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REVISION SUMMARY BUG: 417454 The emojier fairly slow. Launching is slow. Resizing the window is slow. Changing pages is slow. Scrolling is also slow. On launch, the sidebar widens from `0px`, resizing the `GridView`, which resizes `cellWidth` as we abuse it's the width calculation to create cell spacing. Resizing 1000 emoji Labels is slow. This also happens when you resize the window. The cpu core spikes to 100% (on a 2.8Ghz cpu). F8098605: screen-2020-02-11_18.21.04.mp4 <https://phabricator.kde.org/F8098605> After selecting an emoji, closing, and reopening, the recent emoji's is shown first (without a search box) which opens faster since it has much less work. However switching to the all emoji page resurfaces the problem. Scrolling is also a problem, as loading the emoji `QQC2.Label`s is slow. So we'll use a `Loader { asynchronous: true }`. I'm not sure why it loads them from bottom to top. Here's what it looks like after this patch. Resizing no longer blocks, nor does scrolling. F8098612: screen-2020-02-11_18.18.37.mp4 <https://phabricator.kde.org/F8098612> TEST PLAN How I compile and run emojier by itself: https://gist.github.com/Zren/1d16e51199c9e47718ccfe41755d8ee2 REPOSITORY R119 Plasma Desktop REVISION DETAIL https://phabricator.kde.org/D27337 AFFECTED FILES applets/kimpanel/backend/ibus/emojier/ui/CategoryPage.qml To: Zren Cc: plasma-devel, Orage, LeGast00n, The-Feren-OS-Dev, cblack, jraleigh, zachus, fbampaloukas, GB_2, ragreen, ZrenBot, ngraham, alexeymin, himcesjf, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, ahiemstra, mart
