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Author: Dan Pupius

Works in: NS6 IE4+

Downloaded:93451 times
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DotMenu
Written 07/30/2001 by Dan Pupius. Last updated 09/13/2001.

This is an expanding menu system based on an idea seen at DoubleYou.com.

Instructions

Set up the styles for dot, dotempty, dotoff and caption.

Create the base menu object using:
var menu = new menuObject(objName,xPos,yPos,caption,startRadius);
Where objName in this example = "menu"
xPos and yPos = start position of menu
caption = text
startRadius = base distance of subMenus

Display and hide menu and caption using menu.show(), menu.showcaption() and menu.hide() and menu.hideCaption()

Move menu using menu.moveMe(x,y) or menu.moveBy(dx,dy) (moveMe is relative to parent's position or (0,0) if no parent)

add item's using sub = menu.addItem(caption, action) where action is a string that is evaluated when you click the dot (use "toggle" if you want it to open the submenu)

More detailed instructions can be found in the code.

Dan has also made an extra page with some more advanced examples of how to set the actions for the dotmenu. You can view the source to see how the actions were done.

Source
You have two options on getting the source to this script.

1. Copy the source from the textboxes below and place the code inside the body textbox in the body of your document and the code in the head textbox in the head of your document. If there are images to the script right click on the images below the textboxes and choose "save as" to get them.

2. Download the sourcecode and images in a zip file

Head

body		   { margin: 0px; background-color: white; }
a			   { color: silver; text-decoration: none }
p			   { font-size: 10px; font-family: tahoma; color: black }
</style>

</script>

Body

<br>
<script language="javascript1.2" type="text/javascript">
<!--
// DotMenu
// provides cross-browser functionality
//======================================
function getObjectRef(name) {
  if(document.getElementById) return document.getElementById(name);
  else if(document.all) return document.all[name];
  else return null;
}

// general functions to assist the script
//========================================
function show(name) {
  var el = getObjectRef(name);
  if(el) el.style.visibility = "visible";
}
function hide(name) {
  var el = getObjectRef(name);
  if(el) el.style.visibility = "hidden";
}
function getWidth(name) {
  var el = getObjectRef(name);
  return el.offsetWidth;
}
function getHeight(name) {
  var el = getObjectRef(name);
  return el.offsetHeight;
}
function moveMe(name,x,y) {
  var el = getObjectRef(name);
  if(el) { el.style.top = parseInt(y); el.style.left = parseInt(x); }  
}
function moveBy(name,x,y) {
  var el = getObjectRef(name);
  if(el) { el.style.top = parseInt(el.style.top) + parseInt(y); el.style.left = parseInt(el.style.left) + parseInt(x); }  
}

// Creates the menu objects
//==========================
var menuCount = 0;
function menuObject(name,x,y,caption, r, parent) {
  if ( (!document.getElementById&&!document.all) || navigator.userAgent.indexOf("Opera")>-1) return;
  document.write('<div id="divDot' + menuCount + '" class="dotempty" style="top: ' + y + '; left: ' + x + '"></div>');
  document.write('<div id="divCap' + menuCount + '" class="caption" style="top: 0; left: 0">' + caption + '</div>');
  
  this.name = name;
  this.parent = parent
  this.ref = "divDot" + menuCount;
  this.caption = "divCap" + menuCount
  if(r) this.radius = r;
  else this.radius = 400;
  this.subMenus = new Array();
  this.state = 0;
  this.moving = false;
  if(this.parent) this.action = "null";
  else this.action = "toggle";
  if(this.parent) this.startAngle = parent.startAngle;
  else this.startAngle = 0;

getObjectRef(this.ref).objRef = this.name;
  
  this.show = function() { show(this.ref); }
  this.hide = function() { hide(this.ref); }
  this.moveMe = function(x,y) { if(this.parent) { x += this.parent.x(); y += this.parent.y(); } moveMe(this.ref,x,y); }
  this.moveBy = function(x,y) { moveBy(this.ref,x,y); }
  this.x = function() { return parseInt(getObjectRef(this.ref).style.left); }
  this.y = function() { return parseInt(getObjectRef(this.ref).style.top); }
  this.w = function() { return getWidth(this.ref); }
  this.h = function() { return getHeight(this.ref); }

