overlayContainerDataSource.h

//
// Copyright 2021 Pixar
//
// Licensed under the terms set forth in the LICENSE.txt file available at
// https://openusd.org/license.
//
#ifndef PXR_IMAGING_HD_OVERLAY_CONTAINER_DATA_SOURCE_H
#define PXR_IMAGING_HD_OVERLAY_CONTAINER_DATA_SOURCE_H
 
#include "pxr/imaging/hd/dataSource.h"
 
PXR_NAMESPACE_OPEN_SCOPE
 
class HdOverlayContainerDataSource : public HdContainerDataSource
{
public:
    HD_DECLARE_DATASOURCE(HdOverlayContainerDataSource);
 
    HD_DECLARE_DATASOURCE_INITIALIZER_LIST_NEW(
            HdOverlayContainerDataSource, 
            HdContainerDataSourceHandle);
 
    HD_API
    HdOverlayContainerDataSource(
        std::initializer_list<HdContainerDataSourceHandle> sources);
 
    HD_API
    HdOverlayContainerDataSource(
        size_t count,
        HdContainerDataSourceHandle *containers);
 
    HD_API
    HdOverlayContainerDataSource(
        const HdContainerDataSourceHandle &src1,
        const HdContainerDataSourceHandle &src2);
 
    HD_API
    HdOverlayContainerDataSource(
        const HdContainerDataSourceHandle &src1,
        const HdContainerDataSourceHandle &src2,
        const HdContainerDataSourceHandle &src3);
    
    HD_API
    static
    HdContainerDataSourceHandle
    OverlayedContainerDataSources(
        const HdContainerDataSourceHandle &src1,
        const HdContainerDataSourceHandle &src2);
 
    HD_API
    TfTokenVector GetNames() override;
    HD_API
    HdDataSourceBaseHandle Get(const TfToken &name) override;
 
private:
    using _ContainerVector = TfSmallVector<HdContainerDataSourceHandle, 8>;
    _ContainerVector _containers;
};
 
HD_DECLARE_DATASOURCE_HANDLES(HdOverlayContainerDataSource);
 
PXR_NAMESPACE_CLOSE_SCOPE
 
#endif