|
/* |
|
Copyright (C) 2014 Nicholas Bollweg |
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy |
|
of this software and associated documentation files (the "Software"), to deal |
|
in the Software without restriction, including without limitation the rights |
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
|
copies of the Software, and to permit persons to whom the Software is |
|
furnished to do so, subject to the following conditions: |
|
|
|
The above copyright notice and this permission notice shall be included in |
|
all copies or substantial portions of the Software. |
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
|
THE SOFTWARE. |
|
*/ |
|
|
|
;Reveal.SvgFragment = (function(Reveal){ |
|
"use strict"; |
|
var window = this, |
|
document = window.document, |
|
proto = window.location.protocol, |
|
local = proto === "file:", |
|
d3 = window.d3, |
|
defaults = { |
|
d3: (local ? "http:" : proto) + "//cdn.jsdelivr.net/d3js/latest/d3.min.js", |
|
selector: "title" |
|
}; |
|
|
|
// the main function, to be called when d3 is available |
|
function api(){ |
|
d3 = d3 || window.d3; |
|
var container = d3.selectAll("[data-svg-fragment]"), |
|
slides = d3.select(".slides"); |
|
|
|
container.data(function(){ |
|
return container[0].map(function(d){ |
|
var $ = d3.select(d); |
|
return { |
|
container: $, |
|
url: $.attr("data-svg-fragment") |
|
}; |
|
}); |
|
}); |
|
|
|
container.append("iframe") |
|
.attr({ |
|
src: function(item){ return item.url; }, |
|
// TODO: make this an option? |
|
scrolling: "no" |
|
}) |
|
.on("load", api.iframed); |
|
|
|
Reveal.addEventListener("fragmentshown", api.listen(container, true)); |
|
Reveal.addEventListener("fragmenthidden", api.listen(container)); |
|
|
|
return api; |
|
}; |
|
|
|
|
|
// generate listeners for reveal events |
|
api.listen = function(container, show){ |
|
return function(event){ |
|
var fragment = d3.select(event.fragment); |
|
container.filter(function(){ |
|
return this === event.fragment.parentNode; |
|
}).each(function(item){ |
|
api.toggle(fragment, item, show); |
|
}); |
|
|
|
return api; |
|
}; |
|
}; |
|
|
|
|
|
// toggle a fragment |
|
// TODO: add hide |
|
api.toggle = function(fragment, item, show){ |
|
if(!item.svg){ return; } |
|
var selector = fragment.attr(api.cfg("selector")); |
|
item.svg.selectAll(selector) |
|
.transition() |
|
.style({opacity: show ? 1 : 0}); |
|
|
|
return api; |
|
}; |
|
|
|
|
|
// the iframe was created for this item |
|
api.iframed = function(item){ |
|
item.iframe = d3.select(this); |
|
item.idoc = d3.select(this.contentDocument); |
|
item.svg = item.idoc.select("svg"); |
|
item.dims = { |
|
width: item.svg.attr("width") || 100, |
|
height: item.svg.attr("height") || 100 |
|
}; |
|
item.iframe.attr(item.dims); |
|
// see https://groups.google.com/forum/#!topic/d3-js/mTBxTLi0q1o |
|
item.svg.attr({ |
|
width: "100%", |
|
height: "100%", |
|
viewBox: "0 0 "+ item.dims.width + " " + item.dims.height |
|
}); |
|
|
|
return api.clean(item); |
|
}; |
|
|
|
// prepare |
|
// TODO: smarter initialization? |
|
api.clean = function(item){ |
|
var base; |
|
item.container.selectAll(".fragment").each(function(){ |
|
item.svg.selectAll(d3.select(this).attr(api.cfg("selector"))) |
|
.style({opacity: 0}); |
|
}); |
|
|
|
if(base = item.url.match(/(?:#)(.*)$/)){ |
|
item.svg.selectAll(base[1]) |
|
.style({opacity: 1}); |
|
} |
|
|
|
return api; |
|
}; |
|
|
|
|
|
// preflight, call immediately it d3 is available, otherwise load the script |
|
api.init = function(){ |
|
var options = Reveal.getConfig().svgFragment || {}; |
|
if(window.d3){ |
|
api(); |
|
}else if(window.require){ |
|
require([api.cfg("d3")], function(_d3){ |
|
d3 = _d3; |
|
api(); |
|
}); |
|
}else{ |
|
api.load(api.cfg("d3"), api); |
|
} |
|
return api; |
|
}; |
|
|
|
|
|
// get configuration values (or defaults) |
|
api.cfg = function(opt){ |
|
var cfg = Reveal.getConfig().svgFragment || {}; |
|
|
|
return cfg.hasOwnProperty(opt) ? cfg[opt] : |
|
defaults.hasOwnProperty(opt) ? defaults[opt] : |
|
function(){ throw new Error("Unknown property: "+ opt); }; |
|
}; |
|
|
|
|
|
// load a script, jacked from search, i think |
|
api.load = function(url, callback){ |
|
var head = document.querySelector('head'), |
|
script = document.createElement('script'); |
|
|
|
// Wrapper for callback to make sure it only fires once |
|
var finish = function(){ |
|
if(typeof callback === 'function') { |
|
callback.call(); |
|
callback = null; |
|
} |
|
}; |
|
|
|
// IE |
|
script.onreadystatechange = function() { |
|
if (this.readyState === 'loaded') { |
|
finish(); |
|
} |
|
}; |
|
script.type = 'text/javascript'; |
|
script.src = url; |
|
script.onload = finish; |
|
|
|
// Normal browsers |
|
head.appendChild(script); |
|
|
|
return api; |
|
}; |
|
|
|
|
|
return api.init(); |
|
}).call(this, Reveal); |
+1