2021-03-11 03:38:02 +00:00
<!doctype html>
< html lang = "en" > < head >
< meta charset = "utf-8" >
< meta name = "viewport" content = "width=device-width, initial-scale=1" >
< title > Hypertext 🌱 Digital Garden< / title >
< meta name = "description" content = "<p>Hypertext Markup Language & lt ; / p & gt ;
">
< link rel = "stylesheet" href = "/assets/css/style.css" > < link type = "application/atom+xml" rel = "alternate" href = "/feed.xml" title = "Digital Garden" / > < / head > < body class = "dark-green garamond links-dark-green bg-washed-green" > < header class = "f-6 flex" > < a class = "no-underline-hover" rel = "author" href = "/" > Digital Garden< / a > < nav > , < a class = "no-underline-hover" href = "/about/" > About< / a > < / nav > < / header > < main aria-label = "Content" >
< div class = "flex" >
< article class = "w-50" >
< div >
< h1 > Hypertext< / h1 >
2021-03-11 04:13:07 +00:00
< time datetime = "2021-03-11T04:12:44+00:00" >
2021-03-11 03:38:02 +00:00
Last updated on March 11, 2021
< / time >
< / div >
< div id = "notes-entry-container" >
< content >
< p > Hypertext Markup Language< / p >
< / content >
< side style = "font-size: 0.9em" >
< h3 style = "margin-bottom: 1em" > Notes mentioning this note< / h3 >
< div style = "display: grid; grid-gap: 1em; grid-template-columns: repeat(1fr);" >
< div class = "backlink-box" >
< a class = "internal-link" href = "/statement-of-intent" > Statement of Intent< / a > < br >
< div style = "font-size: 0.9em" > Hypha’ & Creative Misuse. Drawing...< / div >
< / div >
< / div >
< / side >
< / div >
< / article >
< div class = "w-50" >
< p > Here are all the notes in this garden, along with their links, visualized as a graph.< / p >
< script src = "https://cdnjs.cloudflare.com/ajax/libs/d3/5.16.0/d3.min.js"
integrity="sha512-FHsFVKQ/T1KWJDGSbrUhTJyS1ph3eRrxI228ND0EGaEp6v4a/vGwPWd3Dtd/+9cI7ccofZvl/wulICEurHN1pg=="
crossorigin="anonymous">< / script >
< div id = "zoom" > < / div >
< div id = "graph-wrapper" >
< script >
const MINIMAL_NODE_SIZE = 8;
const MAX_NODE_SIZE = 12;
const ACTIVE_RADIUS_FACTOR = 1.5;
const STROKE = 1;
const FONT_SIZE = 16;
const TICKS = 200;
const FONT_BASELINE = 40;
const MAX_LABEL_LENGTH = 50;
const graphData = {"edges":[{"source":"229320080329284392969231993","target":"50678562812897"},{"source":"229320080329284392969231993","target":"72697617314704"},{"source":"229320080329284392969231993","target":"36028"}],"nodes":[{"id":"50678562812897","path":"/hypertext","label":"Hypertext"},{"id":"72697617314704","path":"/protocols","label":"Protocols"},{"id":"36028","path":"/rss","label":"RSS"},{"id":"229320080329284392969231993","path":"/statement-of-intent","label":"Statement of Intent"}]}
let nodesData = graphData.nodes;
let linksData = graphData.edges;
const nodeSize = {};
const updateNodeSize = () => {
nodesData.forEach((el) => {
let weight =
3 *
Math.sqrt(
linksData.filter((l) => l.source === el.id || l.target === el.id)
.length + 1
);
if (weight < MINIMAL_NODE_SIZE ) {
weight = MINIMAL_NODE_SIZE;
} else if (weight > MAX_NODE_SIZE) {
weight = MAX_NODE_SIZE;
}
nodeSize[el.id] = weight;
});
};
const onClick = (d) => {
window.location = d.path
};
const onMouseover = function (d) {
const relatedNodesSet = new Set();
linksData
.filter((n) => n.target.id == d.id || n.source.id == d.id)
.forEach((n) => {
relatedNodesSet.add(n.target.id);
relatedNodesSet.add(n.source.id);
});
node.attr("class", (node_d) => {
if (node_d.id !== d.id & & !relatedNodesSet.has(node_d.id)) {
return "inactive";
}
return "";
});
link.attr("class", (link_d) => {
if (link_d.source.id !== d.id & & link_d.target.id !== d.id) {
return "inactive";
}
return "";
});
link.attr("stroke-width", (link_d) => {
if (link_d.source.id === d.id || link_d.target.id === d.id) {
return STROKE * 4;
}
return STROKE;
});
text.attr("class", (text_d) => {
