tilt.jquery.js

'use strict';

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

(function (factory) {
    if (typeof define === 'function' && define.amd) {
        // AMD. Register as an anonymous module.
        define(['jquery'], factory);
    } else if ((typeof module === 'undefined' ? 'undefined' : _typeof(module)) === 'object' && module.exports) {
        // Node/CommonJS
        module.exports = function (root, jQuery) {
            if (jQuery === undefined) {
                // require('jQuery') returns a factory that requires window to
                // build a jQuery instance, we normalize how we use modules
                // that require this pattern but the window provided is a noop
                // if it's defined (how jquery works)
                if (typeof window !== 'undefined') {
                    jQuery = require('jquery');
                } else {
                    jQuery = require('jquery')(root);
                }
            }
            factory(jQuery);
            return jQuery;
        };
    } else {
        // Browser globals
        factory(jQuery);
    }
})(function ($) {
    $.fn.tilt = function (options) {

        /**
         * RequestAnimationFrame
         */
        var requestTick = function requestTick() {
            if (this.ticking) return;
            requestAnimationFrame(updateTransforms.bind(this));
            this.ticking = true;
        };

        /**
         * Bind mouse movement evens on instance
         */
        var bindEvents = function bindEvents() {
            var _this = this;
            $(this).on('mousemove', mouseMove);
            $(this).on('mouseenter', mouseEnter);
            if (this.settings.reset) $(this).on('mouseleave', mouseLeave);
            if (this.settings.glare) $(window).on('resize', updateGlareSize.bind(_this));
        };

        /**
         * Set transition only on mouse leave and mouse enter so it doesn't influence mouse move transforms
         */
        var setTransition = function setTransition() {
            var _this2 = this;

            if (this.timeout !== undefined) clearTimeout(this.timeout);
            $(this).css({ 'transition': this.settings.speed + 'ms ' + this.settings.easing });
            if (this.settings.glare) this.glareElement.css({ 'transition': 'opacity ' + this.settings.speed + 'ms ' + this.settings.easing });
            this.timeout = setTimeout(function () {
                $(_this2).css({ 'transition': '' });
                if (_this2.settings.glare) _this2.glareElement.css({ 'transition': '' });
            }, this.settings.speed);
        };

        /**
         * When user mouse enters tilt element
         */
        var mouseEnter = function mouseEnter(event) {
            this.ticking = false;
            $(this).css({ 'will-change': 'transform' });
            setTransition.call(this);

            // Trigger change event
            $(this).trigger("tilt.mouseEnter");
        };

        /**
         * Return the x,y position of the mouse on the tilt element
         * @returns {{x: *, y: *}}
         */
        var getMousePositions = function getMousePositions(event) {
            if (typeof event === "undefined") {
                event = {
                    pageX: $(this).offset().left + $(this).outerWidth() / 2,
                    pageY: $(this).offset().top + $(this).outerHeight() / 2
                };
            }
            return { x: event.pageX, y: event.pageY };
        };

        /**
         * When user mouse moves over the tilt element
         */
        var mouseMove = function mouseMove(event) {
            this.mousePositions = getMousePositions(event);
            requestTick.call(this);
        };

        /**
         * When user mouse leaves tilt element
         */
        var mouseLeave = function mouseLeave() {
            setTransition.call(this);
            this.reset = true;
            requestTick.call(this);

            // Trigger change event
            $(this).trigger("tilt.mouseLeave");
        };

        /**
         * Get tilt values
         *
         * @returns {{x: tilt value, y: tilt value}}
         */
        var getValues = function getValues() {
            var width = $(this).outerWidth();
            var height = $(this).outerHeight();
            var left = $(this).offset().left;
            var top = $(this).offset().top;
            var percentageX = (this.mousePositions.x - left) / width;
            var percentageY = (this.mousePositions.y - top) / height;
            // x or y position inside instance / width of instance = percentage of position inside instance * the max tilt value
            var tiltX = (this.settings.maxTilt / 2 - percentageX * this.settings.maxTilt).toFixed(2);
            var tiltY = (percentageY * this.settings.maxTilt - this.settings.maxTilt / 2).toFixed(2);
            // angle
            var angle = Math.atan2(this.mousePositions.x - (left + width / 2), -(this.mousePositions.y - (top + height / 2))) * (180 / Math.PI);
            // Return x & y tilt values
            return { tiltX: tiltX, tiltY: tiltY, 'percentageX': percentageX * 100, 'percentageY': percentageY * 100, angle: angle };
        };

        /**
         * Update tilt transforms on mousemove
         */
        var updateTransforms = function updateTransforms() {
            this.transforms = getValues.call(this);

            if (this.reset) {
                this.reset = false;
                $(this).css('transform', 'perspective(' + this.settings.perspective + 'px) rotateX(0deg) rotateY(0deg)');

                // Rotate glare if enabled
                if (this.settings.glare) {
                    this.glareElement.css('transform', 'rotate(180deg) translate(-50%, -50%)');
                    this.glareElement.css('opacity', '0');
                }

                return;
            } else {
                $(this).css('transform', 'perspective(' + this.settings.perspective + 'px) rotateX(' + (this.settings.disableAxis === 'x' ? 0 : this.transforms.tiltY) + 'deg) rotateY(' + (this.settings.disableAxis === 'y' ? 0 : this.transforms.tiltX) + 'deg) scale3d(' + this.settings.scale + ',' + this.settings.scale + ',' + this.settings.scale + ')');

