CSSTUDIO-2412 Linear Meter bugfix: fix concurrency issue + improve performance #3018
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This PR fixes a concurrency issue in the Linear Meter:
redrawIndicator()
was called on different threads leading to exceptions being thrown. This PR changes the strategy for thread-safety: instead of using thesynchronized
keyword, relevant parts of the code are always run on the JavaFX application thread using the new helper functionrunOnJavaFXThread()
.This PR also improves the performance of the Linear Meter widget in certain situations by avoiding unnecessary calls to
setRange()
.