js/ui/colour.js

   1 qwebirc.ui.Colourise = function(line, entity, execfn, cmdfn, window) {
   2   var fg;
   3   var bg;
   4   var underline = false;
   5   var bold = false;
   6   var autoNickColour = false;
   7
   8   var out = [];
   9   var xline = line.split("");
  10   var element = document.createElement("span");
  11
  12   entity.addClass("colourline");
  13
  14   function isNum(x) {
  15     return x >= '0' && x <= '9';
  16   }
  17
  18   function parseColours(xline, i) {
  19     if(!isNum(xline[i + 1])) {
  20       fg = undefined;
  21       bg = undefined;
  22       return i;
  23     }
  24     i++;
  25     if(isNum(xline[i + 1])) {
  26       fg = parseInt(xline[i] + xline[i + 1]);
  27       i++;
  28     } else {
  29       fg = parseInt(xline[i]);
  30     }
  31     if(xline[i + 1] != ",")
  32       return i;
  33     if(!isNum(xline[i + 2]))
  34       return i;
  35     i+=2;
  36
  37     if(isNum(xline[i + 1])) {
  38       bg = parseInt(xline[i] + xline[i + 1]);
  39       i++;
  40     } else {
  41       bg = parseInt(xline[i]);
  42     }
  43     return i;
  44   }
  45
  46   function emitEndToken() {
  47     var data = "";
  48     if(out.length > 0) {
  49       var data = qwebirc.ui.urlificate(element, out.join(""), execfn, cmdfn, window);
  50       entity.appendChild(element);
  51       out = [];
  52     }
  53     element = document.createElement("span");
  54     return data;
  55   }
  56
  57   function emitStartToken() {
  58     if(autoNickColour)
  59       return element;
  60
  61     var classes = []
  62     if(fg != undefined)
  63       classes.push("Xc" + fg);
  64     if(bg != undefined)
  65       classes.push("Xbc" + bg);
  66     if(bold)
  67       classes.push("Xb");
  68     if(underline)
  69       classes.push("Xu");
  70     element.className = classes.join(" ");
  71   }
  72
  73   var nickColouring = window.parentObject.uiOptions.NICK_COLOURS; /* HACK */
  74   var capturingNick = false;
  75   for(var i=0;i<xline.length;i++) {
  76     var lc = xline[i];
  77
  78     if(nickColouring) {
  79       if(!capturingNick) {
  80         if(lc == "\x00") {
  81           capturingNick = true;
  82           emitEndToken();
  83           continue;
  84         }
  85       } else {
  86         if(lc != "\x00") {
  87           out.push(lc);
  88         } else {
  89           autoNickColour = true;
  90           var e = emitStartToken();
  91           var text = emitEndToken();
  92
  93           var c = text.toHSBColour(window.client);
  94           if($defined(c))
  95             e.style.color = c.rgbToHex();
  96           capturingNick = autoNickColour = false;
  97         }
  98         continue;
  99       }
 100     } else if(lc == "\x00") {
 101       continue;
 102     }
 103
 104     if(lc == "\x02") {
 105       emitEndToken();
 106
 107       bold = !bold;
 108
 109       emitStartToken();
 110     } else if(lc == "\x1F") {
 111       emitEndToken();
 112
 113       underline = !underline;
 114
 115       emitStartToken();
 116     } else if(lc == "\x0F") {
 117       emitEndToken();
 118
 119       fg = undefined;
 120       bg = undefined;
 121       underline = false;
 122       bold = false;
 123     } else if(lc == "\x03") {
 124       emitEndToken();
 125
 126       i = parseColours(xline, i);
 127       if(bg > 15)
 128         bg = undefined;
 129       if(fg > 15)
 130         fg = undefined;
 131
 132       emitStartToken();
 133     } else {
 134       out.push(lc);
 135     }
 136   }
 137
 138   emitEndToken();
 139 }
 140
 141 String.prototype.toHSBColour = function(client) {
 142   var lower = client.toIRCLower(client.stripPrefix(this));
 143   if(lower == client.lowerNickname)
 144     return null;
 145
 146   var hash = 0;
 147   for(var i=0;i<lower.length;i++)
 148     hash = 31 * hash + lower.charCodeAt(i);
 149
 150   var hue = Math.abs(hash) % 360;
 151
 152   return new Color([hue, 70, 60], "hsb");
 153 }