protected override void setPosition(System.Drawing.PointF position)
{
// to position the border, first get the amount we'll be moving
float deltaX = position.X - Label.GetX();
float deltaY = position.Y - Label.GetY();
Label.SetX(position.X);
Label.SetY(position.Y);
// now adjust the border by only the difference
if (UnderlineView != null)
{
UnderlineView.SetX(UnderlineView.GetX( ) + deltaX);
UnderlineView.SetY(UnderlineView.GetY( ) + deltaY);
}
}
void UpdateUnderline()
{
if (UnderlineView != null)
{
// first get the Y starting point of the font, relative to the control.
// (the control's top might start 5 pixels above the actual font, for example)
float fontYStart = (Label.LayoutParameters.Height - Label.TextSize) / 2;
// Update the Y position of the border here, because
// if the HEIGHT of the label changed, our starting Y position must change
// so we stay at the bottom of the label.
float borderYOffset = (fontYStart + Label.TextSize);
UnderlineView.SetY((int)Label.GetY( ) + (int)borderYOffset);
// Same for X
UnderlineView.LayoutParameters.Width = (int)((float)Label.LayoutParameters.Width * BORDER_WIDTH_SCALER);
float borderXOffset = (Label.LayoutParameters.Width - UnderlineView.LayoutParameters.Width) / 2;
UnderlineView.SetX((int)Label.GetX( ) + (int)borderXOffset);
}
}
