cursor-position/lib/index.js

Simple module for getting the current mouse position in element or window.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
function isTouchEvent(event) {
    if (window.TouchEvent !== undefined) {
        return event instanceof TouchEvent;
    }
    return event.touches !== undefined;
}
var GetCursorPosition = function (opt) {
    if (!document)
        throw new Error('document is not defined');
    if (!window)
        throw new Error('window is not defined');
    var absolute = true;
    var scroll = false;
    var x = 0;
    var y = 0;
    var event = window.event || undefined;
    var element = undefined;
    if (opt) {
        if (opt.event !== undefined)
            event = opt.event;
        if (opt.absolute !== undefined)
            absolute = opt.absolute;
        if (opt.scroll !== undefined)
            scroll = opt.scroll;
    }
    if (!event)
        throw new Error('event is not defined');
    var touches = event.touches;
    if (event instanceof MouseEvent) {
        x = event.clientX;
        y = event.clientY;
    }
    if (isTouchEvent(event) && touches) {
        if (!touches[0]) {
            throw new Error('touch is not find');
        }
        x = touches[0].clientX;
        y = touches[0].clientY;
    }
    if (absolute && scroll) {
        x += window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft || 0;
        y += window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop || 0;
    }
    else if (!absolute && scroll) {
        if (!event.target)
            throw new Error('target is not defined');
        element = event.target;
        if (element instanceof Element && element instanceof HTMLElement) {
            x -= element.offsetLeft;
            y -= element.offsetTop;
            if (element.parentElement) {
                var obj = element.parentElement;
                while (obj) {
                    if (obj instanceof HTMLElement) {
                        x -= obj.offsetLeft;
                        y -= obj.offsetTop;
                        if (!obj.parentElement)
                            break;
                        obj = obj.parentElement;
                    }
                }
            }
            if (element.parentElement) {
                var obj = element.parentElement;
                while (obj) {
                    if (obj instanceof HTMLElement) {
                        x += obj.scrollLeft;
                        y += obj.scrollTop;
                        if (obj.scrollLeft || obj.scrollTop || !obj.parentElement)
                            break;
                        obj = obj.parentElement;
                    }
                }
            }
        }
    }
    else if (!absolute && !scroll) {
        if (!event.target)
            throw new Error('target is not defined');
        element = event.target;
        if (element instanceof Element && element instanceof HTMLElement) {
            x -= element.offsetLeft;
            y -= element.offsetTop;
            if (element.parentElement) {
                var obj = element.parentElement;
                while (obj) {
                    if (obj instanceof HTMLElement) {
                        x -= obj.offsetLeft;
                        y -= obj.offsetTop;
                        if (!obj.parentElement)
                            break;
                        obj = obj.parentElement;
                    }
                }
            }
        }
    }
    return { x: x, y: y };
};
exports.default = GetCursorPosition;