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 o = out.join("");
  50       if (execfn) {
  51         qwebirc.ui.urlificate(element, o, execfn, cmdfn, window);
  52       } else {
  53         element.appendChild(document.createTextNode(o));
  54       }
  55       entity.appendChild(element);
  56       out = [];
  57     }
  58     element = document.createElement("span");
  59     return data;
  60   }
  61
  62   function emitStartToken() {
  63     if(autoNickColour)
  64       return element;
  65
  66     var classes = []
  67     if(fg != undefined)
  68       classes.push("Xc" + fg);
  69     if(bg != undefined)
  70       classes.push("Xbc" + bg);
  71     if(bold)
  72       classes.push("Xb");
  73     if(underline)
  74       classes.push("Xu");
  75     element.className = classes.join(" ");
  76   }
  77
  78   var nickColouring = window.parentObject.uiOptions.NICK_COLOURS; /* HACK */
  79   var capturingNick = false;
  80   for(var i=0;i<xline.length;i++) {
  81     var lc = xline[i];
  82
  83     if(nickColouring) {
  84       if(!capturingNick) {
  85         if(lc == "\x00") {
  86           capturingNick = true;
  87           emitEndToken();
  88           continue;
  89         }
  90       } else {
  91         if(lc != "\x00") {
  92           out.push(lc);
  93         } else {
  94           autoNickColour = true;
  95           var e = emitStartToken();
  96           var text = emitEndToken();
  97
  98           var c = text.toHSBColour(window.client);
  99           if($defined(c))
 100             e.style.color = c.rgbToHex();
 101           capturingNick = autoNickColour = false;
 102         }
 103         continue;
 104       }
 105     } else if(lc == "\x00") {
 106       continue;
 107     }
 108
 109     if(lc == "\x02") {
 110       emitEndToken();
 111
 112       bold = !bold;
 113
 114       emitStartToken();
 115     } else if(lc == "\x1F") {
 116       emitEndToken();
 117
 118       underline = !underline;
 119
 120       emitStartToken();
 121     } else if(lc == "\x0F") {
 122       emitEndToken();
 123
 124       fg = undefined;
 125       bg = undefined;
 126       underline = false;
 127       bold = false;
 128     } else if(lc == "\x03") {
 129       emitEndToken();
 130
 131       i = parseColours(xline, i);
 132       if(bg >= 99)
 133         bg = undefined;
 134       if(fg >= 99)
 135         fg = undefined;
 136
 137       emitStartToken();
 138     } else {
 139       out.push(lc);
 140     }
 141   }
 142
 143   emitEndToken();
 144 }
 145
 146 String.prototype.toHSBColour = function(client) {
 147   var lower = client.toIRCLower(client.stripPrefix(this));
 148   if(lower == client.lowerNickname)
 149     return null;
 150
 151   var hash = 0;
 152   for(var i=0;i<lower.length;i++)
 153     hash = 31 * hash + lower.charCodeAt(i);
 154
 155   var hue = Math.abs(hash) % 360;
 156
 157   return new Color([hue, 70, 60], "hsb");
 158 }