All,
I am working on a SVG web application & having a tough time figuring this
one out.
The functionality I want to achieve allows the user to draw (with the
mouse) a rectangle around objects already placed on the screen. When two or
more objects are under this drawn rectangle, they get grouped together, and
then upon mousedown (event) inside the drawn rectangle, the user can drag the
selected objects in unison.
I have been able to statically grouped elements together but am struggling
with the dynamic aspect, i.e. when the user selects the object, only then
should they be grouped together & once the the user clicks outside the drawn
box, the grouping ends & each objects again becomes independent.
here is some code.....
var far=document.getElementById("oo")
far.addEventListener("load", function (){
var svgDoc=far.contentDocument;
var svgRoot=svgDoc.documentElement;
document.getElementById("bar").onclick=function(){
var g =
svgDoc.createElementNS("http://www.w3.org/2000/svg";, "g");
g.setAttribute('id', 'group');
g.setAttribute('shape-rendering', 'inherit');
g.setAttribute('pointer-events', 'all');
var use =
svgDoc.createElementNS("http://www.w3.org/2000/svg";, "use")
use.setAttributeNS("http://www.w3.org/1999/xlink";,
"xlink:href", "#group")
use.setAttributeNS(null,"id", "u")
svgRoot.appendChild(use)
var
create_bar=svgDoc.createElementNS("http://www.w3.org/2000/svg";, "rect")
create_bar.setAttribute("id", "r_bar")
create_bar.setAttribute("fill", "cream")
create_bar.setAttribute("x", "300px")
create_bar.setAttribute("y", "50px")
create_bar.setAttribute("width", "100px")
create_bar.setAttribute("height", "30px")
create_bar.setAttribute("pointer-events", "inherit")
g.appendChild(create_bar)
var cir =
svgDoc.createElementNS("http://www.w3.org/2000/svg";, "circle");
cir.setAttribute( "id","cir")
cir.setAttribute( "cx","320px")
cir.setAttribute( "cy","65px")
cir.setAttribute( "r","10px")
cir.setAttribute('fill', 'red')
cir.setAttribute('pointer-events', 'inherit')
g.appendChild(cir)
svgRoot.appendChild(g)
}
var btn_id=document.getElementById('bar2')
btn_id.onclick=function()
{
var a=svgDoc.getElementById('r_bar')
var b=svgDoc.getElementById('group')
var c=svgDoc.getElementById('cir')
var d=svgDoc.getElementById('u')
alert(a.id+".."+b.id+".."+c.id+".."+d.id)
}
},false)
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