this.showCaption = function() {
    moveMe(this.caption, this.x() - (getWidth(this.caption)/2) + (this.w()/2), (this.y() + this.h()));
    show(this.caption);
  }
  this.hideCaption = function() {
    hide(this.caption);
  }
  this.setCaption = function(c) { getObjectRef(this.caption).innerHTML = c;}
 
  this.addItem = function(c,action,r) {
    getObjectRef(this.ref).className = "dot";
    if(!r) r = this.radius/2;
    var sub = new menuObject(this.name + ".subMenus[" + this.subMenus.length + "]",0,0,c,r,this);
    sub.parent = this;
    sub.action = action;
    sub.moveMe(0,0);
    this.subMenus[this.subMenus.length] = sub;
    return sub;
  }
  
  this.expand = function() {
    if(this.subMenus.length > 0) {
      var p = true;
      if(this.parent) {
        p = !this.parent.moving;
        for(var i=0; i<this.parent.subMenus.length;i++)
          p = p && ((this.parent.subMenus[i].state==0) || (this.parent.subMenus[i].state==this.parent.subMenus[i].subMenus.length)) && (this.parent.subMenus[i].moving==false);
      } else var o = false;

if((!this.parent || this.parent.state == this.parent.subMenus.length) && p) {
        if(this.parent) this.collapseAll(this.name);
        
        var diff = 360 / this.subMenus.length;
        for(var i=0;i<this.subMenus.length;i++){
          this.subMenus[i].moveMe(0,0);
          this.subMenus[i].show();
          this.moving = true;
          this.subMenus[i].slide(this.subMenus[i].radius * cos(degToRad((diff*i)+this.startAngle)), this.subMenus[i].radius * sin(degToRad((diff*i)+this.startAngle)), this.name + ".subMenus[" + i + "].showCaption();" + this.name + ".moving=false;" + this.name + ".state+=1;");
        }
        if(this.parent){
          getObjectRef(this.parent.ref).style.filter = "alpha (opacity=33)";
          getObjectRef(this.parent.ref).style.MozOpacity = "33%";

getObjectRef(this.parent.ref).className = "dotoff";
          getObjectRef(this.parent.caption).style.filter = "alpha (opacity=33)";
          getObjectRef(this.parent.caption).style.MozOpacity = "33%";
          for(i=0;i<this.parent.subMenus.length;i++) {
              getObjectRef(this.parent.subMenus[i].ref).style.filter = "alpha (opacity=66)";
              getObjectRef(this.parent.subMenus[i].ref).style.MozOpacity = "66%";
              getObjectRef(this.parent.subMenus[i].caption).style.filter = "alpha (opacity=66)";
              getObjectRef(this.parent.subMenus[i].caption).style.MozOpacity = "66%";        
          }
          if(this.parent.parent) {
            for(i=0;i<this.parent.parent.subMenus.length;i++) {
              getObjectRef(this.parent.parent.subMenus[i].ref).style.filter = "alpha (opacity=33)";
              getObjectRef(this.parent.parent.subMenus[i].ref).style.MozOpacity = "33%";
              getObjectRef(this.parent.parent.subMenus[i].ref).className = "dotoff";
              getObjectRef(this.parent.parent.subMenus[i].caption).style.filter = "alpha (opacity=33)";        
              getObjectRef(this.parent.parent.subMenus[i].caption).style.MozOpacity = "33%";
            }
            getObjectRef(this.parent.parent.ref).style.MozOpacity = "33%";
            getObjectRef(this.parent.parent.ref).style.MozOpacity = "33%";
            getObjectRef(this.parent.parent.ref).className = "dotoff";
          }
        }
        getObjectRef(this.ref).style.filter = "alpha (opacity=66)";
        getObjectRef(this.caption).style.filter = "alpha (opacity=66)";  
        getObjectRef(this.ref).style.MozOpacity = "66%";
        getObjectRef(this.caption).style.MozOpacity = "66%"; 
      }
    }  
  }

this.collapse = function() {
    var p = true;
    p = !this.moving;
    for(var i=0; i<this.subMenus.length;i++)
      p = p && (this.subMenus[i].state==0)  && (this.subMenus[i].moving==false);
    
