JavaFX multi-touch support under Linux
Ruíz Martín, Ricardo
rrmartin at indra.es
Tue May 6 16:57:43 UTC 2014
We are trying adding direct multitouch interaction support for our JavaFX application and we are facing some multi-touch support issues under Linux.
Under Windows all touch events are propagated (zoom, rotate, swipe, touch...), but although windows can be a development solution for us, we would need final version running under Linux.
We have tried different distributions (mainly RedHat beta7 and Ubuntu 14.04) and only events we get from JavaFX are Mouse events generated by multi-touch screen.
There are a Jira Issue about this (with some others duplicate issues):
But there are no timeline or Fix version.
Searching for some workaround we have found that OpenJfx has Raspberry Pi multitouch support in ARM linux JVM runtime.
It seems that this support is because ARM JVM does not use X11 and/or GTK, but only device drivers, and it should be possible build OpenJFX with this configuration for x86 (I suppose this should work on 64 bits too.) With this build we should use EGL/X11 for full-screen output but we would get inputs from dev/input.
So we have tried build OpenJFX with -PCOMPILE_TARGETS=x86egl because we can get touch events from /dev/input/eventX in evtest with no problems.
Unfortunately although we can build OpenJFX for linux with no target, when we use this compile target build fails:
We are stuck now with this.
Is there any other way for getting multitouch events with JavaFX under Linux?
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