re2o/static/js/sapphire.js

// Re2o est un logiciel d'administration développé initiallement au rezometz. Il
// se veut agnostique au réseau considéré, de manière à être installable en
// quelques clics.
//
// Copyright © 2017  Maël Kervella
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

// General options
//=====================================
// Times the canvas is refreshed a second
var FPS = 30;
// Determine the length of the trail (0=instant disappear, maximum=window.innerHeight=no disappear)
var TRAIL_TIME = 5;
// The color of the characters
var RAIN_COLOR = "#00F";
// The characters displayed
var CHARACTERS = "田由甲申甴电甶男甸甹町画甼甽甾甿畀畁畂畃畄畅畆畇畈畉畊畋界畍畎畏畐畑".split("");
// The font size used to display the characters
var FONT_SIZE = 10;
// The maximum number of characters displayed by column
var MAX_CHAR = 7;

var Sapphire = function () {
    var sapphire = {
        triggerHandle: undefined,
        activated:     false,
        runOnce:       false,

        getClass: function(elt, main, name) { elt.obj = main.getElementsByClassName(name); },
        getTag:   function(elt, main, name) { elt.obj = main.getElementsByTagName(name); },

        getProp: function(elt) {
            for (var i=0 ; i<elt.obj.length ; i++) {
                for (var p in elt.prop) {
                    if ( p === "color" ) { elt.prop[p][i] = elt.obj[i].style.color; }
                    else if ( p === "bgColor" ) { elt.prop[p][i] = elt.obj[i].style.backgroundColor; }
                    else if ( p === "display" ) { elt.prop[p][i] = elt.obj[i].style.display; }
                }
            }
        },
        alterProp: function(elt) {
            for (var i=0 ; i<elt.obj.length ; i++) {
                for (var p in elt.prop) {
                    if ( p === "color" ) { elt.obj[i].style.color = "white"; }
                    else if ( p === "bgColor" ) { elt.obj[i].style.backgroundColor = "transparent"; }
                    else if ( p === "display" ) { elt.obj[i].style.display = "none"; }
                }
            }
        },
        revertProp: function(elt) {
            for (var i=0 ; i<elt.obj.length ; i++) {
                for (var p in elt.prop) {
                    if ( p === "color" ) { elt.obj[i].style.color = elt.prop[p][i]; }
                    else if ( p === "bgColor" ) { elt.obj[i].style.backgroundColor = elt.prop[p][i]; }
                    else if ( p === "display" ) { elt.obj[i].style.display = elt.prop[p][i]; }
                }
            }
        },

        elts: {
            alerts: {
                obj:    undefined,
                prop:   {bgColor: []},
                get:    function(main) { sapphire.getClass(this, main, "alert"); sapphire.getProp(this); },
                alter:  function()     { sapphire.alterProp(this); },
                revert: function()     { sapphire.revertProp(this); }
            },
            btns: {
                obj:    undefined,
                prop:   {color: [], bgColor: []},
                get:    function(main) { sapphire.getClass(this, main, "btn"); sapphire.getProp(this); },
                alter:  function()     { sapphire.alterProp(this); },
                revert: function()     { sapphire.revertProp(this); }
            },
            body: {
                obj:    undefined,
                prop:   {color: []},
                get:    function(main) {
                    this.obj = document.body;
                    for (var p in this.prop) { if ( p === "color" ) { this.prop[p] = this.obj.style.color; } }
                },
                alter:  function() { for (var p in this.prop) { if ( p === "color" ) { this.obj.style.color = "white"; } } },
                revert: function() { for (var p in this.prop) { if ( p === "color" ) { this.obj.style.color = this.prop[p]; } } }
            },
            captions: {
                obj:    undefined,
                prop:   {color: []},
                get:    function(main) { sapphire.getClass(this, main, "caption"); sapphire.getProp(this); },
                alter:  function()     { sapphire.alterProp(this); },
                revert: function()     { sapphire.revertProp(this); }
            },
            helps: {
                obj:    undefined,
                prop:   {color: []},
                get:    function(main) { sapphire.getClass(this, main, "help-block"); sapphire.getProp(this); },
                alter:  function()     { sapphire.alterProp(this); },
                revert: function()     { sapphire.revertProp(this); }
            },
            hrs: {
                obj:    undefined,
                prop:   {display: []},
                get:    function(main) { sapphire.getTag(this, main, "hr"); sapphire.getProp(this); },
                alter:  function()     { sapphire.alterProp(this); },
                revert: function()     { sapphire.revertProp(this); }
            },
            inputs: {
                obj:    undefined,
                prop:   {color: [], bgColor: []},
                get:    function(main) { sapphire.getTag(this, main, "input"); sapphire.getProp(this); },
                alter:  function()     { sapphire.alterProp(this); },
                revert: function()     { sapphire.revertProp(this); }
            },
            listGroups: {
                obj:    undefined,
                prop:   {color: [], bgColor: []},
                get:    function(main) { sapphire.getClass(this, main, "list-group-item"); sapphire.getProp(this); },
                alter:  function()     { sapphire.alterProp(this); },
                revert: function()     { sapphire.revertProp(this); }
            },
            paginations: {
                obj:    [],
                prop:   {bgColor: []},
                get:    function(main) {
                    var a = main.getElementsByClassName("pagination");
                    for (var i=0 ; i<a.length ; i++) {
                        this.obj[i] = []; this.prop.bgColor[i] = [];
                        for (var j=0 ; j<a[i].children.length ; j++) {
                            this.obj[i][j] = a[i].children[j].children[0];
                            this.prop.bgColor[i][j] = this.obj[i][j].style.backgroundColor;
                        }
                    }
                },
                alter:  function () {
                    for (var i=0 ; i<this.obj.length ; i++)
                        for (var j=0 ; j<this.obj[i].length ; j++)
                            for (var p in this.prop)
                                if ( p === "bgColor" ) { this.obj[i][j].style.backgroundColor = "transparent"; }
                },
                revert: function() {
                    for (var i=0 ; i<this.obj.length ; i++)
                        for (var j=0 ; j<this.obj[i].length ; j++)
                            for (var p in this.prop)
                                if ( p === "bgColor" ) { this.obj[i][j].style.backgroundColor = this.prop[p][i][j]; }
                }
            },
            panelHeadings: {
                obj:    undefined,
                prop:   {bgColor: [], color: []},
                get:    function(main) { sapphire.getClass(this, main, "panel-heading"); sapphire.getProp(this); },
                alter:  function()     { sapphire.alterProp(this); },
                revert: function()     { sapphire.revertProp(this); }
            },
            panels: {
                obj:    undefined,
                prop:   {bgColor: []},
                get:    function(main) { sapphire.getClass(this, main, "panel"); sapphire.getProp(this); },
                alter:  function()     { sapphire.alterProp(this); },
                revert: function()     { sapphire.revertProp(this); }
            },
            selects: {
                obj:    undefined,
                prop:   {color: [], bgColor: []},
                get:    function(main) { sapphire.getTag(this, main, "select"); sapphire.getProp(this); },
                alter:  function()     { sapphire.alterProp(this); },
                revert: function()     { sapphire.revertProp(this); }
            },
            sidenavs: {
                obj:    undefined,
                prop:   {bgColor: []},
                get:    function(main) { sapphire.getClass(this, main, "sidenav"); sapphire.getProp(this); },
                alter:  function()     { sapphire.alterProp(this); },
                revert: function()     { sapphire.revertProp(this); }
            },
            tds: {
                obj:    undefined,
                prop:   {bgColor: []},
                get:    function(main) { sapphire.getTag(this, main, "td"); sapphire.getProp(this); },
                alter:  function()     { sapphire.alterProp(this); },
                revert: function()     { sapphire.revertProp(this); }
            },
            thumbnails: {
                obj:    undefined,
                prop:   {bgColor: []},
                get:    function(main) { sapphire.getClass(this, main, "thumbnail"); sapphire.getProp(this); },
                alter:  function()     { sapphire.alterProp(this); },
                revert: function()     { sapphire.revertProp(this); }
            },
            trs: {
                obj:    undefined,
                prop:   {bgColor: []},
                get:    function(main) { sapphire.getTag(this, main, "tr"); sapphire.getProp(this); },
                alter:  function()     { sapphire.alterProp(this); },
                revert: function()     { sapphire.revertProp(this); }
            }
        },

