56 lines
1.8 KiB
Lua
56 lines
1.8 KiB
Lua
-- This file is part of SUIT, copyright (c) 2016 Matthias Richter
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local BASE = (...):match('(.-)[^%.]+$')
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return function(core, info, ...)
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local opt, x,y,w,h = core.getOptionsAndSize(...)
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opt.id = opt.id or info
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info.min = info.min or math.min(info.value, 0)
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info.max = info.max or math.max(info.value, 1)
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info.step = info.step or (info.max - info.min) / 10
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local fraction = (info.value - info.min) / (info.max - info.min)
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local value_changed = false
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opt.state = core:registerHitbox(opt.id, x,y,w,h)
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if core:isActive(opt.id) then
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-- mouse update
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local mx,my = core:getMousePosition()
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if opt.vertical then
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fraction = math.min(1, math.max(0, (y+h - my) / h))
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else
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fraction = math.min(1, math.max(0, (mx - x) / w))
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end
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local v = fraction * (info.max - info.min) + info.min
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v = math.floor((v/info.step) + 0.5) * info.step --Snaps slider to nearest step interval.
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fraction = v / (info.max - info.min) + info.min --Updates slider drawing during mouse drag.
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if v ~= info.value then
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info.value = v
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value_changed = true
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end
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-- keyboard update
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local key_up = opt.vertical and 'up' or 'right'
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local key_down = opt.vertical and 'down' or 'left'
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if core:getPressedKey() == key_up then
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info.value = math.min(info.max, info.value + info.step)
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value_changed = true
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elseif core:getPressedKey() == key_down then
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info.value = math.max(info.min, info.value - info.step)
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value_changed = true
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end
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end
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core:registerDraw(opt.draw or core.theme.Slider, fraction, opt, x,y,w,h)
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return {
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id = opt.id,
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hit = core:mouseReleasedOn(opt.id),
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changed = value_changed,
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hovered = core:isHovered(opt.id),
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entered = core:isHovered(opt.id) and not core:wasHovered(opt.id),
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left = not core:isHovered(opt.id) and core:wasHovered(opt.id)
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}
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end
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