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font-patcher: No vertical overlap for inverse powerline glyphs

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[why]
The inverse powerline glyphs have substantial parts of the glyph outline
neighboring the line above and below. The overlap we introduce (1%) is
clearly visible with Windows Terminal.

[how]
Experimentally reduce the vertical overlap for the inverse powerline
glyphs to 0.

Reference: #1490 in the comments below

Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>
This commit is contained in:
Fini Jastrow 2024-08-20 09:55:57 +02:00
parent a2697b0fef
commit c0831e98bf
1 changed files with 8 additions and 6 deletions
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14
font-patcher
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@ -6,7 +6,7 @@
from __future__ import absolute_import, print_function, unicode_literals
# Change the script version when you edit this script:
script_version = "4.14.4"
script_version = "4.15.0"
version = "3.2.1"
projectName = "Nerd Fonts"
@ -853,8 +853,9 @@ class font_patcher:
box_enabled = False # Cowardly not scaling existing glyphs, although the code would allow this
# Stretch 'xz' or 'pa' (preserve aspect ratio)
# Supported params: overlap | careful | xy-ratio | dont_copy | ypadding
# Overlap value is used horizontally but vertically limited to 0.01
# Supported params: overlap | voverlap | careful | xy-ratio | dont_copy | ypadding
# Overlap value is used horizontally and vertically - but vertically limited to 0.01 (or specified by voverlap)
# Voverlap is only used if overlap is also set and sets an explicit vertical overlap value
# Careful does not overwrite/modify existing glyphs
# The xy-ratio limits the x-scale for a given y-scale to make the ratio <= this value (to prevent over-wide glyphs)
# '1' means occupu 1 cell (default for 'xy')
@ -878,8 +879,8 @@ class font_patcher:
0xe0b3: {'align': 'r', 'valign': 'c', 'stretch': '^xy', 'params': {'xy-ratio': 0.7}},
# Inverse arrow tips
0xe0d6: {'align': 'l', 'valign': 'c', 'stretch': '^xy', 'params': {'overlap': 0.05, 'xy-ratio': 0.7}},
0xe0d7: {'align': 'r', 'valign': 'c', 'stretch': '^xy', 'params': {'overlap': 0.05, 'xy-ratio': 0.7}},
0xe0d6: {'align': 'l', 'valign': 'c', 'stretch': '^xy', 'params': {'overlap': 0.05, 'xy-ratio': 0.7, 'voverlap': 0.0}},
0xe0d7: {'align': 'r', 'valign': 'c', 'stretch': '^xy', 'params': {'overlap': 0.05, 'xy-ratio': 0.7, 'voverlap': 0.0}},
# Rounded arcs
0xe0b4: {'align': 'l', 'valign': 'c', 'stretch': '^xy', 'params': {'overlap': 0.06, 'xy-ratio': 0.59}},
@ -1502,8 +1503,9 @@ class font_patcher:
logger.critical("Conflicting params: overlap and ypadding")
sys.exit(1)
if overlap:
voverlap = sym_attr['params'].get('voverlap')
scale_ratio_x *= 1.0 + (self.font_dim['width'] / (sym_dim['width'] * scale_ratio_x)) * overlap
y_overlap = min(0.01, overlap) # never aggressive vertical overlap
y_overlap = voverlap if voverlap is not None else min(0.01, overlap) # never aggressive vertical overlap
scale_ratio_y *= 1.0 + (self.font_dim['height'] / (sym_dim['height'] * scale_ratio_y)) * y_overlap
# Size in x to size in y ratio limit (to prevent over-wide glyphs)