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storymap.2.5.js
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storymap.2.5.js
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// Modified by Bo Zhao, zhao2@oregonstate.edu
// Originally obtained from http://atlefren.github.io/storymap/
// Updated on 05/04/2018 | version 2.5.0 | MIT License
(function ($) {
$.fn.autoplay = function (options){
var defaults = {
selector: 'section',
stepperSelector: '.storymap-scroll-down'
};
var settings = $.extend(defaults, options);
var i = 0;
var sceneNum = $(settings.selector).length - 1;
setInterval(function(){
if ( i < sceneNum){
if ($('.storymap-navbar').length !== 0) {
window.scrollBy(0, $($(settings.selector)[i+1]).offset().top - $(window).scrollTop() - $('.storymap-navbar').height() - 30);
} else {
window.scrollBy(0, $($(settings.selector)[i+1]).offset().top - $(window).scrollTop() - 10);
}
i += 1;
}
}, 3000);
};
$.fn.storymap = function (options) {
var defaults = {
selector: '[data-scene]',
triggerpos: '30%',
navbar: false,
navwidget: false,
legend: true,
loader: true,
flyto: false,
scalebar: false,
scrolldown: true,
progressline: true,
mapinteraction: false,
createMap: function () {
var map = L.map($('.storymap-map')[0], {zoomControl: false}).setView([44, -120], 7);
// L.tileLayer('http://cartodb-basemaps-{s}.global.ssl.fastly.net/light_all/{z}/{x}/{y}@2x.png').addTo(map);
return map;
}
};
var settings = $.extend(defaults, options);
if (typeof(L) === 'undefined') {
throw new Error('Storymap requires Leaflet.');
}
function getDistanceToTop(elem, top) {
var docViewTop = $(window).scrollTop();
var elemTop = $(elem).offset().top;
var dist = elemTop - docViewTop;
var d = top - dist;
if (d < 0) {
return $(document).height();
}
return d;
}
function highlightTopPara(sections, top) {
var distances = $.map(sections, function (element) {
var dist = getDistanceToTop(element, top);
return {
el: $(element),
distance: dist
};
});
function findMin(pre, cur) {
if (pre.distance > cur.distance) {
return cur;
} else {
return pre;
}
}
var closest = distances.reduce(findMin);
$.each(sections, function (key, element) {
var section = $(element);
if (section[0] !== closest.el[0]) {
section.trigger('notviewing');
}
// if (section.height() <= $(window).height() * 0.33 ) {
// section.height($(window).height() * 0.33)
// }
if (section.height() <= $(window).height() * 0.33 && section.has("img").length === 0) {
section.height($(window).height() * 0.33)
}
});
if (!closest.el.hasClass('viewing')) {
closest.el.trigger('viewing');
}
}
function watchHighlight(element, searchfor, top) {
var sections = element.find(searchfor);
highlightTopPara(sections, top);
$(window).scroll(function () {
highlightTopPara(sections, top);
});
}
//support video for IE 8 and 9.
document.createElement('video');
var makeStoryMap = function (element, scenes) {
$(element).addClass("storymap");
var topElem = $('<div class="storymap-trigger"></div>')
.css('top', settings.triggerpos);
$('body').append(topElem);
var top = topElem.offset().top - $(window).scrollTop();
var searchfor = settings.selector;
var sections = $(element).find(searchfor);
var map = settings.createMap();
var currentLayerGroup = L.layerGroup().addTo(map);
var nav = $("nav");
if (settings.baselayer) {
// add an base map, which can be either OSM, mapbox, tilelayer, wmslayer or those designed by yourself.
