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render: change baseline calculation, to center it within the line

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Before this patch, fonts were anchored to the top of the line. With
this patch, it is instead centered.

Closes #1302
This commit is contained in:
Daniel Eklöf 2023-07-21 08:17:32 +02:00
parent 098f0aafd4
commit b3255465f1
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2 changed files with 9 additions and 1 deletions
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3
CHANGELOG.md
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@ -59,10 +59,13 @@
`footclient` now tries `$XDG_RUNTIME_DIR/foot.sock`, then
`/tmp/foot.sock`, even if `$WAYLAND_DISPLAY` and/or
`$XDG_RUNTIME_DIR` are defined ([#1281][1281]).
* Font baseline calculation: try to center the text within the line,
instead of anchoring it at the top ([#1302][1302]).
[starlight-v4]: https://github.com/CosmicToast/starlight/blob/v4/CHANGELOG.md#v4
[1416]: https://codeberg.org/dnkl/foot/issues/1416
[1281]: https://codeberg.org/dnkl/foot/pulls/1281
[1302]: https://codeberg.org/dnkl/foot/issues/1302
### Deprecated

7
render.c
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@ -305,7 +305,12 @@ color_brighten(const struct terminal *term, uint32_t color)
static inline int
font_baseline(const struct terminal *term)
{
return term->font_y_ofs + term->fonts[0]->ascent;
const struct fcft_font *font = term->fonts[0];
const int line_height = term->cell_height;
const int font_height = font->ascent + font->descent;
const int glyph_top_y = round((line_height - font_height) / 2.);
return term->font_y_ofs + glyph_top_y + font->ascent;
}
static void