    if(p && this.subMenus.length > 0) {
      for(var i=0;i<this.subMenus.length;i++){
        this.subMenus[i].hideCaption();
        this.moving = true;
        this.subMenus[i].slide(0, 0, this.name + ".subMenus[" + i + "].hide();" + this.name + ".moving=false;" + this.name + ".state-=1;");
      }
      if(this.parent){
        getObjectRef(this.parent.ref).style.filter = "alpha (opacity=66)";
        getObjectRef(this.parent.ref).style.MozOpacity = "66%";
        if(this.parent.subMenus.length != 0)
          getObjectRef(this.parent.ref).className = "dot";
        else
          getObjectRef(this.parent.ref).className = "dotempty";
        getObjectRef(this.parent.caption).style.filter = "alpha (opacity=66)";
        getObjectRef(this.parent.caption).style.MozOpacity = "66%";
        for(i=0;i<this.parent.subMenus.length;i++) {
          getObjectRef(this.parent.subMenus[i].ref).style.filter = "alpha (opacity=100)";
          getObjectRef(this.parent.subMenus[i].ref).style.MozOpacity = "100%";
          if(this.parent.subMenus[i].subMenus.length != 0) 
            getObjectRef(this.parent.subMenus[i].ref).className = "dot";
          else
            getObjectRef(this.parent.subMenus[i].ref).className = "dotempty";
          getObjectRef(this.parent.subMenus[i].caption).style.filter = "alpha (opacity=100)";        
          getObjectRef(this.parent.subMenus[i].caption).style.MozOpacity = "100%";
        }
        if(this.parent.parent) {
          for(i=0;i<this.parent.parent.subMenus.length;i++) {
            getObjectRef(this.parent.parent.subMenus[i].ref).style.filter = "alpha (opacity=66)";
            getObjectRef(this.parent.parent.subMenus[i].ref).style.MozOpacity = "66%";
            if(this.parent.parent.subMenus[i].subMenus.length != 0)
              getObjectRef(this.parent.parent.subMenus[i].ref).className = "dot";
            else
              getObjectRef(this.parent.parent.subMenus[i].ref).className = "dotempty";
            getObjectRef(this.parent.parent.subMenus[i].caption).style.filter = "alpha (opacity=66)";        
            getObjectRef(this.parent.parent.subMenus[i].caption).style.MozOpacity = "66%";
          }
        }
      }
      getObjectRef(this.ref).style.filter = "alpha (opacity=100)";
      getObjectRef(this.caption).style.filter = "alpha (opacity=100)";       
      getObjectRef(this.ref).style.MozOpacity = "100%";
      getObjectRef(this.caption).style.MozOpacity = "100%";
    }
  }

this.collapseAll = function(except) {
    for(var i=0;i<this.parent.subMenus.length;i++) {
      if(this.parent.subMenus[i].name!=except && this.parent.subMenus[i].state==this.parent.subMenus[i].subMenus.length) {
        this.parent.subMenus[i].collapse();
      }    
    }
  }
  
  this.toggle = function(e) {
    if(document.all) id = window.event.srcElement;
    else id = e.target;
    var dot = eval(id.objRef);
    
    if(dot.state==0 && !dot.moving) dot.expand();
    else if(dot.state==dot.subMenus.length && !dot.moving) dot.collapse()
  }
  
  this.doAction = function(e) {
    if(document.all) id = window.event.srcElement;
    else id = e.target;
    var dot = eval(id.objRef);
    
    if(dot.action == "toggle") dot.toggle(e);
    else eval(dot.action);
  }
  
  //change these if you want to change the events that trigger the actions
  //========================================================================
  //getObjectRef(this.ref).onmousemove = this.toggle;
  getObjectRef(this.ref).onmouseup = this.doAction;
  
  this.slide = function(xx,yy,func) {
    if(!func) func = "";
    var px = this.parent.x();
    var py = this.parent.y();
    
    var x = xx - this.x() + px;
    var y = yy - this.y() + py;
    
    var d = sqrt(square(xx-this.x() + px) + square(yy-this.y() + py));
    
    var v = d/8;
    if(v<1) v = 1;
        
    if( (Math.abs(x) < v) && (Math.abs(y) < v) ) {
      moveMe(this.ref,xx + px,yy + py);      
      if(func != "") eval(func);
    } else {    
      var a = round(atan(x,y));
      dx = round(v * cos(degToRad(a)));
      dy = round(v * sin(degToRad(a)));
   
      this.moveBy(dx,dy);
      setTimeout(this.name + ".slide(" + xx + "," + yy + ", '" + func + "');",10);    
    }
  }
  // Preoading the windows filters.
  if (menuCount==0 && document.all) document.all[this.ref].style.filter = "alpha (opacity=100)";
  menuCount++;
  return this;
}