settings.baselayer.layer.addTo(map);
}
if (settings.legend) {
$(".storymap").append("<div class='storymap-legend' />")
}
if (settings.scrolldown) {
$(".storymap").append("<div class='zoomIn infinite material-icons d-flex fixed-bottom mb-5 storymap-scroll-down'>keyboard_arrow_down</div>")
}
if (settings.scalebar) {
L.control.scale({
position: "bottomright",
metric: false
}).addTo(map);
}
if (settings.progressline) {
$(".storymap").append("<div class='storymap-progressline' />")
}
if (settings.navwidget) {
$(".storymap").append("<div class='storymap-navwidget text-center'/>")
}
if (settings.loader) {
$(".storymap").append("<div class='material-icons storymap-loader'> autorenew </div>")
}
$(".storymap-map .leaflet-control-attribution")
.addClass("storymap-attribution")
.html("<a href='https://github.com/jakobzhao/storymap'><img src='http://jakobzhao.github.io/storymap/img/logo.png' width='18px' target='_blank' > storymap.js </a>");
if (settings.credits) {
$(".storymap-attribution").find("a").prepend(settings.credits + " | ");
}
if (settings.mapinteraction) {
map.dragging.enable();
map.touchZoom.enable();
map.doubleClickZoom.enable();
map.scrollWheelZoom.enable();
map.boxZoom.enable();
map.keyboard.enable();
if (map.tap) map.tap.enable();
$("storymap-map").css("cursor", "grab");
} else {
map.dragging.disable();
map.touchZoom.disable();
map.doubleClickZoom.disable();
map.scrollWheelZoom.disable();
map.boxZoom.disable();
map.keyboard.disable();
if (map.tap) map.tap.disable();
$("storymap-map").css("cursor", "pointer");
}
if (settings.navbar && nav.length > 0) {
//$(".navbar-header").after("<div class='collapse navbar-collapse nav navbar-nav navbar-right storymap-navbar'>");
$.each(sections, function (key, element) {
var section = $(element);
// if no name attribute for a specific scene, the name on the navigation bar will be the object name.
if (typeof(scenes[section.data('scene')].name) === "undefined") {
sceneName = section.data('scene');
} else {
sceneName = scenes[section.data('scene')].name.replace(" ", " ");
}
scrollScript = "javascript:window.scrollBy(0, $('section[data-scene=\\'" + section.data('scene') + "\\']').offset().top - $(window).scrollTop() - $('.storymap-navbar').height() - 30);";
// $(".storymap-navbar").append('<li><a title="' + sceneName + '" href="' + scrollScript + '" >' + sceneName + '</a></li>');
$(".navbar-nav").append('<li class="nav-item"><a class="nav-link"' + '" href="' + scrollScript + '" >' + sceneName + '</a></li>');
});
}
$.each(sections, function (key, element) {
var section = $(element);
var path = section.data('background');
if (typeof path !== 'undefined') {
if (path.indexOf("jpg") >= 0 || path.indexOf("jpeg") >= 0 || path.indexOf("png") >= 0 || path.indexOf("bmp") >= 0 || path.indexOf("gif") >= 0) {
$("head").append("<style> ." + section.data('scene') + "-bg-img { background: url(" + path + ") no-repeat center center fixed; -webkit-background-size: cover; -moz-background-size: cover; -o-background-size: cover; background-size: cover; }</style>");
$(section).find(".fullscreen").addClass(section.data('scene') + "-bg-img");
} else if (path.indexOf("mp4") >= 0) {
$(section).find(".fullscreen").before('<video class="fullscreen canvas-center" playsinline autoplay muted loop><source src=' + path + ' type="video/mp4"></video>')
} else {
console.log(path);
}
}
});
if (!String.prototype.includes) {
String.prototype.includes = function () {
'use strict';
return String.prototype.indexOf.apply(this, arguments) !== -1;
};
}
// make nav bar on the top.
if (nav.length !== 0) {
var navbar_height = nav.height();
var origin_main_top = nav.position().top;
$(".storymap-story").css({
top: (navbar_height + origin_main_top).toString() + "px"
});
}
$.each(layers, function (key, layer) {
// layer = layer.layer;
layer.layer.on('s');
layer.layer.on('load', function () {
$(".storymap-loader").fadeTo(1000, 0);
})
});
function showMap(key) {
currentLayerGroup.clearLayers();
var scene = scenes[key];
var legendContent = "";
if (typeof $("section[data-scene='" + key + "']").data("background") !== 'undefined') {
$(".storymap-loader").fadeTo(0, 0);
} else if (typeof $("section[data-scene='" + key + "']").data("background") === 'undefined') {
for (var i = 0; i < scene.layers.length; i++) {
$(".storymap-loader").fadeTo(0, 1);
currentLayerGroup.addLayer(scene.layers[i].layer);
if (typeof scene.layers[i].legend !== 'undefined') {
legendContent += scene.layers[i].legend;
}
}
$(".storymap-loader").fadeTo(1, 0);
}
// the condition legendContent != "" will make sure the legend will only be added on when there is some contents in the legend.
