private float DetermineStretchedItemU(
int start,
int end,
RadElementCollection internalChildren,
float totalU)
{
List <RadElement> radElementList = new List <RadElement>();
for (int index = start; index < end; ++index)
{
RadElement internalChild = internalChildren[index];
if (internalChild != null && internalChild.Visibility != ElementVisibility.Collapsed)
{
radElementList.Add(internalChild);
}
}
int count = radElementList.Count;
float num1 = totalU / (float)count;
float num2 = totalU;
radElementList.Sort(new Comparison <RadElement>(this.ElementComparisonBySizeDesc));
for (int index = 0; index < radElementList.Count; ++index)
{
RadElement radElement = radElementList[index];
WrapLayoutPanel.UVSize uvSize = new WrapLayoutPanel.UVSize(this.Orientation, radElement.DesiredSize.Width, radElement.DesiredSize.Height);
if ((double)uvSize.U > (double)num1)
{
num2 -= uvSize.U;
--count;
num1 = num2 / (float)count;
}
}
return(num1);
}
protected override SizeF ArrangeOverride(SizeF finalSize)
{
int start = 0;
float itemWidth = this.ItemWidth;
float itemHeight = this.ItemHeight;
float VPosition = 0.0f;
float itemU = this.Orientation == Orientation.Horizontal ? itemWidth : itemHeight;
float totalU = this.Orientation == Orientation.Horizontal ? finalSize.Width : finalSize.Height;
WrapLayoutPanel.UVSize uvSize1 = new WrapLayoutPanel.UVSize(this.Orientation);
WrapLayoutPanel.UVSize uvSize2 = new WrapLayoutPanel.UVSize(this.Orientation, finalSize.Width, finalSize.Height);
bool flag1 = !float.IsNaN(itemWidth);
bool flag2 = !float.IsNaN(itemHeight);
bool useItemU = this.Orientation == Orientation.Horizontal ? flag1 : flag2;
RadElementCollection children = this.Children;
int index = 0;
for (int count = children.Count; index < count; ++index)
{
RadElement radElement = children[index];
if (radElement != null)
{
WrapLayoutPanel.UVSize uvSize3 = new WrapLayoutPanel.UVSize(this.Orientation, flag1 ? itemWidth : radElement.DesiredSize.Width, flag2 ? itemHeight : radElement.DesiredSize.Height);
if (DoubleUtil.GreaterThan(uvSize1.U + uvSize3.U, uvSize2.U))
{
this.ArrangeLine(VPosition, uvSize1.V, start, index, useItemU, itemU, totalU);
VPosition += uvSize1.V;
uvSize1 = uvSize3;
if (DoubleUtil.GreaterThan(uvSize3.U, uvSize2.U))
{
this.ArrangeLine(VPosition, uvSize3.V, index, ++index, useItemU, itemU, totalU);
VPosition += uvSize3.V;
uvSize1 = new WrapLayoutPanel.UVSize(this.Orientation);
}
start = index;
}
else
{
uvSize1.U += uvSize3.U;
uvSize1.V = Math.Max(uvSize3.V, uvSize1.V);
}
}
}
if (start < children.Count)
{
this.ArrangeLine(VPosition, uvSize1.V, start, children.Count, useItemU, itemU, totalU);
}
return(finalSize);
}
protected override SizeF MeasureOverride(SizeF constraint)
{
WrapLayoutPanel.UVSize uvSize1 = new WrapLayoutPanel.UVSize(this.Orientation);
WrapLayoutPanel.UVSize uvSize2 = new WrapLayoutPanel.UVSize(this.Orientation);
WrapLayoutPanel.UVSize uvSize3 = new WrapLayoutPanel.UVSize(this.Orientation, constraint.Width, constraint.Height);
float itemWidth = this.ItemWidth;
float itemHeight = this.ItemHeight;
bool flag1 = !float.IsNaN(itemWidth);
bool flag2 = !float.IsNaN(itemHeight);
SizeF availableSize = new SizeF(flag1 ? itemWidth : constraint.Width, flag2 ? itemHeight : constraint.Height);
RadElementCollection children = this.Children;
int index = 0;
for (int count = children.Count; index < count; ++index)
{
RadElement radElement = children[index];
if (radElement != null)
{
radElement.Measure(availableSize);
WrapLayoutPanel.UVSize uvSize4 = new WrapLayoutPanel.UVSize(this.Orientation, flag1 ? itemWidth : radElement.DesiredSize.Width, flag2 ? itemHeight : radElement.DesiredSize.Height);
if (DoubleUtil.GreaterThan(uvSize1.U + uvSize4.U, uvSize3.U))
{
uvSize2.U = Math.Max(uvSize1.U, uvSize2.U);
uvSize2.V += uvSize1.V;
uvSize1 = uvSize4;
if (DoubleUtil.GreaterThan(uvSize4.U, uvSize3.U))
{
uvSize2.U = Math.Max(uvSize4.U, uvSize2.U);
uvSize2.V += uvSize4.V;
uvSize1 = new WrapLayoutPanel.UVSize(this.Orientation);
}
}
else
{
uvSize1.U += uvSize4.U;
uvSize1.V = Math.Max(uvSize4.V, uvSize1.V);
}
}
}
uvSize2.U = Math.Max(uvSize1.U, uvSize2.U);
uvSize2.V += uvSize1.V;
return(new SizeF(uvSize2.Width, uvSize2.Height));
}
private void ArrangeLine(
float VPosition,
float lineV,
int start,
int end,
bool useItemU,
float itemU,
float totalU)
{
float num1 = 0.0f;
bool flag = this.Orientation == Orientation.Horizontal;
RadElementCollection children = this.Children;
float num2 = 0.0f;
if (this.stretchItems)
{
num2 = this.DetermineStretchedItemU(start, end, children, totalU);
}
for (int index = start; index < end; ++index)
{
RadElement radElement = children[index];
if (radElement != null)
{
WrapLayoutPanel.UVSize uvSize = new WrapLayoutPanel.UVSize(this.Orientation, radElement.DesiredSize.Width, radElement.DesiredSize.Height);
float num3 = useItemU ? itemU : uvSize.U;
if (this.stretchItems && radElement.Visibility != ElementVisibility.Collapsed && (double)num3 < (double)num2)
{
num3 = num2;
}
RectangleF finalRect = new RectangleF(flag ? num1 : VPosition, flag ? VPosition : num1, flag ? num3 : lineV, flag ? lineV : num3);
if (this.RightToLeft && flag)
{
finalRect.X = totalU - finalRect.X - finalRect.Width;
}
radElement.Arrange(finalRect);
num1 += num3;
}
}
}
