How to get individual object's width, height, left and top in selection:created event? - fabricjs

Question

I am getting the values of the properties of an object(top,width...) as an object is being scaled/moved by using this function :
canvas.on('object:scaling', onObjectModification);
canvas.on('object:moving', onObjectModification);
canvas.on('object:rotating', onObjectModification);
function onObjectModification(e) {
var activeObject = e.target;
var reachedLimit = false;
objectLeft = activeObject.left,
objectTop = activeObject.top,
objectWidth = activeObject.width,
objectHeight = activeObject.height,
canvasWidth = canvas.width,
canvasHeight = canvas.height;
}
How can I get the same for each object that are being moved as a group? I need the values to be constantly changing as the object:scaling event provide.
I know of the event selection:created but I am lost how to use that to attain what I want. Any help from you guys would be highly appreciated.
Thanks

Answer 1

during object scaling width and height will not change. They will be the same all the time, just scaleX and scaleY will change.
You have to write a function that will iterate on possibile group sub objects.
canvas.on('object:scaling', onObjectModification);
canvas.on('object:moving', onObjectModification);
canvas.on('object:rotating', onObjectModification);
function onObjectModification(e) {
var activeObject = e.target;
if (!activeObject) {
return;
}
var canvasWidth = canvas.width;
var canvasHeight = canvas.height;
var reachedLimit = false;
var objectLeft = activeObject.left;
var objectTop = activeObject.top;
// this provide scaled height and width
var objectWidth = activeObject.getWidth();
var objectHeight = activeObject.getHeight();
if (activeObject._objects) {
objs = activeObject._objects;
for (var i= 0; i < objs.length; i++) {
var obj = objs[i];
var objWidth = activeObject.getWidth() * activeObject.scaleX;
var objHeight = activeObject.getHeight() * activeObject.scaleY;
}
}
}