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280 lines
7.1 KiB
HTML
280 lines
7.1 KiB
HTML
6 years ago
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<title>Privacy</title>
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<link rel="stylesheet" href="style5.css">
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<style>
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* {
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margin: 0;
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padding: 0;
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box-sizing: border-box;
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}
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html, body {
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width: 100%;
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height: 100%;
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}
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h3 {
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color: black;
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padding-left: 30px;
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padding-top: 20px;
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}
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a:link, a:visited {
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background-color: #000000;
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color: white;
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padding: 14px 25px;
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text-align: center;
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text-decoration: none;
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display: inline-block;
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}
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div {
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height: 20%;
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text-align: center;
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font-size: 36px;
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padding: 20px;
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}
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svg {
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display: block;
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width: 50%;
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height: 50%;
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margin-left:auto;
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margin-right:auto;
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}
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.footer {
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position: fixed;
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left: 0;
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bottom: 0;
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width: 100%;
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height: 6%;
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color: white;
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background-color: black;
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text-align: center;
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}
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</style>
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</head>
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<header><br>
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<h1>PRIVACY?</h1>
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<p><span class="blink">Is privacy guaranteed in social networks?</blink></a></p>
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</header>
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<body>
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<br><br>
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<svg id="canvas" align="center"></svg>
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</body>
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<div class="wrapper">
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<div class="push"></div>
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</div>
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<footer class="footer"><a href="privacy-iframes.html">VIDEOS (4)</a><a href="privacy-iframes.html">ARTICLES (4)</a><a href="privacy-iframes.html">BOOKS (1)</a>
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<script>
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//find the element with id =message(in dom), return via function: document.getelementbyid, store it in var
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var svg = document.getElementById('canvas');
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var padding = 15;
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var circleRadius = 15;
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/**
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* Returns a random number between min (inclusive) and max (exclusive)
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* from: https://stackoverflow.com/questions/1527803/generating-random-whole-numbers-in-javascript-in-a-specific-range
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*/
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function getRandomArbitrary(min, max) {
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return Math.floor(Math.random() * (max - min) + min);
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}
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/**
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* Returns randomly either "true" or "false" with 50% chance for each one.
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* @returns {boolean}
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*/
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function getRandomBoolean() {
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return getRandomArbitrary(0, 2) === 1;
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}
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//when we execute sleep (...ms), program waits for (...ms)
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function sleep(time) {
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return new Promise(resolve => {
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setTimeout(() => {
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resolve();
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}, time);
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});
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}
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//The parseInt() function parses a string argument and returns an integer of the specified size of svg in pixels
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function pickARandomCirclePosition() {
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var w = parseInt(window.getComputedStyle(svg).width);
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var h = parseInt(window.getComputedStyle(svg).height);
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var x = getRandomArbitrary(padding + circleRadius, w - circleRadius - padding);
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var y = getRandomArbitrary(padding + circleRadius, h - circleRadius - padding);
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//return an object which has 2 properties, named x,y and value the value of var x,y
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return { x: x, y: y };
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}
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//======================================================================//
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// new code 2019.03.02:
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const messages = [
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"FOSDEM video",
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"BBC article",
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"INSTITURE OF NETWORK CULTURES article",
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"DMYTRI KLEINER video",
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"MASTODON video",
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"LAINBLOG article",
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"RADICAL NETWORKS Scuttlebutt video",
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"MANUEL CASTELLS PRESS book",
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"HOMEBREWSERVER article"
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];
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const clickedCircles = [];
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const links = [];
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const positions = [];
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class Question {
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constructor(text) {
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// Create property "text".
