Control MetricsPreview()
{
metricsPreview = new Drawable {
Size = new Size(200, 100)
};
metricsPreview.Paint += (sender, pe) =>
{
var width = metricsPreview.Size.Width;
pe.Graphics.PixelOffsetMode = PixelOffsetMode.Half;
pe.Graphics.DrawRectangle(Colors.Black, new RectangleF(metricsPreview.Size));
var size = pe.Graphics.MeasureString(selectedFont, preview.Text);
var scale = ParentWindow.Screen.Scale;
var ypos = Math.Max(0, (metricsPreview.Size.Height - size.Height) / 2);
pe.Graphics.FillRectangle(Brushes.GhostWhite(), new RectangleF(new PointF(0, ypos), size));
pe.Graphics.DrawText(selectedFont, Colors.Black, 0, ypos, preview.Text);
var baseline = ypos + selectedFont.Baseline * scale;
pe.Graphics.DrawLine(Pens.Black(), 0, baseline, width, baseline);
var ascender = baseline - selectedFont.Ascent * scale;
pe.Graphics.DrawLine(Pens.Blue(), 0, ascender, width, ascender);
var descender = baseline + selectedFont.Descent * scale;
pe.Graphics.DrawLine(Pens.Red(), 0, descender, width, descender);
var xheight = baseline - selectedFont.XHeight * scale;
pe.Graphics.DrawLine(Pens.Green(), 0, xheight, width, xheight);
var lineheight = ypos + selectedFont.LineHeight * scale;
pe.Graphics.DrawLine(Pens.Orange(), 0, lineheight, width, lineheight);
};
return(metricsPreview);
}