blob: 13da457ad481b692f01cf65328c30a81ce911f3b (
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
|
/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkEmptyShader_DEFINED
#define SkEmptyShader_DEFINED
#include "SkShader.h"
/**
* \class SkEmptyShader
* A Shader that always draws nothing. Its setContext always returns false,
* so it never expects that its shadeSpan() methods will get called.
*/
class SK_API SkEmptyShader : public SkShader {
public:
SkEmptyShader() {}
virtual uint32_t getFlags() SK_OVERRIDE;
virtual uint8_t getSpan16Alpha() const SK_OVERRIDE;
virtual bool setContext(const SkBitmap&, const SkPaint&,
const SkMatrix&) SK_OVERRIDE;
virtual void shadeSpan(int x, int y, SkPMColor span[], int count) SK_OVERRIDE;
virtual void shadeSpan16(int x, int y, uint16_t span[], int count) SK_OVERRIDE;
virtual void shadeSpanAlpha(int x, int y, uint8_t alpha[], int count) SK_OVERRIDE;
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkEmptyShader)
protected:
SkEmptyShader(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {}
private:
typedef SkShader INHERITED;
};
#endif
|
