self.scale (min(width_ratio, height_ratio)) is the right conservative
default for anything whose aspect ratio matters, but a caller whose
surrounding composition already scales along a single axis — e.g.
football-scoreboard's logo_slot = min(height, width // 2), which tracks
height alone — needs text sized the same way, or it reads as
under-scaled next to logos that grew on a panel that only got taller
(128x32 -> 128x64: self.scale stays 1.0 since width didn't grow, but
logos still double).
fit_text_proportional(..., scale=None) now accepts an explicit override;
None keeps the existing self.scale default.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
fit_text always picks the largest ladder rung that fits its box. That's
right when an element owns dedicated space, but wrong when several
independently-fitted elements need to stay visually harmonious as the
panel grows: a score's box might have generous room while a neighboring
logo scales by a fixed geometry factor via px() — fit_text lets the score
balloon out of proportion (even overlapping the logo) even though its
individual pick is technically correct.
fit_text_proportional(text, box, base_size_px, ladder) instead targets
base_size_px * self.scale (the same scale factor px() already uses),
picking the nearest ladder rung at or below that target, still capped to
what fits the box, floored at the smallest rung when the target is below
every rung. Refactored the shared largest-that-fits/ellipsize walk into
_walk_ladder() so fit_text and fit_text_proportional don't duplicate it.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
PIL antialiases TTF outlines by default; a 'pixel-style' font only
rasterizes without antialiasing at specific sizes (for PressStart2P:
exact multiples of its 8px design grid). A ladder rung at an unverified
size silently renders blurry on an LED panel — this exact bug shipped in
both text-display's and football-scoreboard's custom TTF ladders
(non-8-multiple PressStart2P sizes, and '5by7.regular'/'4x6-font' at
sizes that were never actually crisp).
measure_font_crispness(font, sample_text) renders the sample and reports
the fraction of ink-bbox pixels that are neither pure black nor pure
white. BDF fonts (real bitmaps) always score 0.0; TTF ladders should be
verified against this before shipping — see the new
TestFontFitting::test_ladder_arcade_is_crisp pattern.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Add src/adaptive_images.py — the image counterpart to fit_text:
- fit_image(img, box, mode=contain|cover|fill_height|stretch,
crop_to_ink, anchor, resample, upscale) promoting the proven plugin
patterns (football's crop-to-ink fill-height logos, masters' cover
crop + NEAREST flags, static-image's letterbox). Upscales by default —
thumbnail()'s downscale-only behavior is why imagery stays tiny on
big panels.
- draw_fitted_image() pastes aligned within a Region with alpha mask.
- One central Pillow>=9.1 RESAMPLE shim replacing ~15 plugin copies.
LayoutContext.fit_image() caches results per (identity, box size,
options) with a 64-entry LRU; id()-keyed entries pin the source image.
BasePlugin.draw_image() is the one-liner adoption path beside draw_fit.
Composites in adaptive_layout.py: Region.offset() (user x/y-offset
passthrough), scoreboard_regions() (the two-logos-plus-score card math
duplicated across six sports plugins, logo_slot = min(H, W//2)), and
media_row() (art-left/text-right).
Fix LogoHelper's size-blind cache key (stale sizes on panel change);
deprecation note on dead image_utils.py.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Add src/adaptive_layout.py — opt-in core helpers so plugins render
legibly on any panel size without hand-tuned per-display layouts:
- Region: integer rect algebra (bands/columns/weighted splits/centering)
that partitions space so text bands can't overlap by construction
- Font ladders: ordered (family, size) steps known to render crisply
(LADDER_GRID: X11 BDFs at native sizes; LADDER_ARCADE: PressStart2P at
8px multiples) — fitting walks the ladder instead of scaling pixel
fonts fractionally
- LayoutContext: breakpoint tiers, geometry scale vs. a declared design
size, and cached fit_text/fit_lines/font_for_rows queries
Generalizes the three patterns proven in the field: f1-scoreboard's
scale factor, masters-tournament's tiers, baseball-scoreboard's font
fallback ladder.
Wiring: BasePlugin gains a lazy .layout property and draw_fit();
FontManager gains get_native_bdf_size() and a cache_generation counter;
manifest schema gains display.design_size and requires.display_size
max_width/max_height; 96x48 joins DEFAULT_TEST_SIZES; the bounds-check
harness records negative-coordinate draws; TextHelper's broken
measurement helpers are fixed.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
