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font-patcher: Store if symbol font is monospaced in ScaleGlyph

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[why]
We might want to handle monospaced symbol fonts differently then
proportional symbol fonts. Proportional symbol fonts usually have
no uniform symbol scaling, while monospaced symbol fonts usually have a
well designed placement of the symbols within the cell.

[how]
Add new member to the dimensions dict.

Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>
This commit is contained in:
Fini Jastrow 2022-10-13 12:18:24 +02:00
parent e4780ad65d
commit 847aeba420
1 changed files with 10 additions and 1 deletions
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11
font-patcher
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@ -1248,7 +1248,7 @@ def get_multiglyph_boundingBox(glyphs, destGlyph = None):
# If destGlyph is given the glyph(s) are first copied over into that # If destGlyph is given the glyph(s) are first copied over into that
# glyph and measured in that font (to avoid rounding errors) # glyph and measured in that font (to avoid rounding errors)
# Leaves the destGlyph in unknown state! # Leaves the destGlyph in unknown state!
bbox = [ None, None, None, None ] bbox = [ None, None, None, None, None ]
for glyph in glyphs: for glyph in glyphs:
if glyph is None: if glyph is None:
# Glyph has been in defining range but is not in the actual font # Glyph has been in defining range but is not in the actual font
@ -1260,6 +1260,7 @@ def get_multiglyph_boundingBox(glyphs, destGlyph = None):
destGlyph.font.paste() destGlyph.font.paste()
glyph = destGlyph glyph = destGlyph
gbb = glyph.boundingBox() gbb = glyph.boundingBox()
gadvance = glyph.width
if len(glyphs) > 1 and gbb[0] == gbb[2] and gbb[1] == gbb[3]: if len(glyphs) > 1 and gbb[0] == gbb[2] and gbb[1] == gbb[3]:
# Ignore empty glyphs if we examine more than one glyph # Ignore empty glyphs if we examine more than one glyph
continue continue
@ -1267,6 +1268,13 @@ def get_multiglyph_boundingBox(glyphs, destGlyph = None):
bbox[1] = gbb[1] if bbox[1] is None or bbox[1] > gbb[1] else bbox[1] bbox[1] = gbb[1] if bbox[1] is None or bbox[1] > gbb[1] else bbox[1]
bbox[2] = gbb[2] if bbox[2] is None or bbox[2] < gbb[2] else bbox[2] bbox[2] = gbb[2] if bbox[2] is None or bbox[2] < gbb[2] else bbox[2]
bbox[3] = gbb[3] if bbox[3] is None or bbox[3] < gbb[3] else bbox[3] bbox[3] = gbb[3] if bbox[3] is None or bbox[3] < gbb[3] else bbox[3]
if not bbox[4]:
bbox[4] = gadvance
else:
if bbox[4] != gadvance:
bbox[4] = -1 # Marker for not-monospaced
if bbox[4] and bbox[4] < 0:
bbox[4] = None
return { return {
'xmin' : bbox[0], 'xmin' : bbox[0],
'ymin' : bbox[1], 'ymin' : bbox[1],
@ -1274,6 +1282,7 @@ def get_multiglyph_boundingBox(glyphs, destGlyph = None):
'ymax' : bbox[3], 'ymax' : bbox[3],
'width' : bbox[2] + (-bbox[0]), 'width' : bbox[2] + (-bbox[0]),
'height': bbox[3] + (-bbox[1]), 'height': bbox[3] + (-bbox[1]),
'advance': bbox[4], # advance width if monospaced
} }
def get_glyph_dimensions(glyph): def get_glyph_dimensions(glyph):