43 lines
1.3 KiB
Lua
43 lines
1.3 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, normal, ...)
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local opt, x,y = core.getOptionsAndSize(...)
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opt.normal = normal or opt.normal or opt[1]
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opt.hovered = opt.hovered or opt[2] or opt.normal
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opt.active = opt.active or opt[3] or opt.hovered
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assert(opt.normal, "Need at least `normal' state image")
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opt.id = opt.id or opt.normal
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opt.state = core:registerMouseHit(opt.id, x,y, function(u,v)
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local id = opt.normal:getData()
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assert(id:typeOf("ImageData"), "Can only use uncompressed images")
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u, v = math.floor(u+.5), math.floor(v+.5)
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if u < 0 or u >= opt.normal:getWidth() or v < 0 or v >= opt.normal:getHeight() then
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return false
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end
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local _,_,_,a = id:getPixel(u,v)
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return a > 0
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end)
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local img = opt.normal
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if core:isActive(opt.id) then
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img = opt.active
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elseif core:isHovered(opt.id) then
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img = opt.hovered
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end
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core:registerDraw(opt.draw or function(img,x,y, r,g,b,a)
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love.graphics.setColor(r,g,b,a)
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love.graphics.draw(img,x,y)
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end, img, x,y, love.graphics.getColor())
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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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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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