Review Request: use KGlobalSettings::smallestReadableFont() in ruler (and remove hardcoding size to 6pt)

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This review has been submitted with commit 39467187ba24763dddf312ef28549dbaa7dc5003 by Friedrich W. H. Kossebau to branch master.

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On Aug. 15, 2012, 2:56 p.m., Friedrich W. H. Kossebau wrote:
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> (Updated Aug. 15, 2012, 2:56 p.m.)
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> 
> Review request for Calligra.
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> Description
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> Somehow the numbers in the rulers to me still looked not balanced to the rest of the UI. Having a closer look at the code I found that the basic reason is that while the ruler metric calculations are based on KGlobalSettings::toolBarFont() the actual rendering does use the normal widget font.
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> Another issue I see is that KGlobalSettings::toolBarFont() is used, not KGlobalSettings::smallestReadableFont(), which IMHO is better suited here. And the API dox writer even agrees with me:
> http://api.kde.org/4.8-api/kdelibs-apidocs/kdeui/html/classKGlobalSettings.html#a1af6d9cc0108fca58b002b4c127dc51f
> "This can be used in dockers, rulers and other places where space is at a premium."
> :)
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> Attached patch fixes that, both by switching to smallestReadableFont() and setting the font before rendering the measurement numbers.
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> Okay to backport to 2.5?
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> Diffs
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>   libs/main/KoRuler.cpp 98b096a 
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> Diff: http://git.reviewboard.kde.org/r/106040/diff/
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> Testing
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> Thanks,
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> Friedrich W. H. Kossebau
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