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Title: Add lv_imgfont codepoint range filter (and fix macOS brew parser) by bitcoin3us · Pull Request #3 · MicroPythonOS/lvgl_micropython · GitHub

Open Graph Title: Add lv_imgfont codepoint range filter (and fix macOS brew parser) by bitcoin3us · Pull Request #3 · MicroPythonOS/lvgl_micropython

X Title: Add lv_imgfont codepoint range filter (and fix macOS brew parser) by bitcoin3us · Pull Request #3 · MicroPythonOS/lvgl_micropython

Description: Summary Two small things; the imgfont one is the headline. macOS.py is a drive-by that was blocking the build entirely. 1. imgfont_set_range.patch — fast filter for composed-font glyph lookup Adds an optional accept/exclude codepoint range to lv_imgfont so LVGL can reject codepoints in C before calling path_cb: void lv_imgfont_set_range(font, cp_min, cp_max, excl_min, excl_max); For MicroPython callers — where path_cb is a Python function — this turns the per-glyph cost from a C→Python round-trip into a pair of int compares. A typical text label using getFont(emoji=True) is overwhelmingly ASCII, so almost every glyph today crosses into Python just to bail out with None. With the filter set, only codepoints actually in the emoji map reach Python. Backward-compatible: lv_imgfont_create initialises the range to "accept everything", so any existing caller behaves identically. Safety guard: setter is a no-op on non-imgfont lv_font_t (fingerprint check on get_glyph_dsc) — safe to call defensively from MicroPython. MicroPython auto-binder picks it up from the header — zero binding glue. Patch applies cleanly to LVGL v9.4.0 (current pinned SHA). Wired into build_mpos.sh over in MicroPythonOS/MicroPythonOS#148 using the same patch -p1 --forward < ../../*.patch pattern as the existing esp32_*.patch files in this repo. 2. builder/macOS.py brew-config parser is_homebrew_arm() built a dict from brew config lines via line.split(':', 1), but output.split('\n') yields a trailing empty string with no : — IndexError, build aborts before anything compiles. Filter to lines containing : before parsing. One-line fix. Reproduced on Python 3.14 + recent Homebrew on macOS 26. Test plan macOS desktop build (build_mpos.sh macOS) — patch applies cleanly, lv.imgfont_set_range exposed in the binding, FontManager wiring works ESP32-S3 firmware build (build_mpos.sh esp32s3) — patch applies cleanly, builds clean (no warnings on the patched files) On-device verification (Waveshare ESP32-S3-Touch-LCD-2): lv.imgfont_set_range is callable, FontManager computes bounds dynamically from the loaded emoji map, scrolling the Lightning Piggy transactions list is noticeably smoother than the pre-patch build Safety: setter called on lv.font_montserrat_14 no-ops without crashing, as designed Companion PR The MPOS-side wiring (FontManager invokes the new setter; build_mpos.sh applies the patch) lives in MicroPythonOS/MicroPythonOS#148 — depends on this one merging first so the submodule pointer resolves.

Open Graph Description: Summary Two small things; the imgfont one is the headline. macOS.py is a drive-by that was blocking the build entirely. 1. imgfont_set_range.patch — fast filter for composed-font glyph lookup Adds ...

X Description: Summary Two small things; the imgfont one is the headline. macOS.py is a drive-by that was blocking the build entirely. 1. imgfont_set_range.patch — fast filter for composed-font glyph lookup Adds ...

Opengraph URL: https://github.com/MicroPythonOS/lvgl_micropython/pull/3

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