Center the text of the mana counter.

[ghost]

This centers the mana counter text at my 13" laptop (1152x648) by
pushing it a little bit upwards.

where	before this	after this
1152x648
1280x720

I'll check larger resolutions before adding the change.

[ghost]

I was hoping this would be easy, but now I'm not so sure.

Pics using larger resolutions:

ratio	where	before this	after this
16:9	1080x607
16:9	1600x900
16:10	1600x1000
3:2	1500x1000
4:3	1333x1000

• Running 1333x1000 this proposed alignment would result not in a centering, but end up mis aligning the text too much upwards.

• Larger resolutions, if using uncommon (but expectable) ratios, seem slightly affected of the scaling issue Several labels scale bad when fullscreen on 1200x1920 #192 (that issue was presented originally using a rather extreme resolution, but actual use case).

• Even after getting a stable font size (by fixing Several labels scale bad when fullscreen on 1200x1920 #192), consider using a smaller font when mana >=10 is to be displayed, probably using some of cairo#markup_text(...) (https://github.com/anura-engine/anura/blob/6c709c01b368e1797346039c4eeb13f0ea35707a/src/cairo.cpp#L2048), cairo#layout_text(...) (https://github.com/anura-engine/anura/blob/6c709c01b368e1797346039c4eeb13f0ea35707a/src/cairo.cpp#L2125), cairo#font_extents(...) (https://github.com/anura-engine/anura/blob/6c709c01b368e1797346039c4eeb13f0ea35707a/src/cairo.cpp#L2197), or cairo#text_extents(...) (https://github.com/anura-engine/anura/blob/6c709c01b368e1797346039c4eeb13f0ea35707a/src/cairo.cpp#L2218).

I shall have this on hold, fix #192, and then get back to this.

[HarryMichal]

The problem itself is solved here -> the mana counter IS centered with this PR. The problem with mana counter overflowing the art should be addressed with a separate PR.

[ghost]

The problem itself is solved here -> the mana counter IS centered with this PR. [...]

No. The mana counter is not centered with this PR, because we can not really center any text if that text is affected of scaling issues.

Scaling issues affect every resolution. #192 is only an extreme example of how bad this problem can manifest in case the game runs fullscreen on a 16:10 display configured in a vertical setup.

That's a rare use one could say. But is something not so hard or expensive to do nowadays. Using the fantastic DELL™ U2415 the frame is so thin (excepting the bottom part of course and only) you can make a nice 2400x1920 5:4 setup using two.

[...] The problem with mana counter overflowing the art should be addressed with a separate PR.

In case anyone declares that such thing is a problem to be solved.

[HarryMichal]

Ok.