Function calculateDropOffset

draganddrop.js:201–219

(e)

            var uiOnDragOverFn = $parse(attr.uiOnDragOver);

            function calculateDropOffset(e) {
                var offset = {
                    x: e.offsetX,
                    y: e.offsetY
                };
                var target = e.target;

                while (target !== element[0]) {
                    offset.x = offset.x + target.offsetLeft;
                    offset.y = offset.y + target.offsetTop;

                    target = target.offsetParent;
                    if (!target) {
                        return null;
                    }
                }

                return offset;
            }

            function onDragOver(e) {
                if (e.preventDefault) {