lazyContainerDataSource.h
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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 
27 #include "pxr/imaging/hd/dataSource.h"
28 
29 PXR_NAMESPACE_OPEN_SCOPE
30 
37 {
38 public:
39  HD_DECLARE_DATASOURCE(HdLazyContainerDataSource);
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 
62 PXR_NAMESPACE_CLOSE_SCOPE
63 
64 #endif
HD_API HdDataSourceBaseHandle Get(const TfToken &name) override
Returns the child datasource of the given name.
HD_API TfTokenVector GetNames() override
Returns the list of names for which Get(...) is expected to return a non-null value.
A datasource representing structured (named, hierarchical) data, for example a geometric primitive or...
Definition: dataSource.h:110
Token for efficient comparison, assignment, and hashing of known strings.
Definition: token.h:87
std::vector< TfToken > TfTokenVector
Convenience types.
Definition: token.h:442
A container data source lazily evaluating the given thunk to forward all calls to the container data ...