topical media & game development
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

talk show tell print

lib-present-math-s5-files-slides.js / js



  // S5 v1.1 slides.js -- released into the Public Domain
  //
  // Please see http://www.meyerweb.com/eric/tools/s5/credits.html for information 
  // about all the wonderful and talented contributors to this code!
  
  var undef;
  var slideCSS = '';
  var snum = 0;
  var smax = 1;
  var incpos = 0;
  var number = undef;
  var s5mode = true;
  var defaultView = 'slideshow';
  var controlVis = 'visible';
  
  var isIE = navigator.appName == 'Microsoft Internet Explorer' ? 1 : 0;
  var isOp = navigator.userAgent.indexOf('Opera') > -1 ? 1 : 0;
  var isGe = navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('Safari') < 1 ? 1 : 0;
  
  function hasClass(object, className) {
          if (!object.className || typeof object.className!="string") 
            return false;
          return (object.className.search('(^|\\s)' + className + '(\\s|)') != -1);
  }
  
  function hasValue(object, value) {
          if (!object) return false;
          return (object.search('(^|\\s)' + value + '(\\s|)') != -1);
  }
  
  function removeClass(object,className) {
          if (!object) return;
          object.className = object.className.replace(new RegExp('(^|\\s)'+className+'(\\s|)'), RegExp.$1+RegExp.$2);
  }
  
  function addClass(object,className) {
          if (!object || hasClass(object, className)) return;
          if (object.className) {
                  object.className += ' '+className;
          } else {
                  object.className = className;
          }
  }
  
  function GetElementsWithClassName(elementName,className) {
          var allElements = document.getElementsByTagName(elementName);
          var elemColl = new Array();
          for (var i = 0; i< allElements.length; i++) {
                  if (hasClass(allElements[i], className)) {
                          elemColl[elemColl.length] = allElements[i];
                  }
          }
          return elemColl;
  }
  
  function isParentOrSelf(element, id) {
          if (element == null || element.nodeName=='BODY') return false;
          else if (element.id == id) return true;
          else return isParentOrSelf(element.parentNode, id);
  }
  
  function nodeValue(node) {
          var result = "";
          if (node.nodeType == 1) {
                  var children = node.childNodes;
                  for (var i = 0; i < children.length; ++i) {
                          result += nodeValue(children[i]);
                  }                
          }
          else if (node.nodeType == 3) {
                  result = node.nodeValue;
          }
          return(result);
  }
  
  function slideLabel() {
          var slideColl = GetElementsWithClassName('*','slide');
          var list = document.getElementById('jumplist');
          smax = slideColl.length;
          for (var n = 0; n < smax; n++) {
                  var obj = slideColl[n];
  
                  var did = 'slide' + n.toString();
                  obj.setAttribute('id',did);
                  if (isOp) continue;
  
                  var otext = '';
                  var menu = obj.firstChild;
                  if (!menu) continue; // to cope with empty slides
                  while (menu && menu.nodeType == 3) {
                          menu = menu.nextSibling;
                  }
                   if (!menu) continue; // to cope with slides with only text nodes
  
                  var menunodes = menu.childNodes;
                  for (var o = 0; o < menunodes.length; o++) {
                          otext += nodeValue(menunodes[o]);
                  }
                  list.options[list.length] = new Option(n + ' : '  + otext, n);
          }
  }
  
  function currentSlide() {
          var cs;
          if (document.getElementById) {
                  cs = document.getElementById('currentSlide');
          } else {
                  cs = document.currentSlide;
          }
          cs.innerHTML = '<span id="csHere">' + snum + '<\/span> ' + 
                  '<span id="csSep">\/<\/span> ' + 
                  '<span id="csTotal">' + (smax-1) + '<\/span>';
          if (snum == 0) {
                  cs.style.visibility = 'hidden';
          } else {
                  cs.style.visibility = 'visible';
          }
  }
  
  function go(step) {
          if (document.getElementById('slideProj').disabled || step == 0) return;
          var jl = document.getElementById('jumplist');
          var cid = 'slide' + snum;
          var ce = document.getElementById(cid);
          if (incrementals[snum].length > 0) {
                  for (var i = 0; i < incrementals[snum].length; i++) {
                          removeClass(incrementals[snum][i], 'current');
                          removeClass(incrementals[snum][i], 'incremental');
                  }
          }
          if (step != 'j') {
                  snum += step;
                  lmax = smax - 1;
                  if (snum > lmax) snum = lmax;
                  if (snum < 0) snum = 0;
          } else
                  snum = parseInt(jl.value);
          var nid = 'slide' + snum;
          var ne = document.getElementById(nid);
          if (!ne) {
                  ne = document.getElementById('slide0');
                  snum = 0;
          }
          if (step < 0) {incpos = incrementals[snum].length} else {incpos = 0;}
          if (incrementals[snum].length > 0 && incpos == 0) {
                  for (var i = 0; i < incrementals[snum].length; i++) {
                          if (hasClass(incrementals[snum][i], 'current'))
                                  incpos = i + 1;
                          else
                                  addClass(incrementals[snum][i], 'incremental');
                  }
          }
          if (incrementals[snum].length > 0 && incpos > 0)
                  addClass(incrementals[snum][incpos - 1], 'current');
          ce.style.visibility = 'hidden';
          ne.style.visibility = 'visible';
          jl.selectedIndex = snum;
          currentSlide();
          number = 0;
  }
  