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this.text = text;
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const position = pickARandomCirclePosition();
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/*const position = positionsFromJson[positionFromJsonIndex++];*/
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positions.push(position);
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const htmlCircle = this.createCircle(position);
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const htmlText = this.createText(position, text);
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const onMouseenterShowText = () => { htmlText.style.display = 'block'; };
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const onMouseleaveHideText = () => { htmlText.style.display = 'none'; };
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htmlCircle.addEventListener('mouseleave', onMouseleaveHideText);
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htmlCircle.addEventListener('mouseenter', onMouseenterShowText);
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htmlCircle.addEventListener('mouseenter', () => {
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htmlCircle.style.fill = 'red';
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});
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htmlCircle.addEventListener('mouseleave', () => {
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htmlCircle.style.fill = 'black';
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});
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/*htmlCircle.addEventListener('click', () => {
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htmlText.style.display = 'block';
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htmlCircle.removeEventListener('mouseenter', onMouseenterShowText);
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htmlCircle.removeEventListener('mouseleave', onMouseleaveHideText);
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});*/
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htmlCircle.addEventListener('click', () => {
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//if(!clickedCircles.includes(htmlCircle)) {
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clickedCircles.push(htmlCircle);
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//}
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this.linkClickedWithPreviouslyClicked();
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//this.linkClickedWithAllPreviouslyClicked();
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});
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}
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createCircle(position) {
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const circle = document.createElementNS('http://www.w3.org/2000/svg', 'circle');
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circle.style.fill = 'black';
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circle.setAttribute('cx', position.x);
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circle.setAttribute('cy', position.y);
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circle.setAttribute('r', circleRadius);
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svg.appendChild(circle);
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return circle;
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}
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createText(position, textContent) {
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const text = document.createElementNS('http://www.w3.org/2000/svg', 'text');
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text.setAttribute('x', position.x + 2*circleRadius);
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text.setAttribute('y', position.y + circleRadius/2);
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text.textContent = textContent;
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text.style.display = 'none';
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text.style.fontStyle = "italic";
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text.style.fontStyle = "italic";
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text.style.fontFamily = "Courier";
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text.style.fontWeight = "bold";
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text.style.fontSize = "large";
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svg.appendChild(text);
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return text;
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}
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createLine(position1, position2) {
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const line = document.createElementNS('http://www.w3.org/2000/svg', 'line');
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line.setAttribute('x1', position1.x);
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line.setAttribute('y1', position1.y);
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line.setAttribute('x2', position2.x);
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line.setAttribute('y2', position2.y);
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line.setAttribute('stroke', 'black');
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svg.appendChild(line);
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return line;
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}
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linkClickedWithPreviouslyClicked() {
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const length = clickedCircles.length;
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if(length < 2) { return; }
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const circle1Pos = this.getCircleCenterPosition(clickedCircles[length - 1]);
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const circle2Pos = this.getCircleCenterPosition(clickedCircles[length - 2]);
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if(this.linkAlreadyExists(circle1Pos, circle2Pos)) { return; }
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const htmlLine = this.createLine(circle1Pos, circle2Pos);
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links.push(this.getLinkAsString(circle1Pos, circle2Pos));
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}
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getCircleCenterPosition(htmlCircle) {
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return {
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x: htmlCircle.cx.baseVal.value,
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y: htmlCircle.cy.baseVal.value,
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};
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}
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getLinkAsString(circle1Pos, circle2Pos) {
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const pos1AsString = circle1Pos.x + "," + circle1Pos.y;
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const pos2AsString = circle2Pos.x + "," + circle2Pos.y;
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const linkAsString = pos1AsString + "-" + pos2AsString;
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return linkAsString;
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}
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linkAlreadyExists(circle1Pos, circle2Pos) {
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return links.includes(this.getLinkAsString(circle1Pos, circle2Pos));
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}
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}
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async function network() {
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for(let i = 0; i < messages.length; i++) {
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const message = messages[i];
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new Question(message);
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//"await" works only inside async functions
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const delayBetweenQuestionCreations = 50;
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await sleep(delayBetweenQuestionCreations);
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}
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console.log(JSON.stringify(positions));
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}
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network();
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</script>
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</html>
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