Move object within canvas boundary limit

Question

I am trying to limit the moving object within the canvas but i am getting some difficulty to moving object with limit area on top and left side and when i scale the object w

Answer 1

Just modified a bit too the code of Balaji and Surya T so it take care fully now of canvas zoom setting.

   _self.layer.on('object:moving', function (e) {
        var obj = e.target;

        obj.setCoords();
        var curZoom = obj.canvas.getZoom();

        //
        // if object is too big ignore
        if(obj.getScaledHeight() > obj.canvas.height || obj.getScaledWidth() > obj.canvas.width){
            return;
        }

        // top-left  corner
        if(obj.getBoundingRect().top < 0 || obj.getBoundingRect().left < 0){
            obj.top = Math.max(obj.top*curZoom, obj.top*curZoom-obj.getBoundingRect().top)/curZoom;
            obj.left = Math.max(obj.left*curZoom, obj.left*curZoom-obj.getBoundingRect().left)/curZoom;
        }
        // bot-right corner
        if(obj.getBoundingRect().top+obj.getBoundingRect().height  > obj.canvas.height || obj.getBoundingRect().left+obj.getBoundingRect().width  > obj.canvas.width){
            obj.top = Math.min(obj.top*curZoom, obj.canvas.height-obj.getBoundingRect().height+obj.top*curZoom-obj.getBoundingRect().top)/curZoom;
            obj.left = Math.min(obj.left*curZoom, obj.canvas.width-obj.getBoundingRect().width+obj.left*curZoom-obj.getBoundingRect().left)/curZoom;
        }
    });