  function goTo(target) {
          if (target >= smax || target == snum) return;
          go(target - snum);
  }
  
  function subgo(step) {
          if (step > 0) {
                  removeClass(incrementals[snum][incpos - 1],'current');
                  removeClass(incrementals[snum][incpos], 'incremental');
                  addClass(incrementals[snum][incpos],'current');
                  incpos++;
          } else {
                  incpos--;
                  removeClass(incrementals[snum][incpos],'current');
                  addClass(incrementals[snum][incpos], 'incremental');
                  addClass(incrementals[snum][incpos - 1],'current');
          }
  }
  
  function toggle() {
          var slideColl = GetElementsWithClassName('*','slide');
          var slides = document.getElementById('slideProj');
          var outline = document.getElementById('outlineStyle');
          if (!slides.disabled) {
                  slides.disabled = true;
                  outline.disabled = false;
                  s5mode = false;
                  fontSize('1em');
                  for (var n = 0; n < smax; n++) {
                          var slide = slideColl[n];
                          slide.style.visibility = 'visible';
                  }
          } else {
                  slides.disabled = false;
                  outline.disabled = true;
                  s5mode = true;
                  fontScale();
                  for (var n = 0; n < smax; n++) {
                          var slide = slideColl[n];
                          slide.style.visibility = 'hidden';
                  }
                  slideColl[snum].style.visibility = 'visible';
          }
  }
  
  function showHide(action) {
          var obj = GetElementsWithClassName('*','hideme')[0];
          switch (action) {
          case 's': obj.style.visibility = 'visible'; break;
          case 'h': obj.style.visibility = 'hidden'; break;
          case 'k':
                  if (obj.style.visibility != 'visible') {
                          obj.style.visibility = 'visible';
                  } else {
                          obj.style.visibility = 'hidden';
                  }
          break;
          }
  }
  
  // 'keys' code adapted from MozPoint (http://mozpoint.mozdev.org/)
  function keys(key) {
          if (!key) {
                  key = event;
                  key.which = key.keyCode;
          }
          if (key.which == 84) {
                  toggle();
                  return;
          }
          if (s5mode) {
                  switch (key.which) {
                          case 10: // return
                          case 13: // enter
                                  if (window.event && isParentOrSelf(window.event.srcElement, 'controls')) return;
                                  if (key.target && isParentOrSelf(key.target, 'controls')) return;
                                  if(number != undef) {
                                          goTo(number);
                                          break;
                                  }
                          case 32: // spacebar
                          case 34: // page down
                          case 39: // rightkey
                          case 40: // downkey
                                  if(number != undef) {
                                          go(number);
                                  } else if (!incrementals[snum] || incpos >= incrementals[snum].length) {
                                          go(1);
                                  } else {
                                          subgo(1);
                                  }
                                  break;
                          case 33: // page up
                          case 37: // leftkey
                          case 38: // upkey
                                  if(number != undef) {
                                          go(-1 * number);
                                  } else if (!incrementals[snum] || incpos <= 0) {
                                          go(-1);
                                  } else {
                                          subgo(-1);
                                  }
                                  break;
                          case 36: // home
                                  goTo(0);
                                  break;
                          case 35: // end
                                  goTo(smax-1);
                                  break;
                          case 67: // c
                                  showHide('k');
                                  break;
                  }
                  if (key.which < 48 || key.which > 57) {
                          number = undef;
                  } else {
                          if (window.event && isParentOrSelf(window.event.srcElement, 'controls')) return;
                          if (key.target && isParentOrSelf(key.target, 'controls')) return;
                          number = (((number != undef) ? number : 0) * 10) + (key.which - 48);
                  }
          }
          return false;
  }
  
  function clicker(e) {
          number = undef;
          var target;
          if (window.event) {
                  target = window.event.srcElement;
                  e = window.event;
          } else target = e.target;
          if (target.getAttribute('href') != null || hasValue(target.rel, 'external') || isParentOrSelf(target, 'controls') || isParentOrSelf(target,'embed') || isParentOrSelf(target,'object')) return true;
          if (!e.which || e.which == 1) {
                  if (!incrementals[snum] || incpos >= incrementals[snum].length) {
                          go(1);
                  } else {
                          subgo(1);
                  }
          }
  }
  
