How to use custom icon in TreeDecorator

#1

Hi,
I want to mark some file with an icon in my file tree, code as follow, everything is ok when I use builtin codion

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image1261×701 38 KB

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now I want to use my custom icon, but it does not show in the tree, does the tree decorator only support built-in codicon?
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image1074×191 12.2 KB

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I have tested my custom icon in the toolbar, it is okay toolbar
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#2

@wss Codicons use a ::before selector that is well tested with the tree items. I’m not sure using the css background property has any effect on tree item decorators.