59ccef695c
update dox for SkEmptyShader git-svn-id: http://skia.googlecode.com/svn/trunk@2817 2bbb7eff-a529-9590-31e7-b0007b416f81
44 lines
1.2 KiB
C++
44 lines
1.2 KiB
C++
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/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkEmptyShader_DEFINED
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#define SkEmptyShader_DEFINED
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#include "SkShader.h"
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/**
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* \class SkEmptyShader
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* A Shader that always draws nothing. Its setContext always returns false,
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* so it never expects that its shadeSpan() methods will get called.
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*/
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class SK_API SkEmptyShader : public SkShader {
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public:
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SkEmptyShader() {}
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virtual uint32_t getFlags() SK_OVERRIDE;
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virtual uint8_t getSpan16Alpha() const SK_OVERRIDE;
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virtual bool setContext(const SkBitmap&, const SkPaint&,
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const SkMatrix&) SK_OVERRIDE;
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virtual void shadeSpan(int x, int y, SkPMColor span[], int count) SK_OVERRIDE;
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virtual void shadeSpan16(int x, int y, uint16_t span[], int count) SK_OVERRIDE;
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virtual void shadeSpanAlpha(int x, int y, uint8_t alpha[], int count) SK_OVERRIDE;
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protected:
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SkEmptyShader(SkFlattenableReadBuffer&);
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virtual Factory getFactory() SK_OVERRIDE;
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virtual void flatten(SkFlattenableWriteBuffer&) SK_OVERRIDE;
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private:
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typedef SkShader INHERITED;
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};
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#endif
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