--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/libpurple/protocols/demo/resources/buddy_icons/mkicon.py Tue Mar 08 01:40:12 2022 -0600
@@ -0,0 +1,90 @@
+#!/usr/bin/env python3
+#
+# Purple - Internet Messaging Library
+# Copyright (C) Pidgin Developers <devel@pidgin.im>
+#
+# Purple is the legal property of its developers, whose names are too numerous
+# to list here. Please refer to the COPYRIGHT file distributed with this
+# source distribution.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, see <https://www.gnu.org/licenses/>.
+
+import argparse
+import colorsys
+import hashlib
+from pathlib import Path
+
+from PIL import Image, ImageDraw, ImageFont
+
+parser = argparse.ArgumentParser(
+ description='Generate buddy icons from user names.')
+parser.add_argument('name', nargs='+', help='The name(s) to use.')
+parser.add_argument('-f', '--font',
+ default='/usr/share/fonts/urw-base35/D050000L.otf',
+ help='Path to (TrueType or OpenType) font to use.')
+parser.add_argument('-s', '--size', default=96, type=int,
+ help='Size of buddy icons to produce.')
+parser.add_argument('-o', '--output', default='.',
+ help='Directory in which to place files.')
+args = parser.parse_args()
+
+
+def calculate_colours_for_text(text):
+ """
+ Calculate the foreground and background colours from text.
+
+ This is based on pidgin_color_calculate_for_text in Pidgin C code.
+ """
+ # Hash the string and get the first 2 bytes of the digest.
+ checksum = hashlib.sha1()
+ checksum.update(text.encode('utf-8'))
+ digest = checksum.digest()
+
+ # Calculate the hue based on the digest, scaled to 0-1.
+ hue = (digest[0] << 8 | digest[1]) / 65535
+ # Get the RGB values for the hue at full saturation and value.
+ foreground = colorsys.hsv_to_rgb(hue, 1.0, 1.0)
+
+ # Calculate the hue based on the end of the digest, scaled to 0-1.
+ hue = (digest[-1] << 8 | digest[-2]) / 65535
+ # Get the RGB values for the hue at full saturation and low value.
+ background = colorsys.hsv_to_rgb(hue, 1.0, 0.2)
+
+ # Finally calculate the foreground summing 20% of the inverted background
+ # with 80% of the foreground.
+ foreground = (
+ (0.2 * (1 - bc)) + (0.8 * fc) for bc, fc in zip(background, foreground)
+ )
+
+ # Pillow requires colours in 0-255.
+ return (tuple(int(c * 255) for c in foreground),
+ tuple(int(c * 255) for c in background))
+
+
+output_dir = Path(args.output)
+font = ImageFont.truetype(args.font, size=int(args.size * 96/72))
+
+for name in args.name:
+ fore, back = calculate_colours_for_text(name)
+
+ # Generate an image using the first letter of the name to choose a glyph
+ # from the specified font. The default font generates some star-like or
+ # flower-like symbols.
+ img = Image.new('RGBA', (args.size, args.size), color=back)
+ draw = ImageDraw.Draw(img)
+ letter = name[0].upper()
+ draw.text((args.size // 2, args.size - 1), letter,
+ font=font, anchor='mb', fill=fore)
+
+ img.save(output_dir / f'{name}.png', 'PNG')