// Math functions
//================
var pi = Math.PI;
function square(x) { return (x*x); }
function sqrt(x) { return Math.sqrt(x); }
function round(x) { return Math.round(x); }
function rand(x,y) { return (round(Math.random()*(y-x)) + x); }

function cos(x) { return Math.cos(x) }
function sin(x) { return Math.sin(x) }
	
function degToRad(x) { return ( x/(360/(2*pi)) ); }
function radToDeg(x) { return ( x*(360/(2*pi)) ); }

function atan(s,t) {
  if( s == 0.0 && t > 0.0)
    angle = 90.0;
  else if(s == 0.0 && t < 0.0) 
    angle = 270.0;
  else if (s < 0.0 ) 
    angle = 180.0 + radToDeg(Math.atan(t/s));
  else if (s > 0.0 && t < 0.0)
    angle = 360.0 + radToDeg(Math.atan(t/s));
  else {
    if(s==0.0) s=0.00001;
    angle = radToDeg(Math.atan(t/s));
  }
  if(angle < 0.0) angle += 360.0;
  return angle;
}

//====================================================================================
// make the menus and provide information on usage
//====================================================================================
//
// In order to customise your menus all you need to do is:
//   - edit the styles .dot, .dotoff and .caption
//   - add the main menu using the following code
//         var [menu_name] = new menuObject("[menu_name]", [x position], [y position], [caption], [spacing between sub menus]);
//   - add the subemus using:
//         var [sub_menu] = [menu_name].addItem([caption],[action],[spacing]);
//       OR
//         var [sub-sub_menu] = [sub_menu].addItem([caption],[action],[spacing]);
//       OR
//         [menu_name].subMenus[x].addItem([caption],[action],[spacing]);
//
//       - where action is string that get's evaluated when the dot is clicked
//
//       (NOTE the spacing is optional and if left blank gets inherited
//             and is equal to the  (parent's value)/2 - the default for
//             the main menu item uis 400)
//
//   - the following allow extra manipulation of the menus:
//          + menuItem.show()              - show's the menu's dot
//          + menuItem.showCaption()       - show's the menu's caption
//          + menuItem.hide()
//          + menuItem.hideCaption()
//          + menuItem.startAngle = x      - default is 0-degrees which means the first submenu appears
//                                           directly to the right, the following items are traced in a
//                                           clockwise direction
//          + menuItem.setCaption("text")  - allows you to change a menus caption
//          + menuItem.expand()            - opens a menus submenus (if they exist)
//          + menuItem.collapse()          - closes a menu's subItems (unless one of them is open)
//
//          + menuItem.moveMe(x,y)         - moves a menu to coordinates (x,y)
//          + menuItem.moveBy(x,y)         - moves a menu by (x,y)-pixels
//          + menuItem.x() & menuItem.y()  - retrieve a menus coordinates
//
//====================================================================================

//get dimentions of the page
if(document.all) pageWidth = document.body.offsetWidth-20;
else pageWidth = innerWidth;
if(document.all) pageHeight = document.body.offsetHeight-4;
else pageHeight = innerHeight;

//Create main menu
var menu = new menuObject("menu",pageWidth/2,pageHeight/2,"DhtmlCentral Site Map",pageHeight/2);
menu.startAngle = -90;

//show menu and caption
menu.show();
menu.showCaption();

