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### Problem Letting go of the modifier key before the last momentum-scroll events arrive will cause the scroll direction to change. This problem can be seen by going to egui.rs and opening the "Scene" example. Hold down shift, start a momentum-scroll (on a Mac trackpad), then quickly let go of shift: you'll see the scroll direction change, which feels wrong. ### Solution Store the modifiers at the start of the event, thanks to the new `phase` info added in * https://github.com/emilk/egui/pull/7669 Note that this solution only works on native; not on web. ### Other * Break out wheel/scroll handling into own file * Simplify it a lot by deciding late on wether an input is a scroll or a zoom * Assume input is already smooth if there are `phase` events