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author | Florin Malita <fmalita@chromium.org> | 2017-05-25 15:29:13 -0400 |
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committer | Skia Commit-Bot <skia-commit-bot@chromium.org> | 2017-05-25 20:05:08 +0000 |
commit | fabe0b26d05624ce7374f6ca89bd66df6142534e (patch) | |
tree | f32b5873b31185d7e86e6c48fbdbd654efb8af7a /src/shaders/SkEmptyShader.h | |
parent | 1c214313248a4b5a69af14539608c54fb67c2bf8 (diff) |
Relocate shaders to own dir
Consolidate all shader impls under src/shaders/.
Change-Id: I450e37541214704c1ad9e379d9d753b7cc62fac3
Reviewed-on: https://skia-review.googlesource.com/17927
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Herb Derby <herb@google.com>
Diffstat (limited to 'src/shaders/SkEmptyShader.h')
-rw-r--r-- | src/shaders/SkEmptyShader.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/shaders/SkEmptyShader.h b/src/shaders/SkEmptyShader.h new file mode 100644 index 0000000000..c1bcfe0957 --- /dev/null +++ b/src/shaders/SkEmptyShader.h @@ -0,0 +1,41 @@ +/* + * 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 "SkShaderBase.h" + +// TODO: move this to private, as there is a public factory on SkShader + +/** + * \class SkEmptyShader + * A Shader that always draws nothing. Its createContext always returns nullptr. + */ +class SK_API SkEmptyShader : public SkShaderBase { +public: + SkEmptyShader() {} + + SK_TO_STRING_OVERRIDE() + SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkEmptyShader) + +protected: + Context* onMakeContext(const ContextRec&, SkArenaAlloc*) const override { + return nullptr; + } + + void flatten(SkWriteBuffer& buffer) const override { + // Do nothing. + // We just don't want to fall through to SkShader::flatten(), + // which will write data we don't care to serialize or decode. + } + +private: + typedef SkShaderBase INHERITED; +}; + +#endif |