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Can generate random itentiy image

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Pierre 2018-05-12 09:51:25 +02:00
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2
README.md
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@ -21,3 +21,5 @@ ComunicWeb would not exists without the following technologies developped by the
- jquery.hotkeys
- bootstrap-wysiwyg (https://github.com/steveathon/bootstrap-wysiwyg/)
- wdt-emoji-bundle (http://ned.im/wdt-emoji-bundle)
- PNGLib (http://www.xarg.org/2010/03/generate-client-side-png-files-using-javascript/) (BSD Licence)
- Identicon (http://github.com/stewartlord/identicon.js) (BSD Licence)

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Copyright (c) 2018, Stewart Lord
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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identicon.js
============
![Screenshot](/screenshot.png)
[![CDNJS version](https://img.shields.io/cdnjs/v/identicon.js.svg)](https://cdnjs.com/libraries/identicon.js)
GitHub-style identicons as PNGs or SVGs in JS.
This little library will produce the same shape and (nearly) the same color as GitHub when given the same hash value. Supports PNG and SVG output formats. Note that GitHub uses an internal database identifier for the hash, so you can't simply md5 the username and get the same result. The creative visual design is borrowed from [Jason Long](http://twitter.com/jasonlong) of Git and GitHub fame.
Demo
----
[View Demo](https://rawgithub.com/stewartlord/identicon.js/master/demo.html)
Installation
-----
```
npm install identicon.js --save
```
[![NPM Stats](https://nodei.co/npm/identicon.js.png?downloads=true)](https://npmjs.org/package/identicon.js)
Options
----
* **hash** - A hexadecimal string of 15+ characters that will be used to generate the image.
* **options** - [Optional] An options object used to customize the generated image.
* **size** - The size in pixels of the height and width of the generated (square) image. Defaults to 64 pixels.
* **margin** - The decimal fraction of the size to use for margin. For example, use 0.2 for a 20% margin. Defaults to 0.08 for an 8% margin.
* **foreground** - The foreground color is automatically derived from the hash value. Use this option to override that behavior and provide a rgba value array instead (e.g. [255,0,0,255] for red).
* **background** - The background color expressed as an rgba value array to use for the image background. For example, use [255,0,0,255] for red. Defaults to an opaque light gray [240,240,240,255].
* **saturation** - The saturation of the derived foreground color as a value from 0-1. Defaults to 0.7.
* **brightness** - The brightness of the derived foreground color as a value from 0-1. Defaults to 0.5.
Usage
-----
##### Simple
Generate the Identicon by supplying a hash string and size.
```js
// create a base64 encoded PNG
var data = new Identicon('d3b07384d113edec49eaa6238ad5ff00', 420).toString();
// write to a data URI
document.write('<img width=420 height=420 src="data:image/png;base64,' + data + '">');
```
##### Advanced
To customize additional properties, generate the Identicon by supplying a hexadecimal string and an options object.
```js
// set up options
var hash = "c157a79031e1c40f85931829bc5fc552"; // 15+ hex chars
var options = {
foreground: [0, 0, 0, 255], // rgba black
background: [255, 255, 255, 255], // rgba white
margin: 0.2, // 20% margin
size: 420, // 420px square
format: 'svg' // use SVG instead of PNG
};
// create a base64 encoded SVG
var data = new Identicon(hash, options).toString();
// write to a data URI
document.write('<img width=420 height=420 src="data:image/svg+xml;base64,' + data + '">');
```
[PNG output requires PNGLib](http://www.xarg.org/download/pnglib.js)
Copyright 2018, [Stewart Lord](https://github.com/stewartlord)
Released under the [BSD license](http://www.opensource.org/licenses/bsd-license.php)

