#!/usr/bin/env python3 """Export compiled 1-bit UI icon headers as BMP assets for SD themes.""" import argparse import re import struct from pathlib import Path ICON_HEADERS = [ "book.h", "book24.h", "bookmark.h", "cover.h", "file24.h", "folder.h", "folder24.h", "hotspot.h", "image24.h", "library.h", "recent.h", "settings2.h", "text24.h", "transfer.h", "wifi.h", ] def parse_icon_header(path: Path): text = path.read_text() size_match = re.search(r"//\s*size:\s*(\d+)x(\d+)", text) if not size_match: raise ValueError(f"missing size comment in {path}") width = int(size_match.group(1)) height = int(size_match.group(2)) bitmap_match = re.search(r"static\s+const\s+uint8_t\s+\w+\s*\[\]\s*=\s*\{(?P.*?)\};", text, re.DOTALL) if not bitmap_match: raise ValueError(f"missing bitmap data in {path}") bitmap_body = bitmap_match.group("body") values = [int(m.group(1), 16) for m in re.finditer(r"0x([0-9A-Fa-f]{2})", bitmap_body)] expected = ((width + 7) // 8) * height if len(values) != expected: raise ValueError(f"{path}: expected {expected} bytes, found {len(values)}") return width, height, bytes(values) def get_bit(bitmap: bytes, width: int, x: int, y: int) -> int: stride = (width + 7) // 8 return (bitmap[y * stride + x // 8] >> (7 - (x % 8))) & 1 def set_bit(buf: bytearray, width: int, x: int, y: int, value: int): stride = (width + 7) // 8 if value: buf[y * stride + x // 8] |= 1 << (7 - (x % 8)) def rotate_1bit_cw(width: int, height: int, bitmap: bytes): rotated_width = height rotated_height = width rotated = bytearray(((rotated_width + 7) // 8) * rotated_height) for y in range(height): for x in range(width): set_bit(rotated, rotated_width, height - 1 - y, x, get_bit(bitmap, width, x, y)) return rotated_width, rotated_height, bytes(rotated) def write_1bit_bmp(path: Path, width: int, height: int, bitmap: bytes): src_stride = (width + 7) // 8 dst_stride = ((width + 31) // 32) * 4 pixel_bytes = dst_stride * height pixel_offset = 14 + 40 + 8 file_size = pixel_offset + pixel_bytes path.parent.mkdir(parents=True, exist_ok=True) with path.open("wb") as out: # BITMAPFILEHEADER out.write(b"BM") out.write(struct.pack("