Fix client shape handling

The functions awful.client.shape.update.bounding and .clip handle both
the client's shape and the shape set by Lua. However,
awful.client.shape.update.all only handles the shape set by Lua and
ignores the client's own shape. This can easily be noticed with xeyes.
When update.all ran last and you move around xeyes, the wallpaper behind
it is moved along, because it is not actually outside of the window.

Fix this by partly reverting 1a5f6b7ad2 and having update.all just
call the other two functions again.

Signed-off-by: Uli Schlachter <psychon@znc.in>

lib/awful/client/shape.lua

@@ -87,48 +87,8 @@ end
 -- @function awful.client.shape.update.all
 -- @client c The client to act on
 function shape.update.all(c)
-    local shape_fun = c._shape
-
-    if not shape_fun then
-        c.shape_bounding = nil
-        c.shape_clip = nil
-        shape.update.bounding(c)
-        shape.update.clip(c)
-        return
-    end
-
-    local geo = c:geometry()
-    local bw = c.border_width
-
-    -- First handle the bounding shape (things including the border)
-    local img = cairo.ImageSurface(cairo.Format.A1, geo.width + 2*bw, geo.height + 2*bw)
-    local cr = cairo.Context(img)
-
-    -- We just draw the shape in its full size
-    shape_fun(cr, geo.width + 2*bw, geo.height + 2*bw)
-    cr:set_operator(cairo.Operator.SOURCE)
-    cr:fill()
-    c.shape_bounding = img._native
-    img:finish()
-
-    -- Now handle the clip shape (things excluding the border)
-    img = cairo.ImageSurface(cairo.Format.A1, geo.width, geo.height)
-    cr = cairo.Context(img)
-
-    -- We give the shape the same arguments as for the bounding shape and draw
-    -- it in its full size (the translate is to compensate for the smaller
-    -- surface)
-    cr:translate(-bw, -bw)
-    shape_fun(cr, geo.width + 2*bw, geo.height + 2*bw)
-    cr:set_operator(cairo.Operator.SOURCE)
-    cr:fill_preserve()
-    -- Now we remove an area of width 'bw' again around the shape (We use 2*bw
-    -- since half of that is on the outside and only half on the inside)
-    cr:set_source_rgba(0, 0, 0, 0)
-    cr:set_line_width(2*bw)
-    cr:stroke()
-    c.shape_clip = img._native
-    img:finish()
+    shape.update.bounding(c)
+    shape.update.clip(c)
 end
 
 --- Update a client's bounding shape from the shape the client set itself.