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/**
* Identicon.js 2.3.2
* http://github.com/stewartlord/identicon.js
*
* PNGLib required for PNG output
* http://www.xarg.org/download/pnglib.js
*
* Copyright 2018, Stewart Lord
* Released under the BSD license
* http://www.opensource.org/licenses/bsd-license.php
*/
(function() {
var PNGlib;
if (typeof module !== 'undefined' && typeof module.exports !== 'undefined') {
PNGlib = require('./pnglib');
} else {
PNGlib = window.PNGlib;
}
var Identicon = function(hash, options){
if (typeof(hash) !== 'string' || hash.length < 15) {
throw 'A hash of at least 15 characters is required.';
}
this.defaults = {
background: [240, 240, 240, 255],
margin: 0.08,
size: 64,
saturation: 0.7,
brightness: 0.5,
format: 'png'
};
this.options = typeof(options) === 'object' ? options : this.defaults;
// backward compatibility with old constructor (hash, size, margin)
if (typeof(arguments[1]) === 'number') { this.options.size = arguments[1]; }
if (arguments[2]) { this.options.margin = arguments[2]; }
this.hash = hash
this.background = this.options.background || this.defaults.background;
this.size = this.options.size || this.defaults.size;
this.format = this.options.format || this.defaults.format;
this.margin = this.options.margin !== undefined ? this.options.margin : this.defaults.margin;
// foreground defaults to last 7 chars as hue at 70% saturation, 50% brightness
var hue = parseInt(this.hash.substr(-7), 16) / 0xfffffff;
var saturation = this.options.saturation || this.defaults.saturation;
var brightness = this.options.brightness || this.defaults.brightness;
this.foreground = this.options.foreground || this.hsl2rgb(hue, saturation, brightness);
};
Identicon.prototype = {
background: null,
foreground: null,
hash: null,
margin: null,
size: null,
format: null,
image: function(){
return this.isSvg()
? new Svg(this.size, this.foreground, this.background)
: new PNGlib(this.size, this.size, 256);
},
render: function(){
var image = this.image(),
size = this.size,
baseMargin = Math.floor(size * this.margin),
cell = Math.floor((size - (baseMargin * 2)) / 5),
margin = Math.floor((size - cell * 5) / 2),
bg = image.color.apply(image, this.background),
fg = image.color.apply(image, this.foreground);
// the first 15 characters of the hash control the pixels (even/odd)
// they are drawn down the middle first, then mirrored outwards
var i, color;
for (i = 0; i < 15; i++) {
color = parseInt(this.hash.charAt(i), 16) % 2 ? bg : fg;
if (i < 5) {
this.rectangle(2 * cell + margin, i * cell + margin, cell, cell, color, image);
} else if (i < 10) {
this.rectangle(1 * cell + margin, (i - 5) * cell + margin, cell, cell, color, image);
this.rectangle(3 * cell + margin, (i - 5) * cell + margin, cell, cell, color, image);
} else if (i < 15) {
this.rectangle(0 * cell + margin, (i - 10) * cell + margin, cell, cell, color, image);
this.rectangle(4 * cell + margin, (i - 10) * cell + margin, cell, cell, color, image);
}
}
return image;
},
rectangle: function(x, y, w, h, color, image){
if (this.isSvg()) {
image.rectangles.push({x: x, y: y, w: w, h: h, color: color});
} else {
var i, j;
for (i = x; i < x + w; i++) {
for (j = y; j < y + h; j++) {
image.buffer[image.index(i, j)] = color;
}
}
}
},
// adapted from: https://gist.github.com/aemkei/1325937
hsl2rgb: function(h, s, b){
h *= 6;
s = [
b += s *= b < .5 ? b : 1 - b,
b - h % 1 * s * 2,
b -= s *= 2,
b,
b + h % 1 * s,
b + s
];
return[
s[ ~~h % 6 ] * 255, // red
s[ (h|16) % 6 ] * 255, // green
s[ (h|8) % 6 ] * 255 // blue
];
},
toString: function(raw){
// backward compatibility with old toString, default to base64
if (raw) {
return this.render().getDump();
} else {
return this.render().getBase64();
}
},
isSvg: function(){
return this.format.match(/svg/i)
}
};
var Svg = function(size, foreground, background){
this.size = size;
this.foreground = this.color.apply(this, foreground);
this.background = this.color.apply(this, background);
this.rectangles = [];
};
Svg.prototype = {
size: null,
foreground: null,
background: null,
rectangles: null,
color: function(r, g, b, a){
var values = [r, g, b].map(Math.round);
values.push((a >= 0) && (a <= 255) ? a/255 : 1);
return 'rgba(' + values.join(',') + ')';
},
getDump: function(){
var i,
xml,
rect,
fg = this.foreground,
bg = this.background,
stroke = this.size * 0.005;
xml = "<svg xmlns='http://www.w3.org/2000/svg'"
+ " width='" + this.size + "' height='" + this.size + "'"
+ " style='background-color:" + bg + ";'>"
+ "<g style='fill:" + fg + "; stroke:" + fg + "; stroke-width:" + stroke + ";'>";
for (i = 0; i < this.rectangles.length; i++) {
rect = this.rectangles[i];
if (rect.color == bg) continue;
xml += "<rect "
+ " x='" + rect.x + "'"
+ " y='" + rect.y + "'"
+ " width='" + rect.w + "'"
+ " height='" + rect.h + "'"
+ "/>";
}
xml += "</g></svg>"
return xml;
},
getBase64: function(){
if (btoa) {
return btoa(this.getDump());
} else if (Buffer) {
return new Buffer(this.getDump(), 'binary').toString('base64');
} else {
throw 'Cannot generate base64 output';
}
}
};
if (typeof module !== 'undefined' && typeof module.exports !== 'undefined') {
module.exports = Identicon;
} else {
window.Identicon = Identicon;
}
})();

