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local state = {
ratio = 0.58,
offset = 0,
}
local sides = { "left", "top", "right", "bottom" }
local opposite = {
left = "right",
right = "left",
top = "bottom",
bottom = "top",
}
local function clamp(x, min, max)
return math.max(min, math.min(max, x))
end
hl.layout.register("spiral", {
recalculate = function(ctx)
local n = #ctx.targets
if n == 0 then
return
end
local area = ctx.area
for i, target in ipairs(ctx.targets) do
if i == n then
target:place(area)
else
local side = sides[((i - 1 + state.offset) % #sides) + 1]
target:place(ctx:split(area, side, state.ratio))
area = ctx:split(area, opposite[side], 1.0 - state.ratio)
end
end
end,
layout_msg = function(ctx, msg)
local command, arg = msg:match("^(%S+)%s*(.*)$")
if command == "ratio" then
state.ratio = clamp(tonumber(arg) or state.ratio, 0.1, 0.9)
elseif command == "grow" then
state.ratio = clamp(state.ratio + 0.05, 0.1, 0.9)
elseif command == "shrink" then
state.ratio = clamp(state.ratio - 0.05, 0.1, 0.9)
elseif command == "rotate" then
state.offset = (state.offset + 1) % #sides
else
return "spiral: expected ratio <0.1..0.9>, grow, shrink, or rotate"
end
return true
end,
})
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