Review Request: New KSignalPlotter graph for plotting continuous data as it comes in

[John Tapsell]

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http://reviewboard.kde.org/r/1430/
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Review request for kdelibs.


Summary
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This is used by KSysGuard to plot network usage etc.  I want to make it available for other people to use.

It is really quite feature-full, and uses a sliding window technique to minimize CPU usage for drawing.  On my system (dual core 3Ghz), drawing three of these graphs updating every 0.5 seconds takes about 1% of the CPU usage.


Diffs
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  trunk/KDE/kdeui/plotting/KSignalPlotter.h PRE-CREATION 
  trunk/KDE/kdeui/plotting/KSignalPlotter.cpp PRE-CREATION 
  trunk/KDE/kdeui/plotting/KSignalPlotter_p.h PRE-CREATION 

Diff: http://reviewboard.kde.org/r/1430/diff


Testing
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It has been used in KSysGuard for ages.

It has no unit tests however :-/


Screenshots
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Screenshot in action
  http://reviewboard.kde.org/r/1430/s/191/


Thanks,

John