[Kst] [Bug 86869] New: Zooming out too far is allowed

[Rick Chern]

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http://bugs.kde.org/show_bug.cgi?id=86869      
           Summary: Zooming out too far is allowed
           Product: kst
           Version: unspecified
          Platform: Compiled Sources
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: kst kde org
        ReportedBy: rchern interchange ubc ca


Version:           0.99-devel (using KDE KDE 3.2.1)
Installed from:    Compiled From Sources
Compiler:          gcc (GCC) 3.3.2 20031022  
OS:                Linux

Zooming out to a minimum or maximum limit of infinity is allowed.

How to reproduce:
- start kst
- create a plot with our without items in it
- change to log X axis mode
- hold down shift and move mouse wheel down to zoom out a few times

Eventually the x axis labels will disappear, and opening the Axes tab of the plot dialog shows an upper limit of inf.  
Zooming in is then not possible until the limits are manually changed.  Zooming in subsequently causes the lower/upper limits to change to some combination of NAN and INF.

This also happens in non-log mode, but takes longer to reproduce.
In addition, entering a very large number for the limits in the plot dialog has the same effect.