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lazyContainerDataSource.h
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2 // Copyright 2022 Pixar
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24 #ifndef PXR_IMAGING_HD_LAZY_CONTAINER_DATA_SOURCE_H
25 #define PXR_IMAGING_HD_LAZY_CONTAINER_DATA_SOURCE_H
26 
28 
30 
31 /// \class HdLazyContainerDataSource
32 ///
33 /// A container data source lazily evaluating the given thunk to
34 /// forward all calls to the container data source computed by the thunk.
35 ///
37 {
38 public:
40 
41  using Thunk = std::function<HdContainerDataSourceHandle()>;
42 
43  HD_API
44  TfTokenVector GetNames() override;
45  HD_API
46  HdDataSourceBaseHandle Get(const TfToken &name) override;
47 
48  HD_API
50 
51 protected:
52  HD_API
53  HdLazyContainerDataSource(const Thunk &thunk);
54 
55 private:
56  HdContainerDataSourceHandle _GetSrc();
57 
58  Thunk _thunk;
59  HdContainerDataSourceAtomicHandle _src;
60 };
61 
63 
64 #endif
#define HD_API
Definition: api.h:40
HD_API HdLazyContainerDataSource(const Thunk &thunk)
std::function< HdContainerDataSourceHandle()> Thunk
HD_DECLARE_DATASOURCE(HdLazyContainerDataSource)
Definition: token.h:87
HD_API TfTokenVector GetNames() override
HD_API HdDataSourceBaseHandle Get(const TfToken &name) override
std::vector< TfToken > TfTokenVector
Convenience types.
Definition: token.h:457
GLuint const GLchar * name
Definition: glcorearb.h:786
PXR_NAMESPACE_CLOSE_SCOPE PXR_NAMESPACE_OPEN_SCOPE
Definition: path.h:1432
#define PXR_NAMESPACE_CLOSE_SCOPE
Definition: pxr.h:91