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3e19bd1404
Fixes #8079, where font hinting only sharpens the vertical axis (vertical stems stay blurry), and none of the skrifa knobs were reachable — only switching to `Target::Mono` helped, but that wasn't exposed. This makes the hinting target configurable instead of hardcoding `Target::Smooth { symmetric_rendering: true, preserve_linear_metrics: true }`. ### API - New `epaint::text::HintingTarget` mirroring `skrifa::outline::Target`: - `Mono` - `Smooth(SmoothHinting)` where `SmoothHinting { light, symmetric_rendering, preserve_linear_metrics }` - New field `FontTweak::hinting_target: HintingTarget`. - Each variant/field is documented with what it does and the egui-specific caveats (e.g. `symmetric_rendering` only affects interpreter-hinted fonts; egui positions glyphs from shaper advances so `preserve_linear_metrics` mostly affects sharpness, not layout). ### Render - `font.rs` converts `HintingTarget` → `skrifa::outline::Target` and threads it into the per-glyph `reconfigure` call; the hinting instance is also reconfigured when the target changes. ### UI - The font-tweak settings panel gets a `hinting_target` row: Smooth/Mono radios, `light` / `symmetric_rendering` / `preserve_linear_metrics` checkboxes, and a `Reset` button — all with tooltips. ### Behavior - `HintingTarget::default()` matches egui's previous hardcoded target, so **rendering is unchanged** unless you opt in. To fix the horizontal blur from #8079, uncheck `preserve_linear_metrics` (or pick `Mono`). Whether to flip the *default* is left as a follow-up. 🤖 Generated with [Claude Code](https://claude.com/claude-code) --------- Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>