Review Request 125773: Fix units.gridSize and theme.mSize for some fonts

[David Rosca]

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Review request for Plasma.


Bugs: 343349
    http://bugs.kde.org/show_bug.cgi?id=343349


Repository: plasma-framework


Description
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For some fonts, QFontMetrics::boundingRect(QString) too high rect which makes the gridSize too big.
It now returns correctly the actual height of M character. For backwards compatibility, the value is multiplied with 1.6.

This affects eg. Noto Sans font that is now default for Plasma 5.5.


Diffs
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  src/declarativeimports/core/units.h fa2256e 
  src/declarativeimports/core/units.cpp 4e2adae 
  src/plasma/theme.cpp c49ad4c 

Diff: https://git.reviewboard.kde.org/r/125773/diff/


Testing
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When switching to Noto Sans font, I noticed that icons in system tray grow to big size so it switched to 1 column in vertical panel. Basically everything in Plasma grow too much (even though the font is visually the same or even smaller than DejaVu Sans that I was using before - same font size 9 was used) - too big spacing in task manager, too big popups (application menu, system tray popups), etc ...

This fixes the issue. This may also fix BUG 343349


Thanks,

David Rosca

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