RFR: 8262023: Scrolled button is pressed using Monocle on Raspberry Pi with Touchscreen

[John Neffenger]

On Fri, 26 Feb 2021 13:58:01 GMT, Johan Vos <jvos at openjdk.org> wrote:

> What is the expected behavior?

I think that's why I never raised the issue. I let the bug train me to avoid it! For better or for worse, I think the only answer to your question is whatever Android and iOS do. After playing around with the JavaFX test buttons on the touchscreen, I finally tried the same thing on my Android phone, and there it worked just as one would expect. I didn't have to be *careful* at all.

As far as I can tell, on Android the rule is simple: the button fires only when it's released within a very small radius of where it was first touched. Furthermore, the button never fires at all if it was ever dragged at all. I'll try on an old iPad next.

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PR: https://git.openjdk.java.net/jfx/pull/406