ce56d96506
patch from issue 267923005 BUG=skia: R=scroggo@google.com Author: reed@google.com Review URL: https://codereview.chromium.org/261773005 git-svn-id: http://skia.googlecode.com/svn/trunk@14573 2bbb7eff-a529-9590-31e7-b0007b416f81
44 lines
1.1 KiB
C++
44 lines
1.1 KiB
C++
/*
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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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// TODO: move this to private, as there is a public factory on SkShader
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/**
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* \class SkEmptyShader
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* A Shader that always draws nothing. Its createContext always returns NULL.
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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 size_t contextSize() const SK_OVERRIDE {
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// Even though createContext returns NULL we have to return a value of at least
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// sizeof(SkShader::Context) to satisfy SkSmallAllocator.
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return sizeof(SkShader::Context);
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}
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SK_TO_STRING_OVERRIDE()
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SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkEmptyShader)
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protected:
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SkEmptyShader(SkReadBuffer& buffer) : INHERITED(buffer) {}
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virtual SkShader::Context* onCreateContext(const ContextRec&, void*) const SK_OVERRIDE {
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return NULL;
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}
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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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