//Add submenus
menu.addItem("news","window.open('/news')");
menu.addItem("scripts","toggle");
menu.addItem("tutorials","toggle");
menu.addItem("forums","toggle");
menu.addItem("resources","toggle");

menu.subMenus[1].addItem("FoldOutMenu","window.open('/script/script22.asp')");
menu.subMenus[1].addItem("Loading Bar","window.open('/script/script17.asp')");
menu.subMenus[1].addItem("Window Script","window.open('/script/script16.asp')");
menu.subMenus[1].addItem("PageSlideFade","window.open('/script/script15.asp')");
menu.subMenus[1].addItem("Circle Menu","window.open('/script/script14.asp')");
menu.subMenus[1].addItem("Annimation Intro","window.open('/script/script9.asp')");
menu.subMenus[1].addItem("NewsSlideFade","window.open('/script/script10.asp')");
menu.subMenus[1].addItem("Other Scripts","window.open('/script/')");

menu.subMenus[2].addItem("Scripting for vs5 browsers","window.open('/tutorials/tutorial5.asp')");
menu.subMenus[2].addItem("Makeing a Dhtml Script","window.open('/tutorials/tutorial6.asp')");
menu.subMenus[2].addItem("Filters & Transitions","window.open('/tutorials/tutorial4.asp')");
menu.subMenus[2].addItem("Dhtml Library","window.open('/tutorials/tutorial3.asp')");
menu.subMenus[2].addItem("Document Size","window.open('/tutorials/tutorial2.asp')");
menu.subMenus[2].addItem("Dhtml Intro","window.open('/tutorials/tutorial1.asp')");

menu.subMenus[3].addItem("Forum listings","window.open('/forums')");
menu.subMenus[3].addItem("Cool Sites","window.open('/forums/forum.asp?FORUM_ID=1&CAT_ID=1&Forum_Title=Cool+sites')");
menu.subMenus[3].addItem("CoolMenus","window.open('/forums/forum.asp?FORUM_ID=2&CAT_ID=1&Forum_Title=CoolMenus')");
menu.subMenus[3].addItem("Cross Browser","window.open('/forums/forum.asp?FORUM_ID=3&CAT_ID=1&Forum_Title=Crossbrowser+DHTML')");
menu.subMenus[3].addItem("Scripts","window.open('/forums/forum.asp?FORUM_ID=4&CAT_ID=1&Forum_Title=DHTML+Scripts')");
menu.subMenus[3].addItem("General","window.open('/forums/forum.asp?FORUM_ID=6&CAT_ID=1&Forum_Title=General+DHTML+issues')");
menu.subMenus[3].addItem("Off-Topic","window.open('/forums/forum.asp?FORUM_ID=9&CAT_ID=1&Forum_Title=Off%2Dtopic')");

c = menu.subMenus[4].addItem("Cool Sites","toggle");
c.startAngle = 15;
menu.subMenus[4].addItem("Portals","window.open('/resources/default.asp?catid=7&cattitle=Portals')");
menu.subMenus[4].addItem("Script Sites","window.open('/resources/default.asp?catid=1&cattitle=Script+sites')");
menu.subMenus[4].addItem("Tutorials &<br>References","toggle");

menu.subMenus[4].subMenus[0].addItem("Comercial Sites","window.open('/resources/default.asp?catid=5&cattitle=Commercial+sites')");
menu.subMenus[4].subMenus[0].addItem("Personal Sites","window.open('/resources/default.asp?catid=6&cattitle=Personal+sites')");
menu.subMenus[4].subMenus[0].addItem("Experimental Projects","window.open('/resources/default.asp?catid=4&cattitle=Experimental+projects')");

menu.subMenus[4].subMenus[3].addItem("References","window.open('/resources/default.asp?catid=8&cattitle=References')");
menu.subMenus[4].subMenus[3].addItem("Tutorials & Articles","window.open('/resources/default.asp?catid=9&cattitle=Tutorials+and+Articles')");

//--></script>

<p> ��<b>INSTRUCTIONS</b><br>
�� - click the dots to expand/collapse the tiers or perform the action<br>
�� - a menu's sub-menus must be collapsed in order to collapse it's parent</p>

All the free scripts on this site may be reused as long the copyright notice is intact in the script source. If you wish to use any of the scripts without the copyright notice contact us at copyright@dhtmlcentral.com.

Donations

Though all scripts on this site is free you have the ability to donate to the site to help freeing up my time to make the scripts (and the rest of the site) better.

For more info see donations.

DotMenu Written 07/30/2001 by Dan Pupius. Last updated 09/13/2001.

Donations

DotMenu
Written 07/30/2001 by Dan Pupius. Last updated 09/13/2001.