Fabricjs. How to insert image with rounded borders?

Question

Need to insert image to fabric js and make rounded borders to it. (NOT to whole canvas) Read answer here:

Fabric.js Clip Canvas (or object group) To Polygon

But i can't reproduce clipping as that guy made.

var clip = canvas.item(0);
var obj = canvas.item(1);
canvas.remove(clip);
obj.clipTo = function(ctx) {
  clip.render(ctx);
};

Tried to make svg rectange and clip image to it: http://jsfiddle.net/ZxYCP/657/

I'm getting unexpected behavior...

Answer 1

Here is an example how it can be done:

var canvas = new fabric.Canvas('c');

function roundedCorners(ctx) {
  var rect = new fabric.Rect({
    left:0,
    top:0,
    rx:20 / this.scaleX,
    ry:20 / this.scaleY,
    width:this.width,
    height:this.height,
    fill:'#000000'
  });
  rect._render(ctx, false);
}

fabric.Image.fromURL('http://fabricjs.com/lib/pug.jpg', function(img) {
  img.set({
    angle: 45,
    width: 500,
    height: 500,
    left: 140,
    top: 100,
    scaleX: 0.3,
    scaleY: 0.3,
    clipTo: roundedCorners.bind(img)
  });
  canvas.add(img).setActiveObject(img);
});

See fiddle here: http://jsfiddle.net/ZxYCP/659/