protected override Size ArrangeOverride(Size finalSize)
{
double resolution = this.Resolution;
Point2D origin = new Point2D(this.OriginX, this.OriginY);
Rectangle2D clipBox = new Rectangle2D(
origin.X - (resolution * 4191.0),
origin.Y - (resolution * 4191.0),
origin.X + (resolution * 4191.0),
origin.Y + (resolution * 4191.0));
if (this.Layer is ElementsLayer) (Layer as ElementsLayer).BoundsCollection.Clear();
if (this.Layer is ElementsLayer) orignalBounds.Clear();
bool istrue = this.Layer is ElementsLayer ? (this.Layer as ElementsLayer).IsAutoAvoidance : false;
if (istrue)
{
foreach (UIElement element in base.Children)
{
Rectangle2D b = GetBounds(element);
double referenceLength = (Layer as ElementsLayer).GetReferenceLength(element) * resolution;
if (b.BottomLeft == b.TopRight)
{
b = new Rectangle2D(b.Left - (referenceLength) / 2, b.Bottom - (element.DesiredSize.Height * resolution) / 2,
b.Left + (referenceLength) / 2, b.Bottom + (element.DesiredSize.Height * resolution) / 2);
}
orignalBounds.Add(b);
}
}
foreach (UIElement element in base.Children)
{
if (element.Visibility != Visibility.Visible)
{
continue;
}
if (element is FeatureElement)
{
this.ArrangeFeature(element as FeatureElement, clipBox);
continue;
}
if (element is ShapeElement)
{
this.ArrangeShapeBase(element as ShapeElement, clipBox);
continue;
}
Rectangle2D b = GetBounds(element);
if (istrue)
{
if (b.BottomLeft == b.TopRight)
{
b = new Rectangle2D(b.Left - (element.DesiredSize.Width * resolution) / 2, b.Bottom - (element.DesiredSize.Height * resolution) / 2,
b.Left + (element.DesiredSize.Width * resolution) / 2, b.Bottom + (element.DesiredSize.Height * resolution) / 2);
}
bool isIntersect;
bool isGetNewBounds;
double referenceLength = (Layer as ElementsLayer).GetReferenceLength(element) * resolution;
Size referenceSize = (Layer as ElementsLayer).GetReferenceSize(element);
b = isBoundsChange(b, referenceLength, referenceSize, out isIntersect, out isGetNewBounds);
if (isIntersect)
{
if (isGetNewBounds)
{
(element as UIElement).Opacity = 1;
}
else
{
(element as UIElement).Opacity = 0;
}
}
else
{
(element as UIElement).Opacity = 1;
}
(Layer as ElementsLayer).BoundsCollection.Add(element, b);
}
if (!Rectangle2D.IsNullOrEmpty(b))
{
double pixelX = (b.Left - origin.X) / resolution;
double pixelY = (origin.Y - b.Top) / resolution;
double pixelWidth = b.Width / resolution;
double pixelHeight = b.Height / resolution;
//&&
if (this.Layer is TiledLayer)
{
pixelWidth++;
pixelHeight++;
element.UseLayoutRounding = false;
}
if (((!double.IsInfinity(pixelWidth) && !double.IsInfinity(pixelHeight)) && (!double.IsInfinity(pixelX) && !double.IsInfinity(pixelY))) && ((!double.IsNaN(pixelWidth) && !double.IsNaN(pixelHeight)) && (!double.IsNaN(pixelX) && !double.IsNaN(pixelY))))
{
double width;
double height;
if (((element is FrameworkElement) && (pixelWidth != 0.0)) && (pixelHeight != 0.0))
{
(element as FrameworkElement).Width = pixelWidth;
(element as FrameworkElement).Height = pixelHeight;
}
if ((pixelWidth != 0.0) || (pixelHeight != 0.0))
{
element.Arrange(new Rect(pixelX, pixelY, pixelWidth, pixelHeight));
continue;
}
//相当于左上，右下，中心等位置的设定。
//设在某个点，bbox的宽和高都是0，比如pushpin\textbox等
switch (((HorizontalAlignment)element.GetValue(FrameworkElement.HorizontalAlignmentProperty)))
{
case HorizontalAlignment.Left:
width = element.DesiredSize.Width;
break;
case HorizontalAlignment.Right:
width = 0.0;
break;
default:
width = element.DesiredSize.Width * 0.5;
break;
}
switch (((VerticalAlignment)element.GetValue(FrameworkElement.VerticalAlignmentProperty)))
{
case VerticalAlignment.Top:
height = element.DesiredSize.Height;
break;
case VerticalAlignment.Bottom:
height = 0.0;
break;
default:
height = element.DesiredSize.Height * 0.5;
break;
}
element.Arrange(new Rect(new Point(pixelX - width, pixelY - height), element.DesiredSize));
}
}
}
return base.ArrangeOverride(finalSize);
}