MeowOS Dev
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74 lines
2.6 KiB
Python
74 lines
2.6 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""preview_glyphs.py — 从 atlas/font.png + font.idx 抽取若干字符，拼成带标注的接触表 PNG，
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用于人工核对图集中字形正确、无漏字。用法: preview_glyphs.py <atlas_dir> <out.png>"""
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import struct
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import sys
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from PIL import Image, ImageDraw
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def load_idx(path):
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d = open(path, "rb").read()
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assert d[:4] == b"MFNI", d[:4]
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depth = d[6]
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nf = d[7]
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faces = []
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for i in range(nf):
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fh = d[16 + i * 20:16 + i * 20 + 20]
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px, px_, py, pw, ph, asc, dsc, gc = struct.unpack("<HHHHHhhH", fh[:16])
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goff = struct.unpack("<I", fh[16:20])[0]
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tabs = []
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for k in range(gc):
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g = d[goff + k * 16:goff + k * 16 + 16]
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cp, x, y, w, h, adv, dx, dy = struct.unpack("<IHHHHHbB", g)
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tabs.append((cp, x, y, w, h, adv, dx, dy))
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faces.append({"px": px, "px_": px_, "py_": py, "pw": pw, "ph": ph, "asc": asc, "dsc": dsc, "tabs": tabs})
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return depth, faces
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def main():
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atlas = sys.argv[1]
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out = sys.argv[2]
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depth, faces = load_idx(f"{atlas}/font.idx")
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im = Image.open(f"{atlas}/font.png").convert("L")
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pix = im.load()
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# 取样字符
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sample = "MeowOS 主屏关机设置播放器音乐电台返回背光时间应用关闭确认取消01472589 ABC.，。！？：；「」￥·—…％"
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cell = 44
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cols = 12
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rows = (len(sample) + cols - 1) // cols
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sheet = Image.new("RGB", (cols * cell, rows * cell), (28, 30, 34))
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dr = ImageDraw.Draw(sheet)
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for idx, ch in enumerate(sample):
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cp = ord(ch)
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r, c = divmod(idx, cols)
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# 找 28 面，找不到用 20 面
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box = None
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for f in faces:
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if f["px"] == 28:
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for t in f["tabs"]:
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if t[0] == cp and t[3] and t[4]:
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box = (f, t)
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break
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if box is None:
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for f in faces:
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if f["px"] == 20:
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for t in f["tabs"]:
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if t[0] == cp and t[3] and t[4]:
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box = (f, t)
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break
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oy, ox = r * cell + 2, c * cell + 4
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if box:
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f, t = box
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_, x, y, w, h, adv, dx, dy = t
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for yy in range(h):
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for xx in range(w):
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a = pix[f["px_"] + x + xx, f["py_"] + y + yy] # PIL: [x, y]
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if a:
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sheet.putpixel((ox + xx, oy + yy), (255, 255, 255))
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dr.text((ox, oy + 26), ch, fill=(255, 180, 60))
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sheet.save(out)
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print(f"saved {out}")
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if __name__ == "__main__":
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main()
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