        canvas: undefined,

        init: function() {
            var main = document.getElementById("main");
            for (var e in sapphire.elts) { sapphire.elts[e].get(main); }
        },

        run: function() {
            sapphire.canvas = document.createElement("canvas");
            document.body.appendChild(sapphire.canvas);
            sapphire.canvas.width = window.innerWidth;
            sapphire.canvas.height = window.innerHeight;
            sapphire.canvas.style.position = "fixed";
            sapphire.canvas.style.zIndex = -1;
            sapphire.canvas.style.left = 0;
            sapphire.canvas.style.top = 0;

            var ctx = sapphire.canvas.getContext("2d");

            var columns = sapphire.canvas.width/FONT_SIZE;
            var alpha = Math.max( 0, Math.min( 1, TRAIL_TIME / ( sapphire.canvas.height/FONT_SIZE ) ) );
            var drops = [];
            for(var x = 0; x < columns; x++)
            {
                drops[x] = [];
                var nb = Math.floor(Math.random()*MAX_CHAR);
                for (var y = 0; y < nb; y++)
                    drops[x][y] = 1;
            }

            function attenuateBackground() {
                ctx.fillStyle = "rgba(0, 0, 0, "+alpha+")";
                ctx.fillRect(0, 0, sapphire.canvas.width, sapphire.canvas.height);
            }

            function drawMatrixRainDrop() {
                ctx.fillStyle = RAIN_COLOR;
                ctx.font = FONT_SIZE + "px arial";
                for(var i = 0; i < drops.length; i++) {
                    for (var j = 0; j < drops[i].length; j++) {
                        var text = CHARACTERS[Math.floor(Math.random()*CHARACTERS.length)];
                        ctx.fillText(text, i*FONT_SIZE, drops[i][j]*FONT_SIZE);
                        if(drops[i][j]*FONT_SIZE > sapphire.canvas.height && Math.random() > 0.975)
                            drops[i][j] = 0;
                        drops[i][j]++;
                    }
                }
            }

            function drawEverything() {
                attenuateBackground();
                drawMatrixRainDrop();
            }

            sapphire.triggerHandle = setInterval(drawEverything, 1000/FPS);
        },
        stop: function() {
            sapphire.canvas.parentNode.removeChild(sapphire.canvas);
            clearInterval(sapphire.triggerHandle);
        },

        alterElts:  function() { for (var e in sapphire.elts) { sapphire.elts[e].alter(main); } },
        revertElts: function() { for (var e in sapphire.elts) { sapphire.elts[e].revert(main); } },

        activate:   function() {
            if (!sapphire.runOnce) {
                sapphire.runOnce = true;
                sapphire.init();
            }
            if (!sapphire.activated) {
                sapphire.activated = true;
                sapphire.alterElts();
                sapphire.run()
            }
            else {
                sapphire.activated = false;
                sapphire.stop();
                sapphire.revertElts();
            }
        }
    }

    return sapphire;
}

var s = Sapphire();
Konami(s.activate);