public override void LayoutSubviews()
{
const int ThinPad = 3;
const int ThickPad = 10;
const int LineHeight = 1;
var w = Frame.Width;
var h = Frame.Height;
SignaturePrompt.SizeToFit();
ClearLabel.SizeToFit();
var captionHeight = Caption.SizeThatFits(Caption.Frame.Size).Height;
var clearButtonHeight = (int)ClearLabel.Font.LineHeight + 1;
var rect = new CGRect(0, 0, w, h);
SignaturePadCanvas.Frame = rect;
BackgroundImageView.Frame = rect;
var top = h;
top = top - ThinPad - captionHeight;
Caption.Frame = new CGRect(ThickPad, top, w - ThickPad - ThickPad, captionHeight);
top = top - ThinPad - SignatureLine.Frame.Height;
SignatureLine.Frame = new CGRect(ThickPad, top, w - ThickPad - ThickPad, LineHeight);
top = top - ThinPad - SignaturePrompt.Frame.Height;
SignaturePrompt.Frame = new CGRect(ThickPad, top, SignaturePrompt.Frame.Width, SignaturePrompt.Frame.Height);
ClearLabel.Frame = new CGRect(w - ThickPad - ClearLabel.Frame.Width, ThickPad, ClearLabel.Frame.Width, clearButtonHeight);
}
