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https://github.com/airstruck/luigi.git
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63 lines
1.7 KiB
Lua
63 lines
1.7 KiB
Lua
local function setDimension (widget, name, size)
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if not widget.parent then
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widget[name] = size
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return
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end
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local parentDimension = widget.parent:calculateDimension(name)
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local claimed = 0
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for i, sibling in ipairs(widget.parent) do
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if sibling ~= widget and sibling[name] then
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claimed = claimed + sibling[name]
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end
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end
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if claimed + size > parentDimension then
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size = parentDimension - claimed
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end
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local min = (name == 'width') and (widget.minwidth or 0)
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or (widget.minheight or 0)
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widget[name] = math.max(size, min)
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return widget[name]
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end
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return function (self)
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self:onEnter(function (event)
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local axis = self.parent.flow
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if axis == 'x' then
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self.cursor = 'sizewe'
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else
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self.cursor = 'sizens'
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end
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end)
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self:onPressDrag(function (event)
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local axis = self.parent.flow
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if axis == 'x' then
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dimension = 'width'
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else
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axis = 'y'
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dimension = 'height'
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end
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local prevSibling = self:getPreviousSibling()
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local nextSibling = self:getNextSibling()
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local prevSize = prevSibling and prevSibling[dimension]
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local nextSize = nextSibling and nextSibling[dimension]
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if prevSize then
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setDimension(prevSibling, dimension,
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event[axis] - prevSibling:calculatePosition(axis))
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end
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if nextSize then
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setDimension(nextSibling, dimension,
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nextSibling:calculatePosition(axis) +
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nextSibling:calculateDimension(dimension) - event[axis])
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end
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end)
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end
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