Partly reimplemented Graph event handling + bugfix...
Partly reimplemented Graph event handling + bugfix
- Now pure UX scroll doesn't affect variable delta T
- Now all events are captured by VisualizationGraphWidget(VGW) this avoid
that QCP intercept them then FW them to VGW which interact back with QCP
- Non transformation events a broken for now
- Added keyboard navigation
Signed-off-by: Alexis Jeandet <alexis.jeandet@member.fsf.org>