Private methods in a module, and modules in BangleApps

either way, this is definetly shorter:

function drawCorner(obj, x, y, n) {
  g.setColor(obj.C.color.primary.base);
  let s1, s2 = 1;
  switch (n) {
    case 0: // Top Left
      s1 = s2 = -1;
      break;
    case 1: // Top Right
      s2 = -1;
      break;
    case 2: // Bottom Left
      s1 = -1;
      break;
    case 3: // Bottom
      break;
  }
  const x1 = x + obj.cornerOffset *s1;
  const y1 = y + obj.cornerOffset *s2;
  g.fillRect(x1, y1, x, y - obj.cornerSize*(s1*-1) + obj.cornerOffset*s1);
  g.fillRect(x1, y1, x - obj.cornerSize*(s2*-1) + obj.cornerOffset*s2, y);
}

Arwes.prototype.drawFrameNoCorners = function (x1, y1, x2, y2) {
  g.setColor(this.C.color.primary.dark);
  g.drawRect(x1, y1, x2, y2);
}