Files: a3b6e67a79ab15e9e37b77d0493be9a811e5862e / index.html
5894 bytesRaw
| 1 | |
| 2 | <html> |
| 3 | <head> |
| 4 | <meta charset=utf-8> |
| 5 | <title>ssb-activity</title> |
| 6 | <script src=common.js></script> |
| 7 | </head> |
| 8 | <body> |
| 9 | |
| 10 | <div style="text-align:center"> |
| 11 | <h2>Daily active users</h2> |
| 12 | <img id=graph src=day.png alt="Graph of daily active feeds"> |
| 13 | </div> |
| 14 | |
| 15 | <div id="day-info" style="float:right; text-align:right; visibility:hidden"> |
| 16 | <div><ins id="day"> </ins></div> |
| 17 | <div><ins id="day-users"> </ins> users</div> |
| 18 | </div> |
| 19 | |
| 20 | <div id="user-info" style="visibility:hidden"> |
| 21 | <div>User: <a id="user-link"><code id="user-id"> </code></a></div> |
| 22 | </div> |
| 23 | |
| 24 | <script> |
| 25 | var feedBase = 'https://viewer.scuttlebot.io/' |
| 26 | var ids, idColors, idsByColor = {} |
| 27 | var img = document.getElementById('graph') |
| 28 | var imgData, origImgData |
| 29 | var width, height |
| 30 | var userInfo = document.getElementById('user-info') |
| 31 | var userLink = document.getElementById('user-link') |
| 32 | var userIdText = document.getElementById('user-id').firstChild |
| 33 | var dayInfo = document.getElementById('day-info') |
| 34 | var dayText = document.getElementById('day').firstChild |
| 35 | var dayUsersText = document.getElementById('day-users').firstChild |
| 36 | |
| 37 | var colors = { |
| 38 | yellow: [255, 255, 0, 255], |
| 39 | red: [255, 0, 0, 255], |
| 40 | black: [0, 0, 0, 255], |
| 41 | grey: [200, 200, 200, 255], |
| 42 | bg: [255, 255, 255, 0], |
| 43 | highlight: [0, 0, 0, 255] |
| 44 | } |
| 45 | |
| 46 | function getJSON(url, cb) { |
| 47 | var req = new XMLHttpRequest() |
| 48 | req.open('GET', url, true) |
| 49 | req.onload = function () { |
| 50 | if (req.readyState !== 4) return |
| 51 | if (req.status >= 200 && req.status < 400) |
| 52 | cb(null, JSON.parse(req.responseText)) |
| 53 | else |
| 54 | return cb(req) |
| 55 | } |
| 56 | req.onerror = cb |
| 57 | req.send(null) |
| 58 | } |
| 59 | |
| 60 | function printError(err) { |
| 61 | var pre = document.createElement('pre') |
| 62 | document.body.appendChild(pre) |
| 63 | pre.appendChild(document.createTextNode(err.stack)) |
| 64 | } |
| 65 | |
| 66 | getJSON('ids.json', function (err, _ids) { |
| 67 | if (err) return printError(err) |
| 68 | ids = _ids |
| 69 | idColors = common.computeIdColors(ids) |
| 70 | for (var i = 0; i < ids.length; i++) { |
| 71 | var id = ids[i] |
| 72 | var color = idColors[id] |
| 73 | idsByColor[color] = id |
| 74 | } |
| 75 | }) |
| 76 | |
| 77 | var canvas = document.createElement('canvas') |
| 78 | var ctx |
| 79 | function onImageLoad() { |
| 80 | width = canvas.width = img.width |
| 81 | height = canvas.height = img.height |
| 82 | ctx = canvas.getContext('2d') |
| 83 | ctx.drawImage(img, 0, 0) |
| 84 | imgData = ctx.getImageData(0, 0, width, height) |
| 85 | origImgData = ctx.getImageData(0, 0, width, height) |
| 86 | img.parentNode.insertBefore(canvas, img) |
| 87 | img.parentNode.removeChild(img) |
| 88 | canvas.style.maxWidth = '100%' |
| 89 | } |
| 90 | if (img.complete) onImageLoad() |
| 91 | else img.onload = onImageLoad |
| 92 | |
| 93 | function getPoint(e) { |
| 94 | return [ |
| 95 | Math.floor(e.offsetX * width / canvas.offsetWidth), |
| 96 | Math.floor(e.offsetY * height / canvas.offsetHeight) |
| 97 | ] |
| 98 | } |
| 99 | |
| 100 | function colorEquals(a, b) { |
| 101 | return a && b |
| 102 | && a[3] === b[3] |
| 103 | && (a[3] === 0 || ( |
| 104 | a[0] === b[0] |
| 105 | && a[1] === b[1] |
| 106 | && a[2] === b[2] |
| 107 | )) |
| 108 | } |
| 109 | |
| 110 | function getPixel(x, y) { |
| 111 | var i = (y * width + x) << 2 |
| 112 | var data = origImgData.data |
| 113 | return [ |
| 114 | data[i], |
| 115 | data[i+1], |
| 116 | data[i+2], |
| 117 | data[i+3] |
| 118 | ] |
| 119 | } |
| 120 | |
