Drag inside and outside a range
/* dom-drag.js 09.25.2001 www.youngpup.net
10.28.2001 - fixed minor bug where events
sometimes fired off the handle, not the root.
*/
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
<html><head><title>DOM Drag Demo</title>
<style type="text/css">
<!--
html, body {
height:100%;
padding:0;
margin:0;
background:white;
font:11px verdana;
}
body {
margin:15px 40px;
}
#banner {
position:absolute;
top:0px; left:0px;
height:100%;
width:19px;
}
h1 {
font:11px verdana;
font-weight:bold;
margin-top:0;
margin-bottom:1em;
color:#FB3B00;
}
#b {
cursor:move;
}
#g {
cursor:hand;
cursor:pointer;
}
#pbox {
position:absolute;
left:45px; top:40px;
width:300px; height:275px;
border:1px dashed #333399;
}
-->
</style>
<script language="javascript">
/**************************************************
* dom-drag.js
* 09.25.2001
* www.youngpup.net
**************************************************
* 10.28.2001 - fixed minor bug where events
* sometimes fired off the handle, not the root.
**************************************************/
var Drag = {
obj : null,
init : function(o, oRoot, minX, maxX, minY, maxY, bSwapHorzRef, bSwapVertRef, fXMapper, fYMapper)
{
o.onmousedown = Drag.start;
o.hmode = bSwapHorzRef ? false : true ;
o.vmode = bSwapVertRef ? false : true ;
o.root = oRoot && oRoot != null ? oRoot : o ;
if (o.hmode && isNaN(parseInt(o.root.style.left ))) o.root.style.left = "0px";
if (o.vmode && isNaN(parseInt(o.root.style.top ))) o.root.style.top = "0px";
if (!o.hmode && isNaN(parseInt(o.root.style.right ))) o.root.style.right = "0px";
if (!o.vmode && isNaN(parseInt(o.root.style.bottom))) o.root.style.bottom = "0px";
o.minX = typeof minX != 'undefined' ? minX : null;
o.minY = typeof minY != 'undefined' ? minY : null;
o.maxX = typeof maxX != 'undefined' ? maxX : null;
o.maxY = typeof maxY != 'undefined' ? maxY : null;
o.xMapper = fXMapper ? fXMapper : null;
o.yMapper = fYMapper ? fYMapper : null;
o.root.onDragStart = new Function();
o.root.onDragEnd = new Function();
o.root.onDrag = new Function();
},
start : function(e)
{
var o = Drag.obj = this;
e = Drag.fixE(e);
var y = parseInt(o.vmode ? o.root.style.top : o.root.style.bottom);
var x = parseInt(o.hmode ? o.root.style.left : o.root.style.right );
o.root.onDragStart(x, y);
o.lastMouseX = e.clientX;
o.lastMouseY = e.clientY;
if (o.hmode) {
if (o.minX != null) o.minMouseX = e.clientX - x + o.minX;
if (o.maxX != null) o.maxMouseX = o.minMouseX + o.maxX - o.minX;
} else {
if (o.minX != null) o.maxMouseX = -o.minX + e.clientX + x;
if (o.maxX != null) o.minMouseX = -o.maxX + e.clientX + x;
}
if (o.vmode) {
if (o.minY != null) o.minMouseY = e.clientY - y + o.minY;
if (o.maxY != null) o.maxMouseY = o.minMouseY + o.maxY - o.minY;
} else {
if (o.minY != null) o.maxMouseY = -o.minY + e.clientY + y;
if (o.maxY != null) o.minMouseY = -o.maxY + e.clientY + y;
}
document.onmousemove = Drag.drag;
document.onmouseup = Drag.end;
return false;
},
drag : function(e)
{
e = Drag.fixE(e);
var o = Drag.obj;
var ey = e.clientY;
var ex = e.clientX;
var y = parseInt(o.vmode ? o.root.style.top : o.root.style.bottom);
var x = parseInt(o.hmode ? o.root.style.left : o.root.style.right );
var nx, ny;
if (o.minX != null) ex = o.hmode ? Math.max(ex, o.minMouseX) : Math.min(ex, o.maxMouseX);
if (o.maxX != null) ex = o.hmode ? Math.min(ex, o.maxMouseX) : Math.max(ex, o.minMouseX);
if (o.minY != null) ey = o.vmode ? Math.max(ey, o.minMouseY) : Math.min(ey, o.maxMouseY);
