forked from enlightenment/efl
elua: done binding eina_rectangle (all inline funcs rewritten)
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Daniel Kolesa
Daniel Kolesa
parent
5aedc8c722
commit
6fe5d100f0
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@ -44,18 +44,202 @@ end
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cutil.init_module(init, shutdown)
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local spans_intersect = function(c1, l1, c2, l2)
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return not (((c2 + l2) <= c1) or (c2 >= (c1 + l1)))
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end
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M.spans_intersect = spans_intersect
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M.Rectangle = ffi.metatype("Eina_Rectangle", {
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__new = function(self, x, y, w, h)
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return ffi.gc(eina.eina_rectangle_new(x, y, w, h), self.free)
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end,
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__index = {
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free = function(self) eina.eina_rectangle_free(ffi.gc(self, nil)) end,
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set = function(self, x, y, w, h)
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self.x, self.y, self.w, self.h = x, y, w, h
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end,
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get_pool = function(self)
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local v = eina.eina_rectangle_pool_get(self)
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return v ~= nil and v or nil
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end,
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is_empty = function(self)
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return (self.w < 1) or (self.h < 1)
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end,
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coords_from = function(self, x, y, w, h)
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self.x, self.y, self.w, self.h = x, y, w, h
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end,
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intersects = function(self, other)
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return spans_intersect(self.x, self.w, other.x, other.w)
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and spans_interscet(self.y, self.h, other.y, other.h)
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end,
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xcoord_inside = function(self, x)
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return ((x >= self.x) and (x < (self.x + self.w)))
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end,
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ycoord_inside = function(self, y)
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return ((y >= self.y) and (y < (self.y + self.h)))
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end,
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coords_inside = function(self, x, y)
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return self:xcoord_inside(x) and self:ycoord_inside(y)
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end,
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union = function(dst, src)
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if dst.x > src.x then
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dst.w = dst.w + dst.x - src.x
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dst.x = src.x
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end
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if (dst.x + dst.w) < (src.x + src.w) then
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dst.w = src.x + src.w - dst.x
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end
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if dst.y > src.y then
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dst.h = dst.h + dst.y - src.y
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dst.y = src.y
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end
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if (dst.y + dst.h) < (src.y + src.h) then
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dst.h = src.y + src.h - dst.y
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end
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end,
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intersection = function(dst, src)
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if not dst:intersects(src) then
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return false
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end
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if dst.x < src.x then
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dst.w = dst.w + dst.x - src.x
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dst.x = src.x
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if dst.w < 0 then dst.w = 0 end
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end
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if (dst.x + dst.w) > (src.x + src.w) then
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dst.w = src.x + src.w - dst.x
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end
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if dst.y < src.y then
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dst.h = dst.h + dst.y - src.y
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dst.y = src.y
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if dst.h < 0 then dst.h = 0 end
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end
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if (dst.y + dst.h) > (src.y + src.h) then
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dst.h = src.y + src.h - dst.y
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end
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return true
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end,
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rescale_in = function(self, inr, outr)
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self.x = inr.x - outr.x
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self.y = inr.y - outr.y
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self.w = inr.w
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self.h = inr.h
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end,
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rescale_out = function(self, inr, outr)
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self.x = outr.x + inr.x
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self.y = outr.y + inr.y
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self.w = outr.w
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self.h = outr.h
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end,
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is_valid = function(self)
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return self.w > 0 and self.h > 0
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end,
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max_x = function(self) return self.x + self.w end,
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max_y = function(self) return self.y + self.h end,
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x_cut = function(self, slice, leftover, amount)
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if amount > self.w then return false end
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if slice then
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slice:coords_from(self.x, self.y, amount, self.h)
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end
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if leftover then
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leftover:coords_from(self.x + amount, self.y,
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self.w - amount, self.h)
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end
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return true
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end,
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y_cut = function(self, slice, leftover, amount)
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if amount > self.h then return false end
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if slice then
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slice:coords_from(self.x, self.y, self.w, amount)
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end
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if leftover then
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leftover:coords_from(self.x, self.y + amount,
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self.w, self.h - amount)
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end
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return true
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end,
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width_cut = function(self, slice, leftover, amount)
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if (self.w - amount) < 0 then return false end
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if slice then
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slice:coords_from(self.x + (self.w - amount), self.y,
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amount, self.h)
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end
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if leftover then
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leftover:coords_from(self.x, self.y, self.w - amount, self.h)
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end
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return true
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end,
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height_cut = function(self, slice, leftover, amount)
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if (self.h - amount) < 0 then return false end
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if slice then
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slice:coords_from(self.x, self.y + (self.h - amount),
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self.w, amount)
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end
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if leftover then
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leftover:coords_from(self.x, self.y, self.w, self.h - amount)
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end
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return true
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end,
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subtract = function(self, other)
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if not self:is_valid() then return false end
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local o1, o2, o3, o4 = ffi.new("Eina_Rectangle"),
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ffi.new("Eina_Rectangle"),
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ffi.new("Eina_Rectangle"),
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ffi.new("Eina_Rectangle")
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local intersection = ffi.new("Eina_Rectangle", self)
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if not intersection:intersection(other) then
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o1:coords_from(self)
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return true, o1, o2, o3, o4
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end
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local leftover = ffi.new("Eina_Rectangle")
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local cut = self.h - (intersection.y - self.y)
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if cut > self.h then cut = self.h end
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self:height_cut(self, leftover, o1, cut)
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local tmp = ffi.new("Eina_Rectangle", leftover)
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if tmp:intersection(intersection) then
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cut = leftover.h - (leftover:max_y() - tmp:max_y())
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if cut > leftover.h then cut = leftover.h end
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leftover:y_cut(leftover, o2, cut)
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end
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local tmp = ffi.new("Eina_Rectangle", leftover)
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if tmp:intersection(intersection) then
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cut = leftover.w - (tmp.x - leftover.x)
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if cut > leftover.w then cut = leftover.w end
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leftover:width_cut(leftover, o3, cut)
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end
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local tmp = ffi.new("Eina_Rectangle", leftover)
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if tmp:intersection(intersection) then
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cut = leftover.w - (leftover:max_x() - tmp:max_x())
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if cut > leftover.w then cut = leftover.w end
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leftover:x_cut(leftover, o4, cut)
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end
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return true, o1, o2, o3, o4
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end
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}
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})
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