protected override Size MeasureOverride(Size availableSize)
{
if (Display != null)
{
float clientW = (float)Display.ClientWidth;
float clientH = (float)Display.ClientHeight;
SizeToContent sizeToContent = SizeToContent;
if (sizeToContent == SizeToContent.Manual)
{
base.MeasureOverride(new Size(clientW, clientH));
return(new Size(Width, Height));
}
else
{
// calculate content desired size
Size constraint = new Size(
sizeToContent == SizeToContent.Height ? clientW : float.PositiveInfinity,
sizeToContent == SizeToContent.Width ? clientH : float.PositiveInfinity);
Size desiredSize = base.MeasureOverride(constraint);
// adjust content size to window size (including borders)
int desiredWidth = (int)Math.Ceiling(desiredSize.Width);
int desiredHeight = (int)Math.Ceiling(desiredSize.Height);
Display.AdjustWindowSize(ref desiredWidth, ref desiredHeight);
// update window to the desired size
if (sizeToContent != SizeToContent.Height)
{
Width = desiredWidth;
}
else
{
desiredWidth = (int)Width;
}
if (sizeToContent != SizeToContent.Width)
{
Height = desiredHeight;
}
else
{
desiredHeight = (int)Height;
}
return(new Size(desiredWidth, desiredHeight));
}
}
return(base.MeasureOverride(availableSize));
}
private Size MeasureContent()
{
// Make sure window is already initialized and template is applied
InitObject();
ApplyTemplate();
// Measure window content
UIElement child = VisualTreeHelper.GetChild(this, 0) as UIElement;
if (child != null)
{
child.Measure(new Size(float.PositiveInfinity, float.PositiveInfinity));
Size desiredSize = child.DesiredSize;
int width = (int)Math.Ceiling(desiredSize.Width);
int height = (int)Math.Ceiling(desiredSize.Height);
Display.AdjustWindowSize(ref width, ref height);
return(new Size(width, height));
}
return(new Size(0.0f, 0.0f));
}