Timothy Flynn 35b74ebbfc LibGUI: Defer loading emoji icons until their first paint event ...

The EmojiInputDialog re-uses emoji buttons to help with performance as
filters are applied / removed. The downside of pre-creating the buttons
is that it currently takes upwards of 600ms (on my machine) to load all
emoji icons from disk at once. This will only become worse over time as
more emoji are added.

To alleviate this, defer loading the icons until they are needed for
painting (i.e. come into view).

2022-09-16 15:20:59 +02:00

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