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local core = require((...):match("(.-)[^%.]+$") .. 'core')
return function(info, x,y,w,h, widgetHit, draw)
assert(type(info) == 'table' and type(info.value) == "table", "Incomplete slider value info")
info.min = info.min or {x = 0, y = 0}
info.max = info.max or {x = math.max(info.value.x or 0, 1), y = math.max(info.value.y or 0, 1)}
info.step = info.step or {x = (info.max.x - info.min.x)/50, y = (info.max.y - info.min.y)/50}
local fraction = {
x = (info.value.x - info.min.x) / (info.max.x - info.min.x),
y = (info.value.y - info.min.y) / (info.max.y - info.min.y),
}
local id = core.generateID()
core.mouse.updateState(id, widgetHit or core.style.widgetHit, x,y,w,h)
core.makeCyclable(id)
core.registerDraw(id,draw or core.style.Slider2D, fraction, x,y,w,h)
-- update value
if core.isActive(id) then
core.setKeyFocus(id)
fraction = {
x = (core.mouse.x - x) / w,
y = (core.mouse.y - y) / h,
}
fraction.x = math.min(1, math.max(0, fraction.x))
fraction.y = math.min(1, math.max(0, fraction.y))
local v = {
x = fraction.x * (info.max.x - info.min.x) + info.min.x,
y = fraction.y * (info.max.y - info.min.y) + info.min.y,
}
if v.x ~= info.value.x or v.y ~= info.value.y then
info.value = v
return true
end
end
local changed = false
if core.hasKeyFocus(id) then
if core.keyboard.key == 'down' then
info.value.y = math.min(info.max.y, info.value.y + info.step.y)
changed = true
elseif core.keyboard.key == 'up' then
info.value.y = math.max(info.min.y, info.value.y - info.step.y)
changed = true
end
if core.keyboard.key == 'right' then
info.value.x = math.min(info.max.x, info.value.x + info.step.x)
changed = true
elseif core.keyboard.key == 'left' then
info.value.x = math.max(info.min.x, info.value.x - info.step.x)
changed = true
end
end
return changed
end
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