[kmymoney] [Bug 421056] New: Freeze: logarithmic vertical axis and negative data range from

[Robert Szczesiak]

https://bugs.kde.org/show_bug.cgi?id=421056

            Bug ID: 421056
           Summary: Freeze: logarithmic vertical axis and negative data
                    range from
           Product: kmymoney
           Version: git (master)
          Platform: Manjaro
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: reports
          Assignee: kmymoney-devel at kde.org
          Reporter: dev.rszczesiak at gmail.com
  Target Milestone: ---

Created attachment 128173
  --> https://bugs.kde.org/attachment.cgi?id=128173&action=edit
Custom report configuration windows just before clicking 'Apply'

SUMMARY
KMyMoney freezes when user tries to create a custom Net Worth Graph report
chart with 'Logarithmic vertical axis' option checked and user defined Data
range with From set to a negative value.

STEPS TO REPRODUCE
1. Go to Reports -> Net Worth Graph and click the 'Configure' button.
2. In the Report -> Chart tab enable 'Logarithmic vertical axis' checkbox.
3. In the Report -> Range tab select Range: User defined, then input a negative
>From value.
4. Click the Apply button.

OBSERVED RESULT
KMyMoney freezes and after a longer while a warning window appears, saying:
Application "kmymoney" is not responding. 

EXPECTED RESULT
User should not be allowed to enter data range From and To values lower than
zero when using logarithmic vertical axis. Zero value should be handled as "0"
might mean incomplete positive value, e.g. "0.1".

SOFTWARE/OS VERSIONS
KDE Plasma Version: 5.18.4
KDE Frameworks Version: 5.69.0
Qt Version: 5.14.2

ADDITIONAL INFORMATION
Please find attached screenshots presenting the issue.

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