Tizian 「ティツィアーン」
e291d3af7a
The launcher showed Flutter's logo: the project template's icons were never replaced. tool/app_icons.py now makes every icon from the kingfisher (assets/icon/halkyon_icon.png), through flutter_launcher_icons v0.14.4 configured in the app's pubspec: Android's adaptive icon (the kingfisher inset 16 % on white, for each launcher to cut to its shape) and the square one before Android 8; iOS's, without transparency; macOS's, the rounded tile on Apple's grid (824 of 1024 pixels); and Windows', the rounded tile, its .ico with every size from 16 to 256 pixels (the tool writes only 256). It keeps the iOS project file as it was, which the tool would break (flutter_launcher_icons issue 634), and writes the snap's icon as tool/snap_icon.py did, which it replaces. The Linux runner gives its window the bundled icon too, for desktops that don't take it from the desktop file. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>
84 lines
3.4 KiB
Python
Executable file
84 lines
3.4 KiB
Python
Executable file
#!/usr/bin/env python3
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"""Makes the app's icons for every platform from its own, the kingfisher on white
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(halkyon_learn_flutter/assets/icon/halkyon_icon.png).
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- The snap's, snap/gui/halkyon-learn.png (512 x 512 pixels, the Snap Store's size),
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which the Store and the desktop file show as they are: the picture with rounded
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corners, as other apps' white tiles have (radius 142.222 of 512, about 28 %).
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- Through flutter_launcher_icons, configured in the app's pubspec: Android's adaptive
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icon and its older square one, iOS's, macOS's (the rounded tile on Apple's grid,
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824 of 1024 pixels) and Windows' (the rounded tile).
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- Windows' .ico once more, with every size Windows shows (16 to 256 pixels): the tool
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writes only the 256 one and leaves Windows to scale it down for its small views.
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- The iOS project file as it was: the tool sets every build setting with ASSETCATALOG
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in its name to the icon set's name, Xcode's yes-or-no
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ASSETCATALOG_COMPILER_GENERATE_SWIFT_ASSET_SYMBOL_EXTENSIONS too, which breaks the
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project (flutter_launcher_icons issue 634); the project names its icon set already.
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The derived images it hands to the tool go to halkyon_learn_flutter/build/icons/,
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which git ignores. The rounded corners' mask is drawn at four times the size and
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scaled down, so their edges are smooth.
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Run from the repository root with Python 3 and Pillow (python3-pil on Ubuntu), the
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app's dependencies fetched:
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python3 tool/app_icons.py
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"""
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import subprocess
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from pathlib import Path
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from PIL import Image, ImageDraw
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APP = Path("halkyon_learn_flutter")
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SOURCE = APP / "assets/icon/halkyon_icon.png"
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DERIVED = APP / "build/icons"
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SNAP_ICON = Path("snap/gui/halkyon-learn.png")
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WINDOWS_ICON = APP / "windows/runner/resources/app_icon.ico"
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IOS_PROJECT = APP / "ios/Runner.xcodeproj/project.pbxproj"
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RADIUS = 142.222 / 512
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SUPERSAMPLING = 4
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# Apple's grid: the tile is 824 of the icon's 1024 pixels, centred.
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MACOS_CANVAS = 1024
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MACOS_TILE = 824
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WINDOWS_SIZES = [16, 20, 24, 32, 40, 48, 64, 128, 256]
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def rounded(size: int) -> Image.Image:
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"""The icon at [size] pixels, its corners rounded off to transparency."""
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icon = Image.open(SOURCE).convert("RGBA").resize((size, size), Image.LANCZOS)
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large = size * SUPERSAMPLING
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mask = Image.new("L", (large, large), 0)
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ImageDraw.Draw(mask).rounded_rectangle(
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(0, 0, large - 1, large - 1), radius=RADIUS * large, fill=255
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)
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mask = mask.resize((size, size), Image.LANCZOS)
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# Keeps what the icon itself makes transparent, and takes the corners away.
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transparent = Image.new("L", (size, size), 0)
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icon.putalpha(Image.composite(icon.getchannel("A"), transparent, mask))
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return icon
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def main() -> None:
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rounded(512).save(SNAP_ICON, optimize=True)
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print(f"Wrote {SNAP_ICON}.")
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DERIVED.mkdir(parents=True, exist_ok=True)
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rounded(1024).save(DERIVED / "rounded.png")
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macos = Image.new("RGBA", (MACOS_CANVAS, MACOS_CANVAS), (0, 0, 0, 0))
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margin = (MACOS_CANVAS - MACOS_TILE) // 2
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macos.alpha_composite(rounded(MACOS_TILE), (margin, margin))
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macos.save(DERIVED / "macos.png")
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ios_project = IOS_PROJECT.read_bytes()
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subprocess.run(["dart", "run", "flutter_launcher_icons"], cwd=APP, check=True)
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IOS_PROJECT.write_bytes(ios_project)
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rounded(256).save(
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WINDOWS_ICON, format="ICO", sizes=[(size, size) for size in WINDOWS_SIZES]
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)
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print(f"Wrote {WINDOWS_ICON} with {len(WINDOWS_SIZES)} sizes.")
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if __name__ == "__main__":
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main()
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