protected override void OnRender(DrawingContext dc)
{
Rect bounds = new Rect(0.0, 0.0, this.ActualWidth, this.ActualHeight);
Thickness borderThickness = this.BorderThickness;
double num1 = borderThickness.Left + borderThickness.Right;
double num2 = borderThickness.Top + borderThickness.Bottom;
bool flag = borderThickness.Left == 1.0 && borderThickness.Right == 1.0 && borderThickness.Top == 1.0 && borderThickness.Bottom == 1.0;
double num3 = num1 != 0.0 || num2 != 0.0 ? 1.0 : 0.0;
double num4 = 2.0 * num3;
if (bounds.Width > num1 && bounds.Height > num2)
{
Rect rectangle = new Rect(bounds.Left + borderThickness.Left, bounds.Top + borderThickness.Top, bounds.Width - num1, bounds.Height - num2);
Brush background = this.Background;
if (background != null)
{
dc.DrawRectangle(background, (Pen)null, rectangle);
}
if (bounds.Width > num1 + num4 && bounds.Height > num2 + num4)
{
rectangle = new Rect(bounds.Left + borderThickness.Left + num3, bounds.Top + borderThickness.Top + num3, bounds.Width - num1 - num4, bounds.Height - num2 - num4);
Brush backgroundOverlay = this.BackgroundOverlay;
if (backgroundOverlay != null)
{
dc.DrawRoundedRectangle(backgroundOverlay, (Pen)null, rectangle, 1.0, 1.0);
}
}
}
if (num3 <= 0.0 || bounds.Width < num1 || bounds.Height < num2)
{
return;
}
if (flag)
{
Rect rectangle = new Rect(bounds.Left + 0.5, bounds.Top + 0.5, bounds.Width - 1.0, bounds.Height - 1.0);
Pen borderPen = ListBoxChrome.GetBorderPen(this.BorderBrush);
Pen borderOverlayPen = this.BorderOverlayPen;
if (borderPen != null)
{
dc.DrawRoundedRectangle((Brush)null, borderPen, rectangle, 1.0, 1.0);
}
if (borderOverlayPen == null)
{
return;
}
dc.DrawRoundedRectangle((Brush)null, borderOverlayPen, rectangle, 1.0, 1.0);
}
else
{
Geometry borderGeometry = ListBoxChrome.GetBorderGeometry(borderThickness, bounds);
if (this.BorderBrush == null)
{
return;
}
dc.DrawGeometry(this.BorderBrush, (Pen)null, borderGeometry);
}
}
