From deeb8ac54f71d4322a778336db9a7aec411c23ce Mon Sep 17 00:00:00 2001 From: Gabriel Schneider Date: Mon, 28 Sep 2026 16:44:51 -0300 Subject: G1: Lift, soft elevation shadows (off by default) `Lift` (a GUI toggle, capability lift) lifts the focused pane on a critically damped spring (animation.Spring: closed form, about 240 ms to settle, velocity kept across retargets, settled = no frames) and floats notices. The core puts the lift on the regions (Region.lift, on the wire); the GUI casts from it: a soft shadow is decor, an erf rectangle on one quad grown by 3 sigma (decor.frag, flag 0x10000000), in the quad's own space so a track's transform carries it; darken-only, the caster's rect left alone, alpha pre-warped for linear light and IGN-dithered. Cast last in its group, so a neighbour's rails and rules darken with its text; a notice's before its rule. Strength is capped per theme so text over the darkest shadow keeps min(its contrast, 4.5) (test over the native themes). Opt-in until the focus lift/dim default is decided. Feel review material: docs/effects.md. Test-mode PARDES_TEST_SERIES keeps every captured frame. Shared files touched: pardes.zig (two fields, one nextWake line), detached/wire.zig (lift on the region), config.zig, builtins.zig (capability), gui.zig. Not touched: Messages.zig, mouse.zig, tty, host_io. --- src/surface.zig | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'src/surface.zig') diff --git a/src/surface.zig b/src/surface.zig index b6f41853..94b37915 100644 --- a/src/surface.zig +++ b/src/surface.zig @@ -364,6 +364,10 @@ pub const Region = struct { thumb_h: u16 = 0, /// A notice's index in its pane's `notices`. notice: u8 = 0, + /// How far it stands off the page, 0 to 1: a pane's while it has the + /// focus (Lift, on a spring), a notice's while Lift is on. A pixel shell + /// casts a soft shadow from it; the tier it is drawn in never changes. + lift: f32 = 0, /// Cells the column-move rail takes off the right edge while it runs /// there: layers and pixel shells stop short of them, the grid does not. clip: u16 = 0, -- cgit v1.3