  function findSlide(hash) {
          var target = null;
          var slides = GetElementsWithClassName('*','slide');
          for (var i = 0; i < slides.length; i++) {
                  var targetSlide = slides[i];
                  if ( (targetSlide.name && targetSlide.name == hash)
                   || (targetSlide.id && targetSlide.id == hash) ) {
                          target = targetSlide;
                          break;
                  }
          }
          while(target != null && target.nodeName != 'BODY') {
                  if (hasClass(target, 'slide')) {
                          return parseInt(target.id.slice(5));
                  }
                  target = target.parentNode;
          }
          return null;
  }
  
  function slideJump() {
          if (window.location.hash == null) return;
          var sregex = /^#slide(\d+)/;
          var matches = sregex.exec(window.location.hash);
          var dest = null;
          if (matches != null) {
                  dest = parseInt(matches[1]);
          } else {
                  dest = findSlide(window.location.hash.slice(1));
          }
          if (dest != null)
                  go(dest - snum);
  }
  
  function fixLinks() {
          var thisUri = window.location.href;
          thisUri = thisUri.slice(0, thisUri.length - window.location.hash.length);
          var aelements = document.getElementsByTagName('A');
          for (var i = 0; i < aelements.length; i++) {
                  var a = aelements[i].href;
                  var slideID = a.match('#slide[0-9]{1,2}');
                  if ((slideID) && (slideID[0].slice(0,1) == '#')) {
                          var dest = findSlide(slideID[0].slice(1));
                          if (dest != null) {
                                  if (aelements[i].addEventListener) {
                                          aelements[i].addEventListener("click", new Function("e",
                                                  "if (document.getElementById('slideProj').disabled) return;" +
                                                  "go("+dest+" - snum); " +
                                                  "if (e.preventDefault) e.preventDefault();"), true);
                                  } else if (aelements[i].attachEvent) {
                                          aelements[i].attachEvent("onclick", new Function("",
                                                  "if (document.getElementById('slideProj').disabled) return;" +
                                                  "go("+dest+" - snum); " +
                                                  "event.returnValue = false;"));
                                  }
                          }
                  }
          }
  }
  
  function externalLinks() {
          if (!document.getElementsByTagName) return;
          var anchors = document.getElementsByTagName('a');
          for (var i=0; i<anchors.length; i++) {
                  var anchor = anchors[i];
                  if (anchor.getAttribute('href') && hasValue(anchor.rel, 'external')) {
                          anchor.target = '_blank';
                          addClass(anchor,'external');
                  }
          }
  }
  
  function createControls() {
          var controlsDiv = document.getElementById("controls");
          if (!controlsDiv) return;
          var hider = ' onmouseover="showHide(\'s\');" onmouseout="showHide(\'h\');"';
          var hideDiv, hideList = '';
          if (controlVis == 'hidden') {
                  hideDiv = hider;
          } else {
                  hideList = hider;
          }
          controlsDiv.innerHTML = '<form action="#" id="controlForm"' + hideDiv + '>' +
          '<div id="navLinks">' +
          '<a accesskey="t" id="toggle" href="javascript:toggle();">&#216;<\/a>' +
          '<a accesskey="z" id="prev" href="javascript:go(-1);">&laquo;<\/a>' +
          '<a accesskey="x" id="next" href="javascript:go(1);">&raquo;<\/a>' +
          '<div id="navList"' + hideList + '><select id="jumplist" onchange="go(\'j\');"><\/select><\/div>' +
          '<\/div><\/form>';
          if (controlVis == 'hidden') {
                  var hidden = document.getElementById('navLinks');
          } else {
                  var hidden = document.getElementById('jumplist');
          }
          addClass(hidden,'hideme');
  }
  
  function fontScale() {  // causes layout problems in FireFox that get fixed if browser's Reload is used; same may be true of other Gecko-based browsers
          if (!s5mode) return false;
          var vScale = 22;  // both yield 32 (after rounding) at 1024x768
          var hScale = 32;  // perhaps should auto-calculate based on theme's declared value?
          if (window.innerHeight) {
                  var vSize = window.innerHeight;
                  var hSize = window.innerWidth;
          } else if (document.documentElement.clientHeight) {
                  var vSize = document.documentElement.clientHeight;
                  var hSize = document.documentElement.clientWidth;
          } else if (document.body.clientHeight) {
                  var vSize = document.body.clientHeight;
                  var hSize = document.body.clientWidth;
          } else {
                  var vSize = 700;  // assuming 1024x768, minus chrome and such
                  var hSize = 1024; // these do not account for kiosk mode or Opera Show
          }
          var newSize = Math.min(Math.round(vSize/vScale),Math.round(hSize/hScale));
          fontSize(newSize + 'px');
          if (isGe) {  // hack to counter incremental reflow bugs
                  var obj = document.getElementsByTagName('body')[0];
                  obj.style.display = 'none';
                  obj.style.display = 'block';
          }
  }
  