if (o.maxY != null) ey = o.vmode ? Math.min(ey, o.maxMouseY) : Math.max(ey, o.minMouseY);
nx = x + ((ex - o.lastMouseX) * (o.hmode ? 1 : -1));
ny = y + ((ey - o.lastMouseY) * (o.vmode ? 1 : -1));
if (o.xMapper) nx = o.xMapper(y)
else if (o.yMapper) ny = o.yMapper(x)
Drag.obj.root.style[o.hmode ? "left" : "right"] = nx + "px";
Drag.obj.root.style[o.vmode ? "top" : "bottom"] = ny + "px";
Drag.obj.lastMouseX = ex;
Drag.obj.lastMouseY = ey;
Drag.obj.root.onDrag(nx, ny);
return false;
},
end : function()
{
document.onmousemove = null;
document.onmouseup = null;
Drag.obj.root.onDragEnd( parseInt(Drag.obj.root.style[Drag.obj.hmode ? "left" : "right"]),
parseInt(Drag.obj.root.style[Drag.obj.vmode ? "top" : "bottom"]));
Drag.obj = null;
},
fixE : function(e)
{
if (typeof e == 'undefined') e = window.event;
if (typeof e.layerX == 'undefined') e.layerX = e.offsetX;
if (typeof e.layerY == 'undefined') e.layerY = e.offsetY;
return e;
}
};
</script>
<script language="javascript">
var reportBox, iReportCount = 0;
window.onload = function() {
if (document.all || document.getElementById)
{
var oB = document.all ? document.all["b"] : document.getElementById("b")
var oG = document.all ? document.all["g"] : document.getElementById("g")
var oP = document.all ? document.all["p"] : document.getElementById("p")
reportBox = document.all ? document.all["oReport"] : document.getElementById("oReport")
reportBox2 = document.all ? document.all["oReport2"] : document.getElementById("oReport2")
Drag.init(oB);
Drag.init(oG);
Drag.init(oP, null, 0, 274, 0, 249);
// report stuff
oB.onDragStart = function(x, y) { reportDragStart("black", x, y); }
oG.onDragStart = function(x, y) { reportDragStart("green", x, y); }
oP.onDragStart = function(x, y) { reportDragStart("purple", x, y); }
oB.onDragEnd = function(x, y) { reportDragEnd("black", x, y); }
oG.onDragEnd = function(x, y) { reportDragEnd("green", x, y); }
oP.onDragEnd = function(x, y) { reportDragEnd("purple", x, y); }
oB.onDrag = function(x, y) { reportDrag("black", x, y); }
oG.onDrag = function(x, y) { reportDrag("green", x, y); }
oP.onDrag = function(x, y) { reportDrag("purple", x, y); }
}
function reportDragStart(who, x, y) {
reportBox.value += who + " | onDragStart " + " (" + x + "," + y + ")\n"
}
function reportDragEnd(who, x, y) {
reportBox.value += who + " | onDragEnd " + " (" + x + "," + y + ")\n"
}
function reportDrag(who, x, y) {
reportBox2.value = who + " | onDrag " + " (" + x + "," + y + ")"
}
}
</script>
</head>
<body>
<div id="banner"></div>
<h1>DOM-Drag Examples: Main Features</h1>
<textarea id="oReport" style="margin-top: 320px; margin-left: 20px; width: 300px; height: 100px;" wrap="off"></textarea>
<input onmouseover="this.runtimeStyle.border='2px solid red';" id="oReport2" style="margin-left: 20px; margin-top: 5px; width: 300px;" type="text">
<!-- note that you don't have to contain a layer like this to constrain it. the DIV is only there so i can draw a border around it. -->
<div id="pbox">
<img id="p" title="isn't this simple pointer much better?" style="position: absolute; left: 134px; top: 156px;" src="p.gif">
</div>
<img id="b" title="these special cursors are really annoying" style="position: absolute; left: 145px; top: 118px;" src="b.gif">
<img id="g" title="please don't use them" style="position: absolute; left: 118px; top: 131px;" src="g.gif">
</body>
</html>
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