Function handleTouchStart

src/Input/dragndrop.js:225–237

(e)

        },

        handleTouchStart = function (e) {
            if (e.touches.length === 1) {
                return handleSignleFingerTouch(e, e.touches[0]);
            } else if (e.touches.length === 2) {
                // handleTouchMove() will care about pinch zoom.
                stopPropagation(e);
                preventDefault(e);

                pinchZoomLength = getPinchZoomLength(e.touches[0], e.touches[1]);

            }
            // don't care about the rest.
        };


    element.addEventListener('mousedown', handleMouseDown);