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{
"name": "identicon.js",
"version": "2.3.2",
"description": "GitHub-style identicons as PNGs or SVGs in JS.",
"main": "identicon.js",
"repository": {
"type": "git",
"url": "https://github.com/stewartlord/identicon.js"
},
"keywords": [
"identicon"
],
"author": "stewardlord",
"license": "BSD",
"bugs": {
"url": "https://github.com/stewartlord/identicon.js/issues"
},
"homepage": "https://github.com/stewartlord/identicon.js"
}

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assets/3rdparty/identicon.js/pnglib.js vendored Normal file
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/**
* A handy class to calculate color values.
*
* @version 1.0
* @author Robert Eisele <robert@xarg.org>
* @copyright Copyright (c) 2010, Robert Eisele
* @link http://www.xarg.org/2010/03/generate-client-side-png-files-using-javascript/
* @license http://www.opensource.org/licenses/bsd-license.php BSD License
*
*/
(function() {
// helper functions for that ctx
function write(buffer, offs) {
for (var i = 2; i < arguments.length; i++) {
for (var j = 0; j < arguments[i].length; j++) {
buffer[offs++] = arguments[i].charAt(j);
}
}
}
function byte2(w) {
return String.fromCharCode((w >> 8) & 255, w & 255);
}
function byte4(w) {
return String.fromCharCode((w >> 24) & 255, (w >> 16) & 255, (w >> 8) & 255, w & 255);
}
function byte2lsb(w) {
return String.fromCharCode(w & 255, (w >> 8) & 255);
}
// modified from original source to support NPM
var PNGlib = function(width,height,depth) {
this.width = width;
this.height = height;
this.depth = depth;
// pixel data and row filter identifier size
this.pix_size = height * (width + 1);
// deflate header, pix_size, block headers, adler32 checksum
this.data_size = 2 + this.pix_size + 5 * Math.floor((0xfffe + this.pix_size) / 0xffff) + 4;
// offsets and sizes of Png chunks
this.ihdr_offs = 0; // IHDR offset and size
this.ihdr_size = 4 + 4 + 13 + 4;
this.plte_offs = this.ihdr_offs + this.ihdr_size; // PLTE offset and size
this.plte_size = 4 + 4 + 3 * depth + 4;
this.trns_offs = this.plte_offs + this.plte_size; // tRNS offset and size
this.trns_size = 4 + 4 + depth + 4;
this.idat_offs = this.trns_offs + this.trns_size; // IDAT offset and size
this.idat_size = 4 + 4 + this.data_size + 4;
this.iend_offs = this.idat_offs + this.idat_size; // IEND offset and size
this.iend_size = 4 + 4 + 4;
this.buffer_size = this.iend_offs + this.iend_size; // total PNG size
this.buffer = new Array();
this.palette = new Object();
this.pindex = 0;
var _crc32 = new Array();
// initialize buffer with zero bytes
for (var i = 0; i < this.buffer_size; i++) {
this.buffer[i] = "\x00";
}
// initialize non-zero elements
write(this.buffer, this.ihdr_offs, byte4(this.ihdr_size - 12), 'IHDR', byte4(width), byte4(height), "\x08\x03");
write(this.buffer, this.plte_offs, byte4(this.plte_size - 12), 'PLTE');
write(this.buffer, this.trns_offs, byte4(this.trns_size - 12), 'tRNS');
write(this.buffer, this.idat_offs, byte4(this.idat_size - 12), 'IDAT');
write(this.buffer, this.iend_offs, byte4(this.iend_size - 12), 'IEND');
// initialize deflate header
var header = ((8 + (7 << 4)) << 8) | (3 << 6);
header+= 31 - (header % 31);
write(this.buffer, this.idat_offs + 8, byte2(header));
// initialize deflate block headers
for (var i = 0; (i << 16) - 1 < this.pix_size; i++) {
var size, bits;
if (i + 0xffff < this.pix_size) {
size = 0xffff;
bits = "\x00";
} else {
size = this.pix_size - (i << 16) - i;
bits = "\x01";
}
write(this.buffer, this.idat_offs + 8 + 2 + (i << 16) + (i << 2), bits, byte2lsb(size), byte2lsb(~size));
}
/* Create crc32 lookup table */
for (var i = 0; i < 256; i++) {
var c = i;
for (var j = 0; j < 8; j++) {
if (c & 1) {
c = -306674912 ^ ((c >> 1) & 0x7fffffff);
} else {
c = (c >> 1) & 0x7fffffff;
}
}
_crc32[i] = c;
}
// compute the index into a png for a given pixel
this.index = function(x,y) {
var i = y * (this.width + 1) + x + 1;