if (text_d.id !== d.id & & !relatedNodesSet.has(text_d.id)) {
return "inactive";
}
return "";
});
};
const onMouseout = function (d) {
node.attr("class", "");
link.attr("class", "");
text.attr("class", "");
link.attr("stroke-width", STROKE);
};
const sameNodes = (previous, next) => {
if (next.length !== previous.length) {
return false;
}
const map = new Map();
for (const node of previous) {
map.set(node.id, node.label);
}
for (const node of next) {
const found = map.get(node.id);
if (!found || found !== node.title) {
return false;
}
}
return true;
};
const sameEdges = (previous, next) => {
if (next.length !== previous.length) {
return false;
}
const set = new Set();
for (const edge of previous) {
set.add(`${edge.source.id}-${edge.target.id}`);
}
for (const edge of next) {
if (!set.has(`${edge.source}-${edge.target}`)) {
return false;
}
}
return true;
};
const graphWrapper = document.getElementById('graph-wrapper')
const element = document.createElementNS("http://www.w3.org/2000/svg", "svg");
element.setAttribute("width", graphWrapper.getBoundingClientRect().width);
element.setAttribute("height", window.innerHeight * 0.8);
graphWrapper.appendChild(element);
const reportWindowSize = () => {
element.setAttribute("width", window.innerWidth);
element.setAttribute("height", window.innerHeight);
};
window.onresize = reportWindowSize;
const svg = d3.select("svg");
const width = Number(svg.attr("width"));
const height = Number(svg.attr("height"));
let zoomLevel = 1;
const simulation = d3
.forceSimulation(nodesData)
.force("forceX", d3.forceX().x(width / 2))
.force("forceY", d3.forceY().y(height / 2))
.force("charge", d3.forceManyBody())
.force(
"link",
d3
.forceLink(linksData)
.id((d) => d.id)
.distance(70)
)
.force("center", d3.forceCenter(width / 2, height / 2))
.force("collision", d3.forceCollide().radius(80))
.stop();
const g = svg.append("g");
let link = g.append("g").attr("class", "links").selectAll(".link");
let node = g.append("g").attr("class", "nodes").selectAll(".node");
let text = g.append("g").attr("class", "text").selectAll(".text");
const resize = () => {
if (d3.event) {
const scale = d3.event.transform;
zoomLevel = scale.k;
g.attr("transform", scale);
}
const zoomOrKeep = (value) => (zoomLevel >= 1 ? value / zoomLevel : value);
const font = Math.max(Math.round(zoomOrKeep(FONT_SIZE)), 1);
text.attr("font-size", (d) => font);
text.attr("y", (d) => d.y - zoomOrKeep(FONT_BASELINE) + 8);
link.attr("stroke-width", zoomOrKeep(STROKE));
node.attr("r", (d) => {
return zoomOrKeep(nodeSize[d.id]);
});
svg
.selectAll("circle")
.filter((_d, i, nodes) => d3.select(nodes[i]).attr("active"))
.attr("r", (d) => zoomOrKeep(ACTIVE_RADIUS_FACTOR * nodeSize[d.id]));
document.getElementById("zoom").innerHTML = zoomLevel.toFixed(2);
};
const ticked = () => {
node.attr("cx", (d) => d.x).attr("cy", (d) => d.y);
text
.attr("x", (d) => d.x)
.attr("y", (d) => d.y - (FONT_BASELINE - nodeSize[d.id]) / zoomLevel);
link
.attr("x1", (d) => d.source.x)
.attr("y1", (d) => d.source.y)
.attr("x2", (d) => d.target.x)
.attr("y2", (d) => d.target.y);
};
const restart = () => {
updateNodeSize();
node = node.data(nodesData, (d) => d.id);
node.exit().remove();
node = node
.enter()
.append("circle")
.attr("r", (d) => {
return nodeSize[d.id];
})
.on("click", onClick)
.on("mouseover", onMouseover)
.on("mouseout", onMouseout)
.merge(node);
link = link.data(linksData, (d) => `${d.source.id}-${d.target.id}`);
link.exit().remove();
link = link.enter().append("line").attr("stroke-width", STROKE).merge(link);
text = text.data(nodesData, (d) => d.label);
text.exit().remove();
text = text
.enter()
.append("text")
.text((d) => shorten(d.label.replace(/_*/g, ""), MAX_LABEL_LENGTH))
.attr("font-size", `${FONT_SIZE}px`)
.attr("text-anchor", "middle")
.attr("alignment-baseline", "central")
.on("click", onClick)
