private static object OnCoerceHeight(DependencyObject d, object baseValue)
{
double height = (double)baseValue;
DataGridColumnFloatingHeader header = (DataGridColumnFloatingHeader)d;
if (header._referenceHeader != null && DoubleUtil.IsNaN(height))
{
return(header._referenceHeader.ActualHeight + header.GetVisualCanvasMarginY());
}
return(baseValue);
}
private static void OnHeightChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
DataGridColumnFloatingHeader header = (DataGridColumnFloatingHeader)d;
double height = (double)e.NewValue;
if (header._visualBrushCanvas != null && !DoubleUtil.IsNaN(height))
{
VisualBrush brush = header._visualBrushCanvas.Background as VisualBrush;
if (brush != null)
{
Rect viewBox = brush.Viewbox;
brush.Viewbox = new Rect(viewBox.X, viewBox.Y, viewBox.Width, height - header.GetVisualCanvasMarginY());
}
}
}