
SkMaskFilter is the base class for object that perform transformations on
the mask before drawing it. An example subclass is Blur.
*/
class SK_API SkMaskFilter : public SkFlattenable {
public:
/**
* Construct a maskfilter whose effect is to first apply the inner filter and then apply
* the outer filter to the result of the inner's. Returns nullptr on failure.
*/
static sk_sp<SkMaskFilter> MakeCompose(sk_sp<SkMaskFilter> outer, sk_sp<SkMaskFilter> inner);
/**
* Compose two maskfilters together using a coverage mode. Returns nullptr on failure.
*/
static sk_sp<SkMaskFilter> MakeCombine(sk_sp<SkMaskFilter> filterA, sk_sp<SkMaskFilter> filterB,
SkCoverageMode mode);
SK_TO_STRING_PUREVIRT()
SK_DEFINE_FLATTENABLE_TYPE(SkMaskFilter)
private:
static void InitializeFlattenables();
friend class SkFlattenable;
};
#endif
|