if (settings.legend && legendContent !== "") {
$(".storymap-legend")
.html(legendContent)
.show();
} else {
$(".storymap-legend").hide();
}
if (settings.flyto) {
map.flyTo([scene.lat, scene.lng], scene.zoom, {
animate: true,
easeLinearity: 1,
duration: 2 // in seconds
})
} else {
map.setView([scene.lat, scene.lng], scene.zoom, {
animate: false,
easeLinearity: 1,
duration: 2 // in seconds
})
}
map.invalidateSize();
}
function executeScript(key) {
var scene = scenes[key];
var section = $('section[data-scene="' + key +'"]')
scene.script(key, map, section);
}
sections.on('viewing', function () {
$(this)
.removeClass('invisible')
.addClass('visible')
.addClass('viewing');
var scrollDown = $(".storymap-scroll-down");
scrollDown
.addClass('justify-content-center')
.removeClass('justify-content-left');
if (typeof $(this).data("background") !== 'undefined') {
$(this)
.removeClass('justify-content-center')
.addClass('justify-content-left')
.addClass('section-opacity');
scrollDown
.removeClass('justify-content-left')
.addClass('justify-content-center');
}
if ($(this).data('scene') === sections.last().data('scene')) {
scrollDown
.html("home")
.addClass('justify-content-center')
.removeClass('justify-content-left');
} else {
scrollDown
.html("keyboard_arrow_down")
.removeClass('justify-content-center')
.addClass('justify-content-left');
}
// Bounce the storymap-scroll-down icon when the icon is on the front page.
if ($(this).data('scene') === sections.first().data('scene') || $(this).data('scene') === sections.last().data('scene')) {
scrollDown
.addClass("animated")
.addClass('justify-content-center')
.removeClass('justify-content-left');
} else {
scrollDown
.removeClass("animated");
}
showMap($(this).data('scene'));
if (typeof(scenes[$(this).data('scene')].script) !== 'undefined') {
executeScript($(this).data('scene'));
}
});
sections.on('notviewing', function () {
$(this)
.removeClass('viewing')
.removeClass('visible')
.addClass('invisible');
});
watchHighlight(element, searchfor, top);
window.scrollTo(0, 1);
$('.storymap-scroll-down').click(function () {
var viewing = $(".viewing");
if (viewing.data("scene") !== $("section[data-scene]:last").data('scene')) {
if (nav.length !== 0) {
window.scrollBy(0, viewing.offset().top + viewing.height() - $(window).scrollTop() - $('.storymap-navbar').height() - 10);
} else {
window.scrollBy(0, viewing.offset().top + viewing.height() - $(window).scrollTop() - 10);
}
} else {
window.scrollTo(0, 0);
}
});
// create a progress line
$(window).scroll(function () {
var wintop = $(window).scrollTop(),
docheight = $(document).height(),
winheight = $(window).height();
var scrolled = (wintop / (docheight - winheight)) * 100;
$('.storymap-progressline').css('width', (scrolled + '%'));
});
// create the navigation widget to the left side of the browser's window.
if (settings.navwidget) {
$.each(sections, function (key, element) {
var section = $(element);
// if no name attribute for a specific scene, the name on the navigation bar will be the object name.
if (typeof(scenes[section.data('scene')].name) === "undefined") {
sceneName = section.data('scene');
} else {
sceneName = scenes[section.data('scene')].name.replace(" ", " ");
}
//if there is a navbar.
if (nav.length !== 0) {
scrollScript = "javascript:window.scrollBy(0, $('section[data-scene=\\'" + section.data('scene') + "\\']').offset().top - $(window).scrollTop() - $('.storymap-navbar').height() - 30);";
} else {
scrollScript = "javascript:window.scrollBy(0, $('section[data-scene=\\'" + section.data('scene') + "\\']').offset().top - $(window).scrollTop() - 10);";
}
// if key is equal to 0, meaning it is the first scene.
if (key === 0) {
$(".storymap-navwidget").append('<li><a class="material-icons" style="font-size: 16px" data-toggle="tooltip" title="' + sceneName + '" href="' + scrollScript + '" >home</a></li>');
} else {
$(".storymap-navwidget").append('<li><a class="material-icons" style="font-size: 12px" data-toggle="tooltip" title="' + sceneName + '" href="' + scrollScript + '" >lens</a></li>');
}
});
$('[data-toggle="tooltip"]').tooltip({
placement: 'right',
html: true
});
$(".storymap-navwidget").hover(function () {
$(this).fadeTo(100, 0.8);
}, function () {
$(this).fadeTo(300, 0);
});
}
};
makeStoryMap(this, settings.scenes);
window.scrollTo(0, 0);
return this;
}
}(jQuery));