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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:24:48 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:24:48 +0000
commitcca66b9ec4e494c1d919bff0f71a820d8afab1fa (patch)
tree146f39ded1c938019e1ed42d30923c2ac9e86789 /share/extensions/color_grayscale.py
parentInitial commit. (diff)
downloadinkscape-cca66b9ec4e494c1d919bff0f71a820d8afab1fa.tar.xz
inkscape-cca66b9ec4e494c1d919bff0f71a820d8afab1fa.zip
Adding upstream version 1.2.2.upstream/1.2.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'share/extensions/color_grayscale.py')
-rwxr-xr-xshare/extensions/color_grayscale.py18
1 files changed, 18 insertions, 0 deletions
diff --git a/share/extensions/color_grayscale.py b/share/extensions/color_grayscale.py
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+++ b/share/extensions/color_grayscale.py
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+#!/usr/bin/env python
+"""Convert to grey"""
+
+import inkex
+
+
+class Grayscale(inkex.ColorExtension):
+ """Make all colours grayscale"""
+
+ def modify_color(self, name, color):
+ # ITU-R Recommendation BT.709 (NTSC and PAL)
+ # l = 0.2125 * r + 0.7154 * g + 0.0721 * b
+ lum = 0.299 * color.red + 0.587 * color.green + 0.114 * color.blue
+ return inkex.Color((int(round(lum)), int(round(lum)), int(round(lum))))
+
+
+if __name__ == "__main__":
+ Grayscale().run()