  function fontSize(value) {
          if (!(s5ss = document.getElementById('s5ss'))) {
                  if (!isIE) {
                          document.getElementsByTagName('head')[0].appendChild(s5ss = document.createElement('style'));
                          s5ss.setAttribute('media','screen, projection');
                          s5ss.setAttribute('id','s5ss');
                  } else {
                          document.createStyleSheet();
                          document.s5ss = document.styleSheets[document.styleSheets.length - 1];
                  }
          }
          if (!isIE) {
                  while (s5ss.lastChild) s5ss.removeChild(s5ss.lastChild);
                  s5ss.appendChild(document.createTextNode('body {font-size: ' + value + ' !important;}'));
          } else {
                  document.s5ss.addRule('body','font-size: ' + value + ' !important;');
          }
  }
  
  function notOperaFix() {
          slideCSS = document.getElementById('slideProj').href;
          var slides = document.getElementById('slideProj');
          var outline = document.getElementById('outlineStyle');
          slides.setAttribute('media','screen');
          outline.disabled = true;
          if (isGe) {
                  slides.setAttribute('href','null');   // Gecko fix
                  slides.setAttribute('href',slideCSS); // Gecko fix
          }
          if (isIE && document.styleSheets && document.styleSheets[0]) {
                  document.styleSheets[0].addRule('img', 'behavior: url(ui/default/iepngfix.htc)');
                  document.styleSheets[0].addRule('div', 'behavior: url(ui/default/iepngfix.htc)');
                  document.styleSheets[0].addRule('.slide', 'behavior: url(ui/default/iepngfix.htc)');
          }
  }
  
  function getIncrementals(obj) {
          var incrementals = new Array();
          if (!obj) 
                  return incrementals;
          var children = obj.childNodes;
          for (var i = 0; i < children.length; i++) {
                  var child = children[i];
                  if (hasClass(child, 'incremental')) {
                          if (child.nodeName == 'OL' || child.nodeName == 'UL') {
                                  removeClass(child, 'incremental');
                                  for (var j = 0; j < child.childNodes.length; j++) {
                                          if (child.childNodes[j].nodeType == 1) {
                                                  addClass(child.childNodes[j], 'incremental');
                                          }
                                  }
                          } else {
                                  incrementals[incrementals.length] = child;
                                  removeClass(child,'incremental');
                          }
                  }
                  if (hasClass(child, 'show-first')) {
                          if (child.nodeName == 'OL' || child.nodeName == 'UL') {
                                  removeClass(child, 'show-first');
                                  if (child.childNodes[isGe].nodeType == 1) {
                                          removeClass(child.childNodes[isGe], 'incremental');
                                  }
                          } else {
                                  incrementals[incrementals.length] = child;
                          }
                  }
                  incrementals = incrementals.concat(getIncrementals(child));
          }
          return incrementals;
  }
  
  function createIncrementals() {
          var incrementals = new Array();
          for (var i = 0; i < smax; i++) {
                  incrementals[i] = getIncrementals(document.getElementById('slide'+i));
          }
          return incrementals;
  }
  
  function defaultCheck() {
          var allMetas = document.getElementsByTagName('meta');
          for (var i = 0; i< allMetas.length; i++) {
                  if (allMetas[i].name == 'defaultView') {
                          defaultView = allMetas[i].content;
                  }
                  if (allMetas[i].name == 'controlVis') {
                          controlVis = allMetas[i].content;
                  }
          }
  }
  
  // Key trap fix, new function body for trap()
  function trap(e) {
          if (!e) {
                  e = event;
                  e.which = e.keyCode;
          }
          try {
                  modifierKey = e.ctrlKey || e.altKey || e.metaKey;
          }
          catch(e) {
                  modifierKey = false;
          }
          return modifierKey || e.which == 0;
  }
  
  function startup() {
          defaultCheck();
          if (!isOp) createControls();
          slideLabel();
          fixLinks();
          externalLinks();
          fontScale();
          if (!isOp) {
                  notOperaFix();
                  incrementals = createIncrementals();
                  slideJump();
                  if (defaultView == 'outline') {
                          toggle();
                  }
                  document.onkeyup = keys;
                  document.onkeypress = trap;
                  document.onclick = clicker;
          }
  }
  
  window.onload = startup;
  window.onresize = function(){setTimeout('fontScale()', 50);}
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

(C) Æliens 27/08/2009

You may not copy or print any of this material without explicit permission of the author or the publisher. In case of other copyright issues, contact the author.