Sansan
3c7b4e5c9d
The quiz (song, playlist, players, music player and the popups opened from it) moves into Quiz.tscn and the top panel into TopBar.tscn. The main window keeps only the top bar, the quiz and the popups opened from the top bar, so other views can be added next to the quiz later. Every node keeps its place on screen. Screenshots of every UI state before and after are pixel-identical, and a layout test checks each node against a baseline taken before the split.
56 lines
2.0 KiB
Python
Executable File
56 lines
2.0 KiB
Python
Executable File
#!/usr/bin/env python3
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"""Compares two folders of screenshots from tools/take_screenshots.gd pixel by pixel.
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Usage: tools/compare_screenshots.py <before dir> <after dir> [<diff dir>]
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Prints how many pixels differ in each screenshot. With a diff dir, writes an image
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for each screenshot that differs, with the changed pixels in red over a faded copy of
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the after picture. Exits with 1 if any screenshot differs or is missing.
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"""
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import sys
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from pathlib import Path
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from PIL import Image, ImageChops
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def main() -> int:
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if len(sys.argv) < 3:
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print(__doc__)
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return 2
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before_dir, after_dir = Path(sys.argv[1]), Path(sys.argv[2])
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diff_dir = Path(sys.argv[3]) if len(sys.argv) > 3 else None
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if diff_dir:
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diff_dir.mkdir(parents=True, exist_ok=True)
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names = sorted({p.name for p in before_dir.glob("*.png")}
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| {p.name for p in after_dir.glob("*.png")})
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failed = False
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for name in names:
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before_path, after_path = before_dir / name, after_dir / name
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if not before_path.exists() or not after_path.exists():
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print(f"{name}: missing in {'before' if not before_path.exists() else 'after'}")
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failed = True
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continue
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before = Image.open(before_path).convert("RGB")
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after = Image.open(after_path).convert("RGB")
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if before.size != after.size:
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print(f"{name}: size {before.size} -> {after.size}")
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failed = True
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continue
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mask = ImageChops.difference(before, after).convert("L").point(
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lambda value: 255 if value else 0)
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changed = mask.histogram()[255]
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print(f"{name}: {changed} pixels differ")
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if changed:
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failed = True
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if diff_dir:
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faded = Image.blend(after, Image.new("RGB", after.size, "white"), 0.7)
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faded.paste(Image.new("RGB", after.size, "red"), mask=mask)
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faded.save(diff_dir / name)
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return 1 if failed else 0
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if __name__ == "__main__":
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sys.exit(main())
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