ypujante/gen_macos_iconset.py

## gen_macos_iconset.py
#!/usr/bin/env python3

import sys
import tempfile
from pathlib import Path
import subprocess
import os
import platform

scale = 1.0

# Account for scaling factor on macOS (requires PyObjC to work)
# Other solution: Set Google Chrome to run in "Low Resolution" mode
if platform.system() == 'Darwin':
  try:
    from AppKit import NSScreen
    scale = NSScreen.mainScreen().backingScaleFactor()
  except:
    scale = 1.0

# input file should be svg

def renderIcon(tmpDir, size, iSvg, oPng):
    size = int(size / scale)
    html = f"""<!DOCTYPE html>
        <html lang="en">
        <head>
            <meta charset="UTF-8">
            <title>Title</title>
        </head>
        <body style="margin:0;overflow:hidden">
        <img style="padding; margin:0" src="{iSvg}" width="{size}" height="{size}"></img>
        </body>
        </html>
      """

    htmlFile = tmpDir / "icon.html"
    with htmlFile.open("w") as f:
        f.write(html)

    command = ["/Applications/Google Chrome.app/Contents/MacOS/Google Chrome",
               "--headless",
               f"--screenshot={oPng}",
               f"--window-size={size},{size}",
               "--default-background-color=0",
               str(htmlFile)
               ]

    subprocess.run(command)

if len(sys.argv) <= 1:
    print("You must provide an svg file input")
    sys.exit(1)

with tempfile.TemporaryDirectory() as tmpDir:
    tmpDir = Path(tmpDir)
    svgInput = Path(os.path.realpath(sys.argv[1]))
    iconsDir = tmpDir / f"{svgInput.stem}.iconset"
    os.mkdir(iconsDir)

    for size in [512, 256, 128, 32, 16]:
      renderIcon(tmpDir, size * 2, svgInput, iconsDir / f"icon_{size}x{size}@2x.png")
      renderIcon(tmpDir, size, svgInput, iconsDir / f"icon_{size}x{size}.png")

    output = svgInput.parent / f"{svgInput.stem}.icns" if len(sys.argv) <= 2 else Path(os.path.realpath(sys.argv[2]))

    command = ["iconutil",
               "-c", "icns",
               "-o", output,
               str(iconsDir) ]

    subprocess.run(command)
	#!/usr/bin/env python3

	import sys
	import tempfile
	from pathlib import Path
	import subprocess
	import os
	import platform

	scale = 1.0

	# Account for scaling factor on macOS (requires PyObjC to work)
	# Other solution: Set Google Chrome to run in "Low Resolution" mode
	if platform.system() == 'Darwin':
	try:
	from AppKit import NSScreen
	scale = NSScreen.mainScreen().backingScaleFactor()
	except:
	scale = 1.0

	# input file should be svg

	def renderIcon(tmpDir, size, iSvg, oPng):
	size = int(size / scale)
	html = f"""<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<title>Title</title>
	</head>
	<body style="margin:0;overflow:hidden">
	<img style="padding; margin:0" src="{iSvg}" width="{size}" height="{size}"></img>
	</body>
	</html>
	"""

	htmlFile = tmpDir / "icon.html"
	with htmlFile.open("w") as f:
	f.write(html)

	command = ["/Applications/Google Chrome.app/Contents/MacOS/Google Chrome",
	"--headless",
	f"--screenshot={oPng}",
	f"--window-size={size},{size}",
	"--default-background-color=0",
	str(htmlFile)
	]

	subprocess.run(command)

	if len(sys.argv) <= 1:
	print("You must provide an svg file input")
	sys.exit(1)

	with tempfile.TemporaryDirectory() as tmpDir:
	tmpDir = Path(tmpDir)
	svgInput = Path(os.path.realpath(sys.argv[1]))
	iconsDir = tmpDir / f"{svgInput.stem}.iconset"
	os.mkdir(iconsDir)

	for size in [512, 256, 128, 32, 16]:
	renderIcon(tmpDir, size * 2, svgInput, iconsDir / f"icon_{size}x{size}@2x.png")
	renderIcon(tmpDir, size, svgInput, iconsDir / f"icon_{size}x{size}.png")

	output = svgInput.parent / f"{svgInput.stem}.icns" if len(sys.argv) <= 2 else Path(os.path.realpath(sys.argv[2]))

	command = ["iconutil",
	"-c", "icns",
	"-o", output,
	str(iconsDir) ]

	subprocess.run(command)