RCP: 0.8.0, macosx, scaling with trackpad scrolling

The Jfreechart library seems to not manage correctly the scale using the mac os x trackpad.

Steps to reproduce

• create a CA
• scroll up or down with the trackpad
  =>the zoom that occurs is in both cases a zoom out

NOTE: can not be reproduced with a mouse on Mac os X 10.14 (SJ)
NOTE: can not be reproduced with a mouse on Mac os X 10. (MD)
NOTE: can be reproduced with trackpad on Mac os X 10. (MD)
NOTE: seems to occur also with mouse on 10.11 (JCD)

NOTE: can be reproduce with trackpad without TXM, running the basic jfreechart demos jar.

First indications

• I suspect Java to always receive 0 in MouseWheelEvent on OS X as number or rotations instead of positive or negative numbers defining the direction or the rotation
• It seems the bug does not occur in 0.7.9

(from redmine: issue id 2519, created on 2019/03/20 by Matthieu Decorde)

added charts type::bug + 1 deleted label

changed milestone to %TXM 0.8.0

See: https://bugs.openjdk.java.net/browse/JDK-8203048
Java bug involving touchpad events on Mac OS.

(from redmine: written on 2019/03/22 by Sebastien Jacquot)

Fixed by now embedding jre-8u151-macosx-x64.

(from redmine: written on 2019/03/22 by Sebastien Jacquot)

closed

assigned to @sjacquot