38063 sample transmission calculators DoubleSpinBoxes avoid commas

[warunawickramasingha]

Description of work

Under Single wavelength mode, the spin boxes for Low, Width, and High in the Sample Transmission Calculator interface had allowed its spin boxes to enter values such as 0,2.1 to include a blend of commas and decimal dot and this work is to avoid that.

In addition, this includes fixing two coverity issues in RotateSampleShape.cpp

Summary of work

Fixes #38063.

Further detail of work

To test:

1. Open the Sample Transmission Calculator interface from (Interfaces > General > Sample Transmission Calculator)
2. Enter a value containing comma in the DoubleSpinBoxes for any of Low, Width, and High fields ex: 2,3
3. The moment when the number following the comma is entered the the comma should be converted to a decimal dot.
4. Try entering different combinations of dot and comma and the same should be observed as in step 3

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[RichardWaiteSTFC]

Thanks for this.
I had a quick play around and it does seem to behave slightly differently when you use , instead of . - say I want to set a value of 1.35, if I type 1,35 the spin box is updated to 1.3 (i.e. misses the last digit). I wonder if that's because it editing mode if changed? can you reproduce this?

Could you try validating/cleaning the input after this slot instead (from the base class)?
https://doc.qt.io/qt-6/qabstractspinbox.html#editingFinished
It might not work...

[RichardWaiteSTFC]

Also thanks for fixing the coverity issues on RotateSampleShape - I'm happy not to do these minor changes in a separate PR if the gatekeepers agree!

[warunawickramasingha]

Thanks for this. I had a quick play around and it does seem to behave slightly differently when you use , instead of . - say I want to set a value of 1.35, if I type 1,35 the spin box is updated to 1.3 (i.e. misses the last digit). I wonder if that's because it editing mode if changed? can you reproduce this?

Could you try validating/cleaning the input after this slot instead (from the base class)? https://doc.qt.io/qt-6/qabstractspinbox.html#editingFinished It might not work...

Thanks for the review! After observing that handling with editingFinished signal does not do the job, I have used lineEdit().setText() method to fix this behaviour.