55 lines
2.5 KiB
XML
55 lines
2.5 KiB
XML
<?xml version="1.0" encoding="UTF-8" ?>
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<class name="EditorResourcePreviewGenerator" inherits="RefCounted" version="4.0">
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<brief_description>
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Custom generator of previews.
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</brief_description>
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<description>
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Custom code to generate previews. Please check [code]file_dialog/thumbnail_size[/code] in [EditorSettings] to find out the right size to do previews at.
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</description>
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<tutorials>
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</tutorials>
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<methods>
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<method name="_can_generate_small_preview" qualifiers="virtual const">
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<return type="bool" />
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<description>
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If this function returns [code]true[/code], the generator will call [method _generate] or [method _generate_from_path] for small previews as well.
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By default, it returns [code]false[/code].
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</description>
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</method>
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<method name="_generate" qualifiers="virtual const">
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<return type="Texture2D" />
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<argument index="0" name="resource" type="Resource" />
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<argument index="1" name="size" type="Vector2i" />
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<description>
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Generate a preview from a given resource with the specified size. This must always be implemented.
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Returning an empty texture is an OK way to fail and let another generator take care.
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Care must be taken because this function is always called from a thread (not the main thread).
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</description>
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</method>
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<method name="_generate_from_path" qualifiers="virtual const">
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<return type="Texture2D" />
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<argument index="0" name="path" type="String" />
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<argument index="1" name="size" type="Vector2i" />
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<description>
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Generate a preview directly from a path with the specified size. Implementing this is optional, as default code will load and call [method _generate].
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Returning an empty texture is an OK way to fail and let another generator take care.
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Care must be taken because this function is always called from a thread (not the main thread).
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</description>
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</method>
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<method name="_generate_small_preview_automatically" qualifiers="virtual const">
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<return type="bool" />
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<description>
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If this function returns [code]true[/code], the generator will automatically generate the small previews from the normal preview texture generated by the methods [method _generate] or [method _generate_from_path].
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By default, it returns [code]false[/code].
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</description>
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</method>
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<method name="_handles" qualifiers="virtual const">
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<return type="bool" />
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<argument index="0" name="type" type="String" />
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<description>
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Returns [code]true[/code] if your generator supports the resource of type [code]type[/code].
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</description>
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</method>
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</methods>
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</class>
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