var j = this.idat_offs + 8 + 2 + 5 * Math.floor((i / 0xffff) + 1) + i;
return j;
}
// convert a color and build up the palette
this.color = function(red, green, blue, alpha) {
alpha = alpha >= 0 ? alpha : 255;
var color = (((((alpha << 8) | red) << 8) | green) << 8) | blue;
if (typeof this.palette[color] == "undefined") {
if (this.pindex == this.depth) return "\x00";
var ndx = this.plte_offs + 8 + 3 * this.pindex;
this.buffer[ndx + 0] = String.fromCharCode(red);
this.buffer[ndx + 1] = String.fromCharCode(green);
this.buffer[ndx + 2] = String.fromCharCode(blue);
this.buffer[this.trns_offs+8+this.pindex] = String.fromCharCode(alpha);
this.palette[color] = String.fromCharCode(this.pindex++);
}
return this.palette[color];
}
// output a PNG string, Base64 encoded
this.getBase64 = function() {
var s = this.getDump();
var ch = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
var c1, c2, c3, e1, e2, e3, e4;
var l = s.length;
var i = 0;
var r = "";
do {
c1 = s.charCodeAt(i);
e1 = c1 >> 2;
c2 = s.charCodeAt(i+1);
e2 = ((c1 & 3) << 4) | (c2 >> 4);
c3 = s.charCodeAt(i+2);
if (l < i+2) { e3 = 64; } else { e3 = ((c2 & 0xf) << 2) | (c3 >> 6); }
if (l < i+3) { e4 = 64; } else { e4 = c3 & 0x3f; }
r+= ch.charAt(e1) + ch.charAt(e2) + ch.charAt(e3) + ch.charAt(e4);
} while ((i+= 3) < l);
return r;
}
// output a PNG string
this.getDump = function() {
// compute adler32 of output pixels + row filter bytes
var BASE = 65521; /* largest prime smaller than 65536 */
var NMAX = 5552; /* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */
var s1 = 1;
var s2 = 0;
var n = NMAX;
for (var y = 0; y < this.height; y++) {
for (var x = -1; x < this.width; x++) {
s1+= this.buffer[this.index(x, y)].charCodeAt(0);
s2+= s1;
if ((n-= 1) == 0) {
s1%= BASE;
s2%= BASE;
n = NMAX;
}
}
}
s1%= BASE;
s2%= BASE;
write(this.buffer, this.idat_offs + this.idat_size - 8, byte4((s2 << 16) | s1));
// compute crc32 of the PNG chunks
function crc32(png, offs, size) {
var crc = -1;
for (var i = 4; i < size-4; i += 1) {
crc = _crc32[(crc ^ png[offs+i].charCodeAt(0)) & 0xff] ^ ((crc >> 8) & 0x00ffffff);
}
write(png, offs+size-4, byte4(crc ^ -1));
}
crc32(this.buffer, this.ihdr_offs, this.ihdr_size);
crc32(this.buffer, this.plte_offs, this.plte_size);
crc32(this.buffer, this.trns_offs, this.trns_size);
crc32(this.buffer, this.idat_offs, this.idat_size);
crc32(this.buffer, this.iend_offs, this.iend_size);
// convert PNG to string
return "\x89PNG\r\n\x1a\n"+this.buffer.join('');
}
}
// modified from original source to support NPM
if (typeof module !== 'undefined' && typeof module.exports !== 'undefined') {
module.exports = PNGlib;
} else {
window.PNGlib = PNGlib;
}
})();

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assets/js/common/utils.js
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@ -508,3 +508,38 @@ window.location.changed = function(e){};
}
})(jQuery);
/**
* Generate a new random string
*
* @param {number} length The length of the string ot generate
* @return {string} Generated string
*/
function random_string(length){
var text = "";
var possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrst0123456789";
for(var i = 0; i < length; i++)
text += possible.charAt(Math.random() * possible.length);
return text;
}
/**
* Generate and return a new random identity image
*
* @return {string} Base64 - encoded new identity image
*/
function generateIdentImage() {
var hash = random_string(32);
var color = Math.random() * 240;
var color2 = Math.random() * 240;
var color3 = Math.random() * 240;
var options = {
foreground: [color, color2, color3, 255],
size: 130,
format: 'png'
};
return new Identicon(hash, options).toString();
}

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system/config/dev.config.php
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@ -127,6 +127,10 @@ class Dev {
//Emoji picker
"3rdparty/wdt-emoji/emoji.min.js",
"3rdparty/wdt-emoji/wdt-emoji-bundle.js",
//Identicon.JS
"3rdparty/identicon.js/pnglib.js",
"3rdparty/identicon.js/identicon.js",
);
/**