| 121 | function setPixel(x, y, color) { |
| 122 | var i = (y * width + x) << 2 |
| 123 | var data = imgData.data |
| 124 | data[i] = color[0] |
| 125 | data[i+1] = color[1] |
| 126 | data[i+2] = color[2] |
| 127 | data[i+3] = 255 |
| 128 | } |
| 129 | |
| 130 | function replaceColor(oldColor, newColor) { |
| 131 | for (var x = 0; x < width; x++) { |
| 132 | for (var y = height-1; y > 0; y--) { |
| 133 | var c = getPixel(x, y) |
| 134 | if (colorEquals(c, colors.bg)) break |
| 135 | if (colorEquals(c, oldColor)) { |
| 136 | setPixel(x, y, newColor) |
| 137 | break |
| 138 | } |
| 139 | } |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | function highlightColumn(x, amount) { |
| 144 | for (var y = 0; y < height; y++) { |
| 145 | var p = getPixel(x, y) |
| 146 | if (p[3] === 0) p[0] = p[1] = p[2] = 255 |
| 147 | setPixel(x, y, common.interpolate(p, colors.grey, amount)) |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | function pointEquals(a, b) { |
| 152 | return a ? b && a[0] === b[0] && a[1] === b[1] : !b |
| 153 | } |
| 154 | |
| 155 | function dayStr(day) { |
| 156 | return isNaN(day) ? '' : |
| 157 | new Date(common.startTime + day * 86400000).toDateString() |
| 158 | } |
| 159 | |
| 160 | var usersAtInterval = {} |
| 161 | function countUsersAtInterval(x) { |
| 162 | var count = usersAtInterval[x] |
| 163 | if (typeof count !== 'undefined') return count |
| 164 | count = 0 |
| 165 | for (var y = height-1; y > 0; y--) { |
| 166 | var color = getPixel(x, y) |
| 167 | if (colorEquals(color, colors.bg)) break |
| 168 | count++ |
| 169 | } |
| 170 | return usersAtInterval[x] = count |
| 171 | } |
| 172 | |
| 173 | var hoverColor, hoverPoint |
| 174 | var clickedColor, clickedPoint |
| 175 | |
| 176 | function highlight(point) { |
| 177 | if (pointEquals(point, hoverPoint)) return |
| 178 | if (hoverPoint) highlightColumn(hoverPoint[0], 0) |
| 179 | if (point) highlightColumn(point[0], 0.7) |
| 180 | hoverPoint = point |
| 181 | |
| 182 | var color = point && getPixel(point[0], point[1]) |
| 183 | if (colorEquals(color, colors.bg)) { |
| 184 | if (hoverColor) replaceColor(hoverColor, hoverColor) |
| 185 | hoverColor = null |
| 186 | userInfo.style.visibility = 'hidden' |
| 187 | dayInfo.style.visibility = 'hidden' |
| 188 | } else if (!colorEquals(color, hoverColor)) { |
| 189 | if (hoverColor) replaceColor(hoverColor, hoverColor) |
| 190 | replaceColor(color, colors.highlight) |
| 191 | hoverColor = color |
| 192 | } |
| 193 | |
| 194 | if (!point) { |
| 195 | dayInfo.style.visibility = 'hidden' |
| 196 | } else { |
| 197 | dayInfo.style.visibility = 'visible' |
| 198 | dayText.nodeValue = dayStr(point[0]) |
| 199 | dayUsersText.nodeValue = countUsersAtInterval(point[0]) |
| 200 | } |
| 201 | |
| 202 | var id = idsByColor[color] |
| 203 | if (!id) { |
| 204 | userInfo.style.visibility = 'hidden' |
| 205 | } else { |
| 206 | userIdText.nodeValue = id |
| 207 | userLink.href = feedBase + encodeURIComponent(id) |
| 208 | userInfo.style.visibility = 'visible' |
| 209 | } |
| 210 | |
| 211 | ctx.putImageData(imgData, 0, 0) |
| 212 | } |
| 213 | |
| 214 | canvas.addEventListener('mousemove', function (e) { |
| 215 | highlight(getPoint(e)) |
| 216 | }, false) |
| 217 | |
| 218 | canvas.addEventListener('mousedown', function (e) { |
| 219 | var point = getPoint(e) |
| 220 | if (pointEquals(point, clickedPoint)) return |
| 221 | var color |
| 222 | if (point) { |
| 223 | color = getPixel(point[0], point[1]) |
| 224 | if (colorEquals(color, colors.bg)) { |
| 225 | color = null |
| 226 | point = null |
| 227 | } |
| 228 | } |
| 229 | clickedPoint = point |
| 230 | clickedColor = color |
| 231 | highlight(point) |
| 232 | }, false) |
| 233 | |
| 234 | canvas.addEventListener('mouseout', function (e) { |
| 235 | highlight(clickedPoint) |
| 236 | }, false) |
| 237 | |
| 238 | </script> |
| 239 | </body> |
| 240 | </html> |
| 241 |
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