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