protected override Size ArrangeOverride(Size finalSize)
{
Rect finalRect = new Rect(0.0, 0.0, finalSize.Width, finalSize.Height);
foreach (UIElement element in this.InternalChildren)
{
double actualSplitterLength = SplitterPanel.GetActualSplitterLength(element);
if (this.Orientation == Orientation.Horizontal)
{
finalRect.Width = actualSplitterLength;
element.Arrange(finalRect);
finalRect.X += actualSplitterLength;
}
else
{
finalRect.Height = actualSplitterLength;
element.Arrange(finalRect);
finalRect.Y += actualSplitterLength;
}
}
return(finalSize);
}
internal void ResizeChildren(int index1, int index2, double pixelAmount)
{
if (!this.IsArrangeValid)
{
return;
}
UIElement element1;
SplitterLength splitterLength1;
do
{
element1 = this.InternalChildren[index1];
splitterLength1 = SplitterPanel.GetSplitterLength(element1);
if (splitterLength1.IsFixed)
{
--index1;
}
}while (splitterLength1.IsFixed && index1 >= 0);
UIElement element2;
SplitterLength splitterLength2;
do
{
element2 = this.InternalChildren[index2];
splitterLength2 = SplitterPanel.GetSplitterLength(element2);
if (splitterLength2.IsFixed)
{
++index2;
}
}while (splitterLength2.IsFixed && index2 < this.InternalChildren.Count);
if (index1 < 0 || index2 >= this.InternalChildren.Count)
{
return;
}
double actualSplitterLength1 = SplitterPanel.GetActualSplitterLength(element1);
double actualSplitterLength2 = SplitterPanel.GetActualSplitterLength(element2);
double num1 = Math.Max(0.0, Math.Min(actualSplitterLength1 + actualSplitterLength2, actualSplitterLength1 + pixelAmount));
double num2 = Math.Max(0.0, Math.Min(actualSplitterLength1 + actualSplitterLength2, actualSplitterLength2 - pixelAmount));
double minimumLength1 = SplitterPanel.GetMinimumLength(element1);
double minimumLength2 = SplitterPanel.GetMinimumLength(element2);
if (minimumLength1 + minimumLength2 > num1 + num2)
{
return;
}
if (num1 < minimumLength1)
{
num2 -= minimumLength1 - num1;
num1 = minimumLength1;
}
if (num2 < minimumLength2)
{
num1 -= minimumLength2 - num2;
num2 = minimumLength2;
}
if (splitterLength1.IsFill && splitterLength2.IsFill || splitterLength1.IsStretch && splitterLength2.IsStretch)
{
SplitterPanel.SetSplitterLength(element1, new SplitterLength(num1 / (num1 + num2) * (splitterLength1.Value + splitterLength2.Value), splitterLength1.SplitterUnitType));
SplitterPanel.SetSplitterLength(element2, new SplitterLength(num2 / (num1 + num2) * (splitterLength1.Value + splitterLength2.Value), splitterLength1.SplitterUnitType));
}
else if (splitterLength1.IsFill)
{
SplitterPanel.SetSplitterLength(element2, new SplitterLength(num2, SplitterUnitType.Stretch));
}
else
{
SplitterPanel.SetSplitterLength(element1, new SplitterLength(num1, SplitterUnitType.Stretch));
}
this.InvalidateMeasure();
}