                // Rotate glare if enabled
                if (this.settings.glare) {
                    this.glareElement.css('transform', 'rotate(' + this.transforms.angle + 'deg) translate(-50%, -50%)');
                    this.glareElement.css('opacity', '' + this.transforms.percentageY * this.settings.maxGlare / 100);
                }
            }

            // Trigger change event
            $(this).trigger("change", [this.transforms]);

            this.ticking = false;
        };

        /**
         * Prepare elements
         */
        var prepareGlare = function prepareGlare() {
            var glarePrerender = this.settings.glarePrerender;

            // If option pre-render is enabled we assume all html/css is present for an optimal glare effect.
            if (!glarePrerender)
                // Create glare element
                $(this).append('<div class="js-tilt-glare"><div class="js-tilt-glare-inner"></div></div>');

            // Store glare selector if glare is enabled
            this.glareElementWrapper = $(this).find(".js-tilt-glare");
            this.glareElement = $(this).find(".js-tilt-glare-inner");

            // Remember? We assume all css is already set, so just return
            if (glarePrerender) return;

            // Abstracted re-usable glare styles
            var stretch = {
                'position': 'absolute',
                'top': '0',
                'left': '0',
                'width': '100%',
                'height': '100%'
            };

            // Style glare wrapper
            this.glareElementWrapper.css(stretch).css({
                'overflow': 'hidden',
                'pointer-events': 'none'
            });

            // Style glare element
            this.glareElement.css({
                'position': 'absolute',
                'top': '50%',
                'left': '50%',
                'background-image': 'linear-gradient(0deg, rgba(255,255,255,0) 0%, rgba(255,255,255,1) 100%)',
                'width': '' + $(this).outerWidth() * 2,
                'height': '' + $(this).outerWidth() * 2,
                'transform': 'rotate(180deg) translate(-50%, -50%)',
                'transform-origin': '0% 0%',
                'opacity': '0'
            });
        };

        /**
         * Update glare on resize
         */
        var updateGlareSize = function updateGlareSize() {
            this.glareElement.css({
                'width': '' + $(this).outerWidth() * 2,
                'height': '' + $(this).outerWidth() * 2
            });
        };

        /**
         * Public methods
         */
        $.fn.tilt.destroy = function () {
            $(this).each(function () {
                $(this).find('.js-tilt-glare').remove();
                $(this).css({ 'will-change': '', 'transform': '' });
                $(this).off('mousemove mouseenter mouseleave');
            });
        };

        $.fn.tilt.getValues = function () {
            var results = [];
            $(this).each(function () {
                this.mousePositions = getMousePositions.call(this);
                results.push(getValues.call(this));
            });
            return results;
        };

        $.fn.tilt.reset = function () {
            $(this).each(function () {
                var _this3 = this;

                this.mousePositions = getMousePositions.call(this);
                this.settings = $(this).data('settings');
                mouseLeave.call(this);
                setTimeout(function () {
                    _this3.reset = false;
                }, this.settings.transition);
            });
        };

        /**
         * Loop every instance
         */
        return this.each(function () {
            var _this4 = this;

            /**
             * Default settings merged with user settings
             * Can be set trough data attributes or as parameter.
             * @type {*}
             */
            this.settings = $.extend({
                maxTilt: $(this).is('[data-tilt-max]') ? $(this).data('tilt-max') : 20,
                perspective: $(this).is('[data-tilt-perspective]') ? $(this).data('tilt-perspective') : 300,
                easing: $(this).is('[data-tilt-easing]') ? $(this).data('tilt-easing') : 'cubic-bezier(.03,.98,.52,.99)',
                scale: $(this).is('[data-tilt-scale]') ? $(this).data('tilt-scale') : '1',
                speed: $(this).is('[data-tilt-speed]') ? $(this).data('tilt-speed') : '400',
                transition: $(this).is('[data-tilt-transition]') ? $(this).data('tilt-transition') : true,
                disableAxis: $(this).is('[data-tilt-disable-axis]') ? $(this).data('tilt-disable-axis') : null,
                axis: $(this).is('[data-tilt-axis]') ? $(this).data('tilt-axis') : null,
                reset: $(this).is('[data-tilt-reset]') ? $(this).data('tilt-reset') : true,
                glare: $(this).is('[data-tilt-glare]') ? $(this).data('tilt-glare') : false,
                maxGlare: $(this).is('[data-tilt-maxglare]') ? $(this).data('tilt-maxglare') : 1
            }, options);

            // Add deprecation warning & set disableAxis to deprecated axis setting
            if (this.settings.axis !== null) {
                console.warn('Tilt.js: the axis setting has been renamed to disableAxis. See https://github.com/gijsroge/tilt.js/pull/26 for more information');
                this.settings.disableAxis = this.settings.axis;
            }

            this.init = function () {
                // Store settings
                $(_this4).data('settings', _this4.settings);

                // Prepare element
                if (_this4.settings.glare) prepareGlare.call(_this4);

                // Bind events
                bindEvents.call(_this4);
            };

            // Init
            this.init();
        });
    };

    /**
     * Auto load
     */
    $('[data-tilt]').tilt();

    return true;
});
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