Port icon generation script to Python

Author: agateau

fastlane/metadata/android/en-US/images/icon.png

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+This directory contains the source image for the game icon and a script to generate various versions of this icon.

icon/README.md

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+#!/usr/bin/env python3
+"""
+Generate all required icon variants from icon.ase
+"""
+import argparse
+import shlex
+import shutil
+import subprocess
+import sys
+
+from pathlib import Path
+
+ICON_DIR = Path(__file__).resolve().parent
+REPO_DIR = ICON_DIR.parent
+WORK_DIR = ICON_DIR / "work"
+
+ANDROID_DIR = REPO_DIR / "android"
+ASSETS_DIR = ANDROID_DIR / "assets"
+RES_DIR = ANDROID_DIR / "res"
+
+GPLAY_ICON = REPO_DIR / "fastlane/metadata/android/en-US/images/icon.png"
+
+MACOS_ICON = REPO_DIR / "tools/packaging/macos/pixelwheels.icns"
+
+BGCOLOR = "#5a6988"
+
+DESKTOP_ICON_SIZES = [16, 32, 48]
+
+SCALED_REFERENCE_SIZE = 64
+SCALED_DESKTOP_ICON_SIZES = [128, 256, 512, 1024]
+
+
+def run(*args):
+    cmd = [str(x) for x in args]
+    cmd_str = " \\\n  ".join(shlex.quote(x) for x in cmd)
+    res = subprocess.run(cmd)
+    if res.returncode != 0:
+        print(f"The following command failed with exit code {res.returncode}:")
+        print(cmd_str)
+        sys.exit(1)
+
+
+def aseprite(*args):
+    cmd = ["aseprite", "--batch", ICON_DIR / "icon.ase"] + list(args)
+    run(*cmd)
+
+
+def generate_macos():
+    for size in DESKTOP_ICON_SIZES:
+        aseprite("--slice", f"icon-{size}",
+                 "--save-as", WORK_DIR / f"icon-{size}.png")
+
+    for size in SCALED_DESKTOP_ICON_SIZES:
+        scale = int(size / SCALED_REFERENCE_SIZE)
+        aseprite("--slice", f"icon-{SCALED_REFERENCE_SIZE}",
+                 "--scale", scale,
+                 "--save-as", WORK_DIR / f"icon-{size}.png")
+
+    run("png2icns", MACOS_ICON, *WORK_DIR.glob("*.png"))
+
+
+def generate_android():
+    """TODO: port a fixed version once the adaptive issue is sorted out.
+
+    See https://github.com/agateau/pixelwheels/issues/198
+
+    Original code:
+
+    # mdpi & xhdpi
+    aseprite --batch icon.ase --slice icon-48 \
+        --save-as $RES_DIR/drawable-mdpi/ic_launcher.png \
+        --scale 2 --save-as $RES_DIR/drawable-xhdpi/ic_launcher.png
+
+    # hdpi & xxhdpi
+    aseprite --batch icon.ase --slice icon-72 \
+        --save-as $RES_DIR/drawable-hdpi/ic_launcher.png \
+        --scale 2 --save-as $RES_DIR/drawable-xxhdpi/ic_launcher.png
+    """
+    pass
+
+
+def generate_android_tv():
+    aseprite("--slice", "tv-banner",
+             "--scale", 2,
+             "--save-as", RES_DIR / "drawable-xhdpi/tv_banner.png")
+
+
+def generate_desktop_assets():
+    aseprite("--slice", "icon-72",
+             "--scale", 2,
+             "--save-as", ASSETS_DIR / "desktop-icon/desktop-icon.png")
+
+
+def generate_gplay():
+    # Google Play: 512 x 512 RVB, flat
+
+    # Start from the biggest, unscaled version
+    tmp_image = WORK_DIR / "gplay-tmp.png"
+    aseprite("--slice", "icon-72", "--save-as", tmp_image)
+
+    run("convert", "-scale", "512x512", tmp_image,
+        "-background", BGCOLOR, "-flatten", GPLAY_ICON)
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+        description=__doc__)
+
+    parser.add_argument("-k", "--keep", action="store_true",
+                        help="Keep work dir")
+
+    parser.add_argument("targets", nargs="*")
+
+    args = parser.parse_args()
+
+    if WORK_DIR.exists():
+        shutil.rmtree(WORK_DIR)
+    WORK_DIR.mkdir()
+
+    try:
+        if args.targets:
+            targets = args.targets
+        else:
+            prefix = "generate_"
+            targets = [k[len(prefix):] for k in globals() if k.startswith(prefix)]
+
+        _generate_work_icons()
+
+        for target in targets:
+            print(f"== {target} ==")
+            target_fn = eval(f"generate_{target}")
+            target_fn()
+    finally:
+        if not args.keep:
+            shutil.rmtree(WORK_DIR)
+
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())
+# vi: ts=4 sw=4 et