Add purple tor version of the loading APNG.

toolkit/themes/shared/desktop-jar.inc.mn

@@ -110,6 +110,10 @@
   skin/classic/global/icons/settings.svg                   (../../shared/icons/settings.svg)
   skin/classic/global/icons/shortcut.svg                   (../../shared/icons/shortcut.svg)
   skin/classic/global/icons/sort-arrow.svg                 (../../shared/icons/sort-arrow.svg)
+  skin/classic/global/icons/tor-light-loading.png          (../../shared/icons/tor-light-loading.png)
+  skin/classic/global/icons/tor-light-loading@2x.png       (../../shared/icons/tor-light-loading@2x.png)
+  skin/classic/global/icons/tor-dark-loading.png           (../../shared/icons/tor-dark-loading.png)
+  skin/classic/global/icons/tor-dark-loading@2x.png        (../../shared/icons/tor-dark-loading@2x.png)
   skin/classic/global/icons/trackers.svg                   (../../shared/icons/trackers.svg)
   skin/classic/global/icons/trending.svg                   (../../shared/icons/trending.svg)
   skin/classic/global/icons/update-icon.svg                (../../shared/icons/update-icon.svg)

tools/torbrowser/generate_tor_loading_png.py

+"""
+Script to convert the loading.png and loading@2x.png blue spinners to purple
+spinners for Tor Browser, for both the light and dark themes.
+"""
+
+import argparse
+import colorsys
+import os
+
+from PIL import ExifTags, Image, ImageFilter
+
+parser = argparse.ArgumentParser(description="Convert the loading APNG to be purple.")
+parser.add_argument("loading_png", help="The loading png to convert")
+parser.add_argument(
+    "--light", required=True, help="The name of the light-theme purple output image"
+)
+parser.add_argument(
+    "--dark", required=True, help="The name of the dark-theme purple output image"
+)
+
+parsed_args = parser.parse_args()
+
+orig_im = Image.open(parsed_args.loading_png)
+
+
+def filter_to_light_theme(r, g, b):
+    h, s, v = colorsys.rgb_to_hsv(r, g, b)
+    # Convert from HSV 0.58, 1.0, 255 (start of the circle)
+    # to --purple-60 #8000d7 HSV 0.766, 1.0, 215
+    h = 0.766
+    v = v * 215 / 255
+    return colorsys.hsv_to_rgb(h, s, v)
+
+
+def filter_to_dark_theme(r, g, b):
+    h, s, v = colorsys.rgb_to_hsv(r, g, b)
+    # Convert from HSV 0.58, 1.0, 255 (start of the circle)
+    # to --purple-30 #c069ff HSV 0.766, 0.59, 255
+    h = 0.766
+    s = s * 0.59 / 1.0
+    return colorsys.hsv_to_rgb(h, s, v)
+
+
+filt_light = ImageFilter.Color3DLUT.generate(65, filter_to_light_theme)
+filt_dark = ImageFilter.Color3DLUT.generate(65, filter_to_dark_theme)
+
+transformed_light = []
+transformed_dark = []
+duration = orig_im.info["duration"]
+
+# Transform each APNG frame individually.
+for frame in range(orig_im.n_frames):
+    orig_im.seek(frame)
+    transformed_light.append(orig_im.filter(filt_light))
+    transformed_dark.append(orig_im.filter(filt_dark))
+
+exif = Image.Exif()
+exif[ExifTags.Base.ImageDescription] = f"Generated by {os.path.basename(__file__)}"
+
+transformed_light[0].save(
+    parsed_args.light,
+    save_all=True,
+    append_images=transformed_light[1:],
+    duration=duration,
+    exif=exif,
+)
+
+transformed_dark[0].save(
+    parsed_args.dark,
+    save_all=True,
+    append_images=transformed_dark[1:],
+    duration=duration,
+    exif=exif,
+)