How to use rsvg_handle_render from lua

[elusian]

In Conky v1.13 the functions rsvg_handle_render_cairo(_sub) were removed and replaced with rsvg_handle_render_document/layer, which now take a RsvgRectangle argument for the viewport.
How do I actually create that struct from lua?

Passing a table with the correct arguments does not work ("assertion '!viewport.is_null()' failed") and the "constructors" that tolua++ should (as far as I understand) create are not available (RsvgRectangle() does not work because it is not callable, RsvgRectangle:new is nil).

I'm probably missing something very obvious (I don't have much experience with tolua++), but any help is appreciated.

[brndnmtthws]

This should resolve it: #1263

When I updated this, I forgot to add the necessary methods.

Now you'll be able to create/destroy:

rect = RsvgRectangle::create() -- creates rectangle
rect:destroy();                -- destroys rectangle


-- alternatively, let Lua manage the memory:
rect = RsvgRectangle::create()
tolua.takeownership(rect)
-- now Lua will free the object when it goes out of scope

It's my bad for forgetting to add those methods.

[elusian]

Thank you!