linux/nerd-fonts
0
0
Fork 0
mirror of https://github.com/ryanoasis/nerd-fonts.git synced 2024-09-19 09:51:48 +02:00
Code Issues Projects Releases Wiki Activity

font-patcher: Set Panose on "Nerd Font" variants

Browse source 
[why]
Some fonts have invalid (or unset) Panose flags. When we create a "Nerd
Font Mono" font the Panose proportion is set to 'monospace'. This
make the font selectable in certain applications that need monospaced
fonts.

After #764 the "Nerd Font" variant shall (again) be detected as
monospaced font, but the glyphs have a big right side bearing (hang into
the next 'cell'). So we need to set the Panose bits there also.

[how]
We already have a check if the font is propably monospaced, independent
from Panose. This is used to prevent --mono patching on originally
proportional fonts.

If we find out with that check that the font is (most probably)
monospaced we also set the appropriate bits in Panose; unless Panose has
valid values that contradict that change.

Fixes: #1098

Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>
This commit is contained in:
Fini Jastrow 2023-02-01 18:19:19 +01:00
parent cdd64ae8a1
commit 122bbae54b
1 changed files with 19 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

29
font-patcher
View file

@ -6,7 +6,7 @@
from __future__ import absolute_import, print_function, unicode_literals from __future__ import absolute_import, print_function, unicode_literals
# Change the script version when you edit this script: # Change the script version when you edit this script:
script_version = "3.5.2" script_version = "3.5.3"
version = "2.3.3" version = "2.3.3"
projectName = "Nerd Fonts" projectName = "Nerd Fonts"
@ -222,6 +222,20 @@ def is_monospaced(font):
# We believe our own check more then Panose ;-D # We believe our own check more then Panose ;-D
return (width_mono, None if width_mono else glyph) return (width_mono, None if width_mono else glyph)
def force_panose_monospace(font):
""" Forces the Panose flag to monospace if they are unset or halfway ok already """
# For some Windows applications (e.g. 'cmd'), they seem to honour the Panose table
# https://forum.high-logic.com/postedfiles/Panose.pdf
panose = list(font.os2_panose)
if panose[0] == 0: # 0 (1st value) = family kind; 0 = any (default)
panose[0] = 2 # make kind latin text and display
print(" Setting Panose 'Family Kind' to 'Latin Text and Display'")
font.os2_panose = tuple(panose)
if panose[0] == 2 and panose[3] != 9:
panose[3] = 9 # 3 (4th value) = propotion; 9 = monospaced
print(" Setting Panose 'Proportion' to 'Monospace'")
font.os2_panose = tuple(panose)
def get_advance_width(font, extended, minimum): def get_advance_width(font, extended, minimum):
""" Get the maximum/minimum advance width in the extended(?) range """ """ Get the maximum/minimum advance width in the extended(?) range """
width = 0 width = 0
@ -267,7 +281,7 @@ class font_patcher:
self.setup_version() self.setup_version()
self.get_essential_references() self.get_essential_references()
self.setup_name_backup(font) self.setup_name_backup(font)
if self.args.single: if not self.args.nonmono:
self.assert_monospace() self.assert_monospace()
self.remove_ligatures() self.remove_ligatures()
self.setup_patch_set() self.setup_patch_set()
@ -280,13 +294,6 @@ class font_patcher:
# Force width to be equal on all glyphs to ensure the font is considered monospaced on Windows. # Force width to be equal on all glyphs to ensure the font is considered monospaced on Windows.
# This needs to be done on all characters, as some information seems to be lost from the original font file. # This needs to be done on all characters, as some information seems to be lost from the original font file.
self.set_sourcefont_glyph_widths() self.set_sourcefont_glyph_widths()
# For some Windows applications (e.g. 'cmd') that is not enough. But they seem to honour the Panose table
# https://forum.high-logic.com/postedfiles/Panose.pdf
panose = list(self.sourceFont.os2_panose)
if panose[0] == 0 or panose[0] == 2: # 0 (1st value) = family kind; 0 = any (default); 2 = latin text and display
panose[0] = 2 # Assert kind
panose[3] = 9 # 3 (4th value) = propotion; 9 = monospaced
self.sourceFont.os2_panose = tuple(panose)
# For very wide (almost square or wider) fonts we do not want to generate 2 cell wide Powerline glyphs # For very wide (almost square or wider) fonts we do not want to generate 2 cell wide Powerline glyphs
if self.font_dim['height'] * 1.8 < self.font_dim['width'] * 2: if self.font_dim['height'] * 1.8 < self.font_dim['width'] * 2:
@ -693,12 +700,14 @@ class font_patcher:
print(" {} and {}".format( print(" {} and {}".format(
report_advance_widths(self.sourceFont), report_advance_widths(self.sourceFont),
panose_check_to_text(panose_mono, self.sourceFont.os2_panose))) panose_check_to_text(panose_mono, self.sourceFont.os2_panose)))
if not width_mono: if self.args.single and not width_mono:
print(" Warning: Sourcefont is not monospaced - forcing to monospace not advisable, results might be useless") print(" Warning: Sourcefont is not monospaced - forcing to monospace not advisable, results might be useless")
if offending_char is not None: if offending_char is not None:
print(" Offending char: 0x{:X}".format(offending_char)) print(" Offending char: 0x{:X}".format(offending_char))
if self.args.single <= 1: if self.args.single <= 1:
sys.exit(projectName + ": Font will not be patched! Give --mono (or -s, or --use-single-width-glyphs) twice to force patching") sys.exit(projectName + ": Font will not be patched! Give --mono (or -s, or --use-single-width-glyphs) twice to force patching")
if width_mono:
force_panose_monospace(self.sourceFont)
def setup_patch_set(self): def setup_patch_set(self):