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

[Sebastian Kügler]

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I don't like this change, as it introduces a magic constant for a value that we completely control our own. (Well, to the degree that we say "a gridUnit is roughly the height of a line of text". The 1.6 constant looks weird here, and I'm against adding font specific hacks in, especially since at that point in the code, we don't even know what the font is.

This is not a structural solution, so -1.

- Sebastian Kügler


On Oct. 29, 2015, 6:16 p.m., David Rosca wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/125773/
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> 
> (Updated Oct. 29, 2015, 6:16 p.m.)
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> 
> Review request for Plasma.
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> Bugs: 343349
>     http://bugs.kde.org/show_bug.cgi?id=343349
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> Repository: plasma-framework
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> Description
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> For some fonts, QFontMetrics::boundingRect(QString) returns 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.
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> This affects eg. Noto Sans font that is now default for Plasma 5.5.
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> 
> Diffs
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>   src/declarativeimports/core/units.h fa2256e 
>   src/declarativeimports/core/units.cpp 4e2adae 
>   src/plasma/theme.cpp c49ad4c 
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> Diff: https://git.reviewboard.kde.org/r/125773/diff/
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> 
> 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 ...
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> This fixes the issue. This may also fix BUG 343349
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> 
> File Attachments
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> systray + popup before
>   https://git.reviewboard.kde.org/media/uploaded/files/2015/10/29/d409b391-e35e-451f-bb5b-aa42e7eb2bf3__before.png
> after
>   https://git.reviewboard.kde.org/media/uploaded/files/2015/10/29/445009bc-a4a8-4998-8e82-996a0a4e33fb__after.png
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> 
> Thanks,
> 
> David Rosca
> 
>

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