Shadowtrance
dbf850c434
- M5 Unit Modules library + M5 Unit Test app - Minor fixes for TodoList, TwoEleven, Snake, Brainfuck and Breakout - Fixed SerialConsole to use the uart controller as it was broken in one of the many updates - Fixed keyboard input in TwoEleven, Breakout, Magic8Ball and Snake - Bluetooth Media Keys app, supports pressing physical keys to trigger the corresponding buttonmatrix button - Epub Reader app
130 lines
5.3 KiB
Python
130 lines
5.3 KiB
Python
"""
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gen_fonts.py - regenerate all LVGL binary font files for EpubReader.
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Prerequisites:
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node / npm must be on PATH
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npm install -g lv_font_conv
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Usage (from any directory):
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python Apps/EpubReader/gen_fonts.py
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Output: .bin files written to Apps/EpubReader/assets/
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Output font filenames are font-family-agnostic: font_<size>pt_<variant>.bin
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The app loader expects exactly these names - swap in any 4-weight typeface by
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editing the FONTS dict and placing the .ttf files in Apps/EpubReader/fonts/.
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Default: Noto Serif (4 weights) https://fonts.google.com/noto/specimen/Noto+Serif
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NotoSerif-Medium.ttf → regular
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NotoSerif-MediumItalic.ttf → italic
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NotoSerif-Bold.ttf → bold
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NotoSerif-BoldItalic.ttf → bold italic
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"""
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import shutil
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import subprocess
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import sys
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from pathlib import Path
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SCRIPT_DIR = Path(__file__).parent
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# ── Latin content fonts (4 weights) ───────────────────────────────────────────
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FONTS = {
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"regular": SCRIPT_DIR / "fonts" / "NotoSerif-Medium.ttf",
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"italic": SCRIPT_DIR / "fonts" / "NotoSerif-MediumItalic.ttf",
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"bold": SCRIPT_DIR / "fonts" / "NotoSerif-Bold.ttf",
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"bold_italic": SCRIPT_DIR / "fonts" / "NotoSerif-BoldItalic.ttf",
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}
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# ── Unicode ranges ─────────────────────────────────────────────────────────────
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# Unicode coverage - adjust if your chosen font supports different blocks:
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LATIN_TEXT_RANGES = [
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"-r", "0x20-0x7E", # Basic Latin
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"-r", "0xA0-0x024F", # Latin-1 Supplement + Latin Extended-A/B
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"-r", "0x0370-0x03FF", # Greek (π, Δ, Σ, Ω etc.)
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"-r", "0x1E9E", # ẞ (capital sharp-s, German)
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"-r", "0x2010-0x2026", # General Punctuation (hyphens, dashes, ellipsis)
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"-r", "0x2070-0x209F", # Superscripts and Subscripts (⁰⁴⁵⁶⁷⁸⁹ ₀₁₂₃₄₅₆₇₈₉)
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"-r", "0x20A0-0x20CF", # Currency Symbols (€ ₹ ₽ ₩ ₪ ₴ etc.)
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"-r", "0x2100-0x214F", # Letterlike Symbols (™ ℃ ℉ etc.)
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"-r", "0x2150-0x218F", # Number Forms (⅓ ⅔ ⅛ ⅜ ⅝ ⅞ etc.)
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]
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# ── Sizes to generate ──────────────────────────────────────────────────────────
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SIZES = [16, 20, 28, 36]
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# ── Rendering options ──────────────────────────────────────────────────────────
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BPP = 2 # 2-bit anti-aliasing; use 4 for smoother rendering (~2× larger)
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FORMAT = "bin" # "lvgl" = C struct output; "bin" = binary blob
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COMPRESS = False # True = enable RLE compression (smaller binary, slightly slower)
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# ── Output directory ───────────────────────────────────────────────────────────
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OUT_DIR = SCRIPT_DIR / "assets"
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OUT_DIR.mkdir(parents=True, exist_ok=True)
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# ── Locate lv_font_conv (handles Windows .cmd npm wrappers) ───────────────────
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def _find_tool() -> str:
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for name in ("lv_font_conv", "lv_font_conv.cmd"):
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found = shutil.which(name)
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if found:
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return found
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print("ERROR: lv_font_conv not found. Install with: npm install -g lv_font_conv", file=sys.stderr)
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sys.exit(1)
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LV_FONT_CONV = _find_tool()
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USE_SHELL = sys.platform == "win32"
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def _run(cmd: list) -> bool:
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if USE_SHELL:
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result = subprocess.run(subprocess.list2cmdline(cmd), capture_output=True, text=True, shell=True)
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else:
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result = subprocess.run(cmd, capture_output=True, text=True)
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if result.returncode != 0:
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print(f" ERROR: {result.stderr.strip()}", file=sys.stderr)
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return False
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return True
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def generate_font(font_path: Path, ranges: list, size: int, symbol: str) -> bool:
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"""Convert a single .ttf to an LVGL binary font file."""
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if not font_path.exists():
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print(f" SKIP {symbol} (font not found: {font_path.name})")
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return False
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out = OUT_DIR / f"{symbol}.bin"
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cmd = [LV_FONT_CONV,
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"--font", str(font_path)] + ranges + [
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"--size", str(size),
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"--bpp", str(BPP),
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"--format", FORMAT,
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"--lv-font-name", symbol,
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"-o", str(out),
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]
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if not COMPRESS:
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cmd.append("--no-compress")
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print(f" {symbol:<36} size={size} ← {font_path.name}")
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return _run(cmd)
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def main():
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print(f"lv_font_conv → {OUT_DIR}\n")
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generated = 0
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skipped = 0
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# ── Content font variants (Latin text + symbols) ───────────────────────────
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for size in SIZES:
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print(f"── {size}pt {'─' * 52}")
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for font_key in FONTS.keys():
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symbol = f"font_{size}pt_{font_key}"
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ok = generate_font(FONTS[font_key], LATIN_TEXT_RANGES, size, symbol)
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if ok: generated += 1
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else: skipped += 1
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print(f"\nDone. {generated} generated, {skipped} skipped.")
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if __name__ == "__main__":
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main()
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