Reacting to changes in width/height about cljfx HOT 7 CLOSED

Yep, that's what I do. Not 100% happy about it, but it works good enough.

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I released a new version 1.6.7 which adds :on-width-changed and :on-height-changed props for a scene as well: it does not include window title bar.

Some day I'll go through all read-only properties and add change listener props for them...

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Lifecycle is a behavior that manages how things get created from description, changed to other value from previously created when description changes, and destroyed when description no longer exists. There are many of them for different kinds of situations.
As a user, you can consider lifecycle/event-handler and lifecycle/change-listener an implementation details that are irrelevant and just remeber this rule: all props for observing changes accept either a function or a map:

;; with this description it'll print whenever width is changed, useful for 
;; trying props for observing changes

{:fx/type :stage
 :on-width-changed #(prn :on-width-changed %)}

;; with this description your map event handler will receive map like 
;; {:foo "bar" :fx/event new-value}

{:fx/type :stage
 :on-width-changed {:foo "bar"}}

Hooking up another entry in my event handler multimethod doesn't seem to be working properly

Can you tell me how it is not working properly? Your renderer setup looks perfectly fine, I think, the only thing I would have changed there is replace (fx/wrap-map-desc assoc :fx/type root) with (fx/wrap-map-desc #(assoc % :fx/type root)) so it will access root through var lookup: it allows redefining root during development be reflected in app updates.

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I guess I was on the right track :) The issue turned out to be just an old version of cljfx that didn't have that property. Now everything is hooked up and working sorta

In your workflow how do you typically go about inspecting the available props from the REPL? Do you just open up the cljfx source a poke around?

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Thanks again for your help and guidance :)

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Hey @vlaaad , I think I found a lingering issue with using :on-height-changed stage/window events

It seem to ends up including the height of the window titlebar. And there is no clear way to subtract the title bar size. I can bake in some value for my machine, but the title bar will change between machines?

Do you have some workaround for tracking the actual size of the scene?

it's a bit silly, but I have a sub element that is rendered in a separate library, so i need to calculate the size it has available and then render it to the correct size so it fits

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Thank you for pushing that addition :)) . I'm sorry I'm not able to make a PR myself. I'm still trying to grok the internals

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