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font-patcher: Issue warning on width irregularities

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[why]
For some reason we determine the bounding box xmax value of the 'normal'
extended glyphs. For the cell size we use the advance width of those
glyphs - the xmax values is not utilized at all.

But if we would ever use it, it might be good to see that something
unexpected(?) happened.

This commit is not really necessary. Maybe it is good, maybe it just
adds noise. We can always remove it later.

No functional change.

Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>
This commit is contained in:
Fini Jastrow 2023-02-15 16:50:29 +01:00
parent bb8a59df50
commit 1d7c4f7791
1 changed files with 7 additions and 0 deletions
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font-patcher
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@ -1108,7 +1108,14 @@ class font_patcher:
# print("New MAXWIDTH-A {:X} {} -> {} {}".format(glyph, self.sourceFont[glyph].width, self.font_dim['width'], xmax))
if xmax > self.font_dim['xmax']:
self.font_dim['xmax'] = xmax
if not warned and glyph > 0x7a: # NOT 'basic' glyph, which includes a-zA-Z
print("Warning: Extended glyphs wider than basic glyphs\n {}".format(
report_advance_widths(self.sourceFont)))
warned = True
# print("New MAXWIDTH-B {:X} {} -> {} {}".format(glyph, self.sourceFont[glyph].width, self.font_dim['width'], xmax))
if not self.args.quiet and self.font_dim['width'] < self.font_dim['xmax']:
print("Warning: Font has negative right side bearing in extended glyphs")
self.font_dim['xmax'] = self.font_dim['width'] # In fact 'xmax' is never used
# print("FINAL", self.font_dim)