for (int i = 0; i < stacks.size(); i++) {
            int width = i % DASH_W;
            int height = i / DASH_W;
            if (arrangedIcons.length >= height)
                arrangedIcons = ObjectArrays.concat(arrangedIcons, new ItemIcon[DASH_W]);
            ItemIcon[] current = arrangedIcons[height];
            current[width] = new ItemIcon(stacks.get(i));
        }