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89 lines
3.8 KiB
Python
89 lines
3.8 KiB
Python
#!/usr/bin/env python3
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"""Check native captures of heart_sim_app.dart on iPhone 17 Pro, iOS 26.5.
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Usage: python verify_heart_screenshots.py before.png after.png
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Requires Pillow. Inputs are original 1206x2622 simctl screenshots, not PR crops.
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"""
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import sys
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from PIL import Image, ImageChops
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def color_pixels(image, box, predicate):
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left, top, right, bottom = box
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return [
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(x, y)
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for y in range(top, bottom)
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for x in range(left, right)
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if predicate(image.getpixel((x, y)))
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]
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def is_red(color):
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red, green, blue = color
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return red > 140 and red > green * 1.5 and red > blue * 1.5
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def is_yellow(color):
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red, green, blue = color
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return red > 180 and green > 130 and blue < 90
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def main():
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before, after = [Image.open(path).convert("RGB") for path in sys.argv[1:]]
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assert before.size == after.size == (1206, 2622), "Use the documented simulator and fixture"
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regions = {
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"selected reaction": (95, 522, 150, 606),
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"unselected reaction": (95, 744, 150, 828),
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"plain message heart": (175, 980, 225, 1035),
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"emoji-presentation message heart": (375, 980, 435, 1035),
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# Native iOS fallback currently renders VS15 as a color heart too.
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"text-presentation message heart": (550, 980, 620, 1035),
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"bold message heart": (170, 1040, 220, 1090),
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"italic message heart": (430, 1040, 490, 1090),
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"emoji-only message": (65, 1490, 200, 1650),
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}
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warnings = {
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"selected warning reaction": (260, 522, 325, 606),
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"unselected warning reaction": (260, 744, 325, 828),
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"plain message warning": (275, 1090, 335, 1150),
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"emoji-presentation message warning": (350, 1090, 415, 1150),
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"text-presentation message warning": (430, 1090, 490, 1150),
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"bold message warning": (230, 1040, 290, 1090),
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"italic message warning": (490, 1040, 550, 1090),
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"emoji-only warning": (205, 1490, 335, 1650),
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}
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for cases, predicate in ((regions, is_red), (warnings, is_yellow)):
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for name, box in cases.items():
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assert not color_pixels(before, box, predicate), f"{name}: original must reproduce monochrome glyph"
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pixels = color_pixels(after, box, predicate)
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assert len(pixels) > 500, f"{name}: expected native color emoji"
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if "emoji-only" in name:
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# Production uses a separate 36sp path. Reject a fixture that
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# accidentally renders normal-sized inline emoji or clips it.
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left, right = min(x for x, _ in pixels), max(x for x, _ in pixels)
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top, bottom = min(y for _, y in pixels), max(y for _, y in pixels)
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assert len(pixels) > 4500, f"{name}: expected enlarged emoji"
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assert 90 <= right - left <= 110 and 90 <= bottom - top <= 110
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assert box[0] < left < right < box[2] - 1
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assert box[1] < top < bottom < box[3] - 1
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if "reaction" in name:
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center = (min(y for _, y in pixels) + max(y for _, y in pixels)) / 2
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pill_center = (box[1] + box[3] - 1) / 2
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assert abs(center - pill_center) <= 1.5, f"{name}: emoji is not centered"
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print(f"PASS: {name}")
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# The three preceding message lines gain one logical pixel each from the
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# fallback font's metrics. Compare unchanged text after that translation.
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for name, box in {
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"preserved symbols and languages": (65, 1260, 1100, 1385),
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}.items():
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shifted = (box[0], box[1] + 9, box[2], box[3] + 9)
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difference = ImageChops.difference(before.crop(box), after.crop(shifted))
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assert difference.getbbox() is None, f"{name}: unexpected rendering change"
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print(f"PASS: {name} is pixel-identical")
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if __name__ == "__main__":
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main()
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