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/draw.zig | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'src/draw.zig') diff --git a/src/draw.zig b/src/draw.zig index 2d757635..0998db24 100644 --- a/src/draw.zig +++ b/src/draw.zig @@ -119,6 +119,22 @@ pub fn place(p: *Pardes, s: *Surface) void { s.addRegion(.{ .kind = .workspace_tag, .rect = .{ .x = 0, .y = 0, .w = s.cols, .h = p.topBarHeight() } }); // A column carried to the window's right edge shows where it lands as a // rail in the last cell: the layers under it stop a cell short. + // Lift: the focused pane rises, the others settle back, each on its + // spring; a notice floats while Lift is on. + for (&p.panes, &p.lifts, &p.lift_serials, 0..) |slot, *spring, *serial, id| { + const pane = slot orelse continue; + if (serial.* != pane.serial) { + serial.* = pane.serial; + spring.* = .{}; + } + spring.retarget(if (p.settings.lift and id == p.active) 1 else 0, p.stepped_ns); + _ = spring.step(p.stepped_ns); + } + for (s.regions[0..s.nregions]) |*region| switch (region.kind) { + .grip, .tag, .body, .rail => region.lift = p.lifts[region.owner].value(p.stepped_ns), + .notice => region.lift = if (p.settings.lift) 1 else 0, + else => {}, + }; if (p.drag == .column_move) rail: { const d = p.drag.column_move; const source = layout.columnBySerial(p, d.serial) orelse break :rail; -- cgit v1.3