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fontrenderer.cpp: Use additional percentage height offset.

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Different font types could have different glyph heights,
Therfore static values seems not really senseful.
eg. chars like ÄÁÂÅÈÉÊËÌÍÎÏÑÒÓÕÖÙÛÜÝ could paint over defined height,

Note: 	However, depending of implementations, the font image may change.
	Most likely this must be adapted to some parts.


Origin commit data
------------------
Commit: 3ecb94fc21
Author: Thilo Graf <dbt@novatux.de>
Date: 2017-01-01 (Sun, 01 Jan 2017)
This commit is contained in:
Thilo Graf
2017-01-01 16:46:49 +01:00
parent 932a0c5b8f
commit eb7d16a32a
1 changed files with 7 additions and 3 deletions
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10
src/driver/fontrenderer.cpp
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@@ -287,10 +287,14 @@ return 0;
ascender=tM; ascender=tM;
descender=tg-hg; //this is a negative value! descender=tg-hg; //this is a negative value!
int halflinegap= -(descender>>1); // |descender/2| - we use descender as linegap, half at top, half at bottom int halflinegap= -(descender>>1); // |descender/2| - we use descender as linegap, half at top, half at bottom
upper = halflinegap+ascender+3; // we add 3 at top
lower = -descender+halflinegap+1; // we add 1 at bottom //hack: Use additional percentage height offset, font types could have different heights, static values seems not really senseful.
upper = halflinegap+ascender+hg/7; // we add 1/7 of glyph height at top
lower = -descender+halflinegap-hg/10; // we add 1/10 of glyph height at bottom
height=upper+lower; // this is total height == distance of lines height=upper+lower; // this is total height == distance of lines
DigitHeight = ascender+2;
DigitHeight = ascender+2; //Is this static value really ok?
DigitOffset = -descender+halflinegap; DigitOffset = -descender+halflinegap;
// hack end // hack end