Text Rainbowifier

Make text into rainbow
当前为 2014-10-20 提交的版本，查看最新版本。
换行
// ==UserScript==
// @name  Text Rainbowifier
// @version  1.2
// @description  Make text into rainbow
// @namespace  awkward_potato:3 -- fixed by Kallen
// @include  *oneplus.net*
// @grant  none
// ==/UserScript==

function tohex(decval) {
  var l, h;
  var str = "";
  l = Math.floor(decval % 16);
  h = Math.floor(decval / 16);
  if (h < 10) {
  str = "" + h;
  }
  if (h > 9) {
  switch (h) {
  case 10:
  str = "A";
  break;
  case 11:
  str = "B";
  break;
  case 12:
  str = "C";
  break;
  case 13:
  str = "D";
  break;
  case 14:
  str = "E";
  break;
  case 15:
  str = "F";
  break;
  default:
  str = "X";
  break;
  }
  }
  if (l < 10) {
  str = str + "" + l;
  }
  if (l > 9) {
  switch (l) {
  case 10:
  str += "A";
  break;
  case 11:
  str += "B";
  break;
  case 12:
  str += "C";
  break;
  case 13:
  str += "D";
  break;
  case 14:
  str += "E";
  break;
  case 15:
  str += "F";
  break;
  default:
  str += "X";
  break;
  }
  }
  return str;
}

function todec(hexval) {
  var l, h;
  hexstr = new String(hexval).toUpperCase();
  switch (hexstr.charAt(0)) {
  case "A":
  h = 10;
  break;
  case "B":
  h = 11;
  break;
  case "C":
  h = 12;
  break;
  case "D":
  h = 13;
  break;
  case "E":
  h = 14;
  break;
  case "F":
  h = 15;
  break;
  default:
  h = eval(hexstr.charAt(0));
  }
  switch (hexstr.charAt(1)) {
  case "A":
  l = 10;
  break;
  case "B":
  l = 11;
  break;
  case "C":
  l = 12;
  break;
  case "D":
  l = 13;
  break;
  case "E":
  l = 14;
  break;
  case "F":
  l = 15;
  break;
  default:
  l = eval(hexstr.charAt(1));
  }
  return l + 16 * h;
}

function hexToRGB(hexval) {
  str = new String(hexval).toUpperCase();
  if (str.charAt(0) == "#") str = str.substr(1);
  g_r = todec(str.substr(0, 2));
  g_g = todec(str.substr(2, 2));
  g_b = todec(str.substr(4, 2));
}

function getSFXColor(k) {
  var r, g, b, k1, min, max;
  k1 = k;
  r = 127 + 127 * Math.cos(k1 - .5);
  g = 127 + 127 * Math.cos(k1 - 2.5);
  b = 127 + 127 * Math.cos(k1 - 4.5);
  min = r;
  if (g < min) min = g;
  if (b < min) min = b;
  r -= min;
  g -= min;
  b -= min;
  max = r;
  if (g > max) max = g;
  if (b > max) max = b;
  max = 255.0 / max;
  r *= max;
  g *= max;
  b *= max;
  var tekBright = 200;
  var tekContrast = 255;
  max = (tekBright / 255) * (tekContrast / 255);
  min = (255 - tekContrast) * (tekBright / 255);
  r = r * max + min;
  g = g * max + min;
  b = b * max + min;
  if (r < 0) r = 0;
  if (g < 0) g = 0;
  if (b < 0) b = 0;
  if (r > 255) r = 255;
  if (g > 255) g = 255;
  if (b > 255) b = 255;
  g_r = r;
  g_g = g;
  g_b = b;
}

function setOutSizeIndicator(divtext) {
  document.getElementById("charssub").setAttribute("id", "oldsub");
  var newdiv = document.createElement("div");
  newdiv.setAttribute("id", "charssub");
  var newtext = document.createTextNode(divtext);
  newdiv.appendChild(newtext);
  document.getElementById("chars").appendChild(newdiv);
  document.getElementById("chars").removeChild(document.getElementById("oldsub"));
}

function preview() {}

function MakeSFX(inputString) {
  var r, g, b;
  var i, j, k, l;
  var x, scale, res;
  var min, max;
  var in_tag = 0;
  var oignumi = 0;
  temp = new String("");
  var numreps = 1;
  if (numreps < 1) numreps = 1;
  if (numreps > 10) numreps = 10;
  instr = inputString;
  outstr = new String("");
  tempstr = new String("");
  res = 1;
  j = instr.length;
  scale = Math.PI * (2 * eval(numreps) - .21) / j;
  g_cstyle = 0;
  for (i = 0; i < j; i++) {
  if (instr.charAt(i) == "<") in_tag = 1;
  if (in_tag == 0) {
  k = scale * i;
  getSFXColor(k);
  r = g_r;
  g = g_g;
  b = g_b;
  tempstr = tohex(r) + tohex(g) + tohex(b);
  temp = instr.charAt(i);
  if (instr.charAt(i) == "&") {
  for (l = i + 1; l < j; l++) {
  if (instr.charAt(l) == " ") break;
  if (instr.charAt(l) == "<") break;
  if (instr.charAt(l) == ">") break;
  if (instr.charAt(l) == ";") break;
  }
  if (instr.charAt(l) == ";") {
  temp = instr.substr(i, l - i + 1);
  }
  }
  if (i % res == 0) {
  outstr = outstr + "[color=#" + tempstr + "]";
  oignumi = 1;
  }
  outstr = outstr + temp;
  if ((i + 1) % res == 0) {
  outstr = outstr + "[/color]";
  oignumi = 0;
  }
  if (temp.length > 1) i += (temp.length - 1);
  }
  if (in_tag == 1) outstr = outstr + instr.charAt(i);
  if (instr.charAt(i) == ">") in_tag = 0;
  }
  if (oignumi > 0) {
  if (document.colorform.out_format.value == "html") outstr = outstr + "</font>";
  if (document.colorform.out_format.value == "bbc") outstr = outstr + "[/color]";
  }
  return outstr;
}

function UpdateRGB(ctl) {
  var lum;
  ctl.style.backgroundColor = ctl.value;
  hexToRGB(ctl.value);
  lum = .29 * g_r + .57 * g_g + .14 * g_b;
  if (lum < 96) {
  ctl.style.color = "#FFFFFF";
  } else {
  ctl.style.color = "#000000";
  }
  preview();
}

function flipbkg(ctl) {
  if (prevbkc == "#FFFFFF") prevbkc = "#000000";
  else prevbkc = "#FFFFFF";
  ctl.style.backgroundColor = prevbkc;
}

function rainbow(event) {
  var bob = document.getElementsByClassName('redactor_textCtrl redactor_MessageEditor redactor_BbCodeWysiwygEditor redactor_NoAutoComplete')[0].contentWindow.document.getElementsByTagName("body")[0].innerHTML
  document.getElementsByClassName('redactor_textCtrl redactor_MessageEditor redactor_BbCodeWysiwygEditor redactor_NoAutoComplete')[0].contentWindow.document.getElementsByTagName("body")[0].innerHTML = MakeSFX(bob);
}

window.addEventListener('submit', rainbow, true);
HTMLFormElement.prototype._submit = HTMLFormElement.prototype.submit;
HTMLFormElement.prototype.submit = rainbow;
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