public override Size CalculateRadioButtonAutoSize (RadioButton rb)
{
Size ret_size = Size.Empty;
Size text_size = TextRenderer.MeasureTextInternal (rb.Text, rb.Font, rb.UseCompatibleTextRendering);
Size image_size = rb.Image == null ? Size.Empty : rb.Image.Size;
// Pad the text size
if (rb.Text.Length != 0) {
text_size.Height += 4;
text_size.Width += 4;
}
switch (rb.TextImageRelation) {
case TextImageRelation.Overlay:
ret_size.Height = Math.Max (rb.Text.Length == 0 ? 0 : text_size.Height, image_size.Height);
ret_size.Width = Math.Max (text_size.Width, image_size.Width);
break;
case TextImageRelation.ImageAboveText:
case TextImageRelation.TextAboveImage:
ret_size.Height = text_size.Height + image_size.Height;
ret_size.Width = Math.Max (text_size.Width, image_size.Width);
break;
case TextImageRelation.ImageBeforeText:
case TextImageRelation.TextBeforeImage:
ret_size.Height = Math.Max (text_size.Height, image_size.Height);
ret_size.Width = text_size.Width + image_size.Width;
break;
}
// Pad the result
ret_size.Height += (rb.Padding.Vertical);
ret_size.Width += (rb.Padding.Horizontal) + 15;
// There seems to be a minimum height
if (ret_size.Height == rb.Padding.Vertical)
ret_size.Height += 14;
return ret_size;
}