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Extend foreground_color() utility to support custom dark/light colors

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This commit is contained in:
jeremystretch 2021-07-15 13:59:14 -04:00
parent 89662124e5
commit c5178fd90e
2 changed files with 8 additions and 5 deletions
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2
netbox/dcim/svg.py
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@ -342,7 +342,7 @@ class CableTraceSVG:
for i, label in enumerate(labels): for i, label in enumerate(labels):
self.cursor += LINE_HEIGHT self.cursor += LINE_HEIGHT
text_coords = (self.center, self.cursor - LINE_HEIGHT / 2) text_coords = (self.center, self.cursor - LINE_HEIGHT / 2)
text_color = f'#{foreground_color(color)}' text_color = f'#{foreground_color(color, dark="303030")}'
text = Text(label, insert=text_coords, fill=text_color, class_='bold' if not i else []) text = Text(label, insert=text_coords, fill=text_color, class_='bold' if not i else [])
link.add(text) link.add(text)

11
netbox/utilities/utils.py
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@ -44,16 +44,19 @@ def csv_format(data):
return ','.join(csv) return ','.join(csv)
def foreground_color(bg_color): def foreground_color(bg_color, dark='000000', light='ffffff'):
""" """
Return the ideal foreground color (black or white) for a given background color in hexadecimal RGB format. Return the ideal foreground color (dark or light) for a given background color in hexadecimal RGB format.
:param dark: RBG color code for dark text
:param light: RBG color code for light text
""" """
bg_color = bg_color.strip('#') bg_color = bg_color.strip('#')
r, g, b = [int(bg_color[c:c + 2], 16) for c in (0, 2, 4)] r, g, b = [int(bg_color[c:c + 2], 16) for c in (0, 2, 4)]
if r * 0.299 + g * 0.587 + b * 0.114 > 186: if r * 0.299 + g * 0.587 + b * 0.114 > 186:
return '000000' return dark
else: else:
return 'ffffff' return light
def dynamic_import(name): def dynamic_import(name):