.on("mouseover", onMouseover)
.on("mouseout", onMouseout)
.merge(text);
node.attr("active", (d) => isCurrentPath(d.path) ? true : null);
text.attr("active", (d) => isCurrentPath(d.path) ? true : null);
simulation.nodes(nodesData);
simulation.force("link").links(linksData);
simulation.alpha(1).restart();
simulation.stop();
for (let i = 0; i < TICKS ; i + + ) {
simulation.tick();
}
ticked();
};
const zoomHandler = d3.zoom().scaleExtent([0.2, 3]).on("zoom", resize);
zoomHandler(svg);
restart();
function isCurrentPath(notePath) {
return window.location.pathname.includes(notePath)
}
function shorten(str, maxLen, separator = ' ') {
if (str.length < = maxLen) return str;
return str.substr(0, str.lastIndexOf(separator, maxLen)) + '...';
}
< / script >
< / div >
< / div >
< / div >
< / main > < footer >
< / footer > <!-- That file is not particularly elegant. This will need a refactor at some point. -->
< div style = "opacity: 0; display: none;" id = 'tooltip-wrapper' >
< div id = 'tooltip-content' >
< / div >
< / div >
< iframe style = "display: none; height: 0; width: 0;" id = 'link-preview-iframe' src = "" >
< / iframe >
< script >
var opacityTimeout;
var contentTimeout;
var transitionDurationMs = 100;
var iframe = document.getElementById('link-preview-iframe')
var tooltipWrapper = document.getElementById('tooltip-wrapper')
var tooltipContent = document.getElementById('tooltip-content')
function hideTooltip() {
opacityTimeout = setTimeout(function() {
tooltipWrapper.style.opacity = 0;
contentTimeout = setTimeout(function() {
tooltipContent.innerHTML = '';
tooltipWrapper.style.display = 'none';
}, transitionDurationMs + 1);
}, transitionDurationMs)
}
function showTooltip(event) {
var elem = event.target;
var elem_props = elem.getClientRects()[elem.getClientRects().length - 1];
var top = window.pageYOffset || document.documentElement.scrollTop
if (event.target.host === window.location.host) {
iframe.src = event.target.href
iframe.onload = function() {
tooltipContentHtml = ''
tooltipContentHtml += '< div style = "font-weight: bold;" > ' + iframe.contentWindow.document.querySelector('h1').innerHTML + '< / div > '
tooltipContentHtml += iframe.contentWindow.document.querySelector('content').innerHTML
tooltipContent.innerHTML = tooltipContentHtml
tooltipWrapper.style.display = 'block';
setTimeout(function() {
tooltipWrapper.style.opacity = 1;
}, 1)
}
tooltipWrapper.style.left = elem_props.left - (tooltipWrapper.offsetWidth / 2) + (elem_props.width / 2) + "px";
if ((window.innerHeight - elem_props.top) < (tooltipWrapper.offsetHeight)) {
tooltipWrapper.style.top = elem_props.top + top - tooltipWrapper.offsetHeight - 10 + "px";
} else if ((window.innerHeight - elem_props.top) > (tooltipWrapper.offsetHeight)) {
tooltipWrapper.style.top = elem_props.top + top + 35 + "px";
}
if ((elem_props.left + (elem_props.width / 2)) < (tooltipWrapper.offsetWidth / 2)) {
tooltipWrapper.style.left = "10px";
} else if ((document.body.clientWidth - elem_props.left - (elem_props.width / 2)) < (tooltipWrapper.offsetWidth / 2)) {
tooltipWrapper.style.left = document.body.clientWidth - tooltipWrapper.offsetWidth - 20 + "px";
}
}
}
function setupListeners(linkElement) {
linkElement.addEventListener('mouseleave', function(_event) {
hideTooltip();
});
tooltipWrapper.addEventListener('mouseleave', function(_event) {
hideTooltip();
});
linkElement.addEventListener('mouseenter', function(event) {
clearTimeout(opacityTimeout);
clearTimeout(contentTimeout);
showTooltip(event);
});
tooltipWrapper.addEventListener('mouseenter', function(event) {
clearTimeout(opacityTimeout);
clearTimeout(contentTimeout);
});
}
document.querySelectorAll('content a').forEach(setupListeners);
< / script >
2021-03-11 03:45:40 +00:00
< script src = "/assets/js/scripts.js" async > < / script >
2021-03-11 03:38:02 +00:00
< / body >
< / html >
