# 把 H5 tabbar 的「选中态」图标从旧品牌橙重着色为甄房交互蓝
# 图标为单色 + alpha 通道，按 alpha 保留、RGB 整体替换即可无损改色
# 用法: python _design-test/recolor-tabbar.py          （预演）
#       python _design-test/recolor-tabbar.py --write  （真写）
import os, sys, collections
from PIL import Image

D = r'e:\KF_7\ZhenOS-ZF\zhenfang-uni\src\static\tabbar'
TARGET = (0x00, 0x70, 0xF2)   # #0070F2 甄房交互蓝
WRITE = '--write' in sys.argv

def dominant(im):
    c = collections.Counter()
    for px in im.getdata():
        if px[3] > 200:
            c[px[:3]] += 1
    return c.most_common(1)[0][0] if c else None

for f in sorted(os.listdir(D)):
    if not f.endswith('.png') or '_blue' not in f:
        continue
    p = os.path.join(D, f)
    im = Image.open(p).convert('RGBA')
    before = dominant(im)
    if before == TARGET:
        print('  %-22s 已是目标色，跳过' % f)
        continue
    px = im.load()
    for y in range(im.height):
        for x in range(im.width):
            r, g, b, a = px[x, y]
            px[x, y] = (TARGET[0], TARGET[1], TARGET[2], a)
    after = dominant(im)
    print('  %-22s #%02X%02X%02X -> #%02X%02X%02X' % (f, *before, *after))
    if WRITE:
        im.save(p)

print('\n' + ('已写入' if WRITE else '预演，未写入（加 --write 生效）'))