protected override Size2i CalcChildrenMinimumSize(Group group)
{
//the minimum size is the size of the largest child
Size2i res = Size2i.Zero;
foreach (Widget w in group.Children)
{
res = Size2i.Max(res, w.LayoutResult.MinSize);
}
return(res);
}
public override void CalcChildrenFinalPos(Group group, Size2i size)
{
size = Size2i.Max(size, group.LayoutResult.MinSize);
//Compute the space we have to distribute among expanding controls:
int expandspacex = Math.Max(0, size.Width - group.LayoutResult.MinSize.Width);
int expandspacey = Math.Max(0, size.Height - group.LayoutResult.MinSize.Height);
//Find the internal rectangle to layout inside
Rect2i area = GetChildLayoutArea(group, size);
//compute number of controls that expands in some direction
int numxexpanding = 0;
int numyexpanding = 0;
foreach (Widget child in group.Children)
{
if (child.LayoutResult.ExpandX)
{
numxexpanding++;
}
if (child.LayoutResult.ExpandY)
{
numyexpanding++;
}
}
int ci = group.Children.Count;
foreach (Widget child in group.Children)
{
PackSide chpack = child.PackSide;
Rect2i alloc;
bool last = (ci == group.Children.Count - 1); //last control laid out?
int gapx = (ci == group.Children.Count - 1) ? 0:group.GapX; //no gap added for last control
int gapy = (ci == group.Children.Count - 1) ? 0 : group.GapY; //no gap added for last control
int extrax = 0, extray = 0;
if (child.LayoutResult.ExpandX)
{
if (last) //last control can expand on all remaining space
{
extrax = Math.Max(0, area.Width - child.LayoutResult.MinSize.Width);
}
else
{
extrax = DistributSpace(ci, numxexpanding, expandspacex);
}
}
if (child.LayoutResult.ExpandY)
{
if (last) //last control can expand on all remaining space
{
extray = Math.Max(0, area.Height - child.LayoutResult.MinSize.Height);
}
else
{
extray = DistributSpace(ci, numyexpanding, expandspacey);
}
}
if ((chpack & PackSide.Bottom) != 0)
{
alloc = new Rect2i(area.Left, area.Bottom - child.LayoutResult.MinSize.Height - extray, area.Width, child.LayoutResult.MinSize.Height + extray);
area = area.Shrink(new Margin(0, 0, 0, alloc.Height + gapy));
}
else if ((chpack & PackSide.Left) != 0)
{
alloc = new Rect2i(area.Left, area.Top, child.LayoutResult.MinSize.Width + extrax, area.Height);
area = area.Shrink(new Margin(alloc.Width + gapx, 0, 0, 0));
}
else if ((chpack & PackSide.Right) != 0)
{
alloc = new Rect2i(area.Right - child.LayoutResult.MinSize.Width - extrax, area.Top, child.LayoutResult.MinSize.Width + extrax, area.Height);
area = area.Shrink(new Margin(0, 0, alloc.Width + gapx, 0));
}
else //PackTop or packing not set which defaults to top
{
alloc = new Rect2i(area.Left, area.Top, area.Width, child.LayoutResult.MinSize.Height + extray);
area = area.Shrink(new Margin(0, alloc.Height + gapy, 0, 0));
}
// child.LayoutResult.FinalPos = StickRectangle(alloc, child.LayoutResult.MinSize, FinalStick(child));
}
}
virtual public void RefreshChildren()
{
SizerObject.RecursiveCalcLayoutInfo(this);
SizerObject.RecursiveCalcFinalPos(this, Size2i.Max(Bounds.Size, LayoutResult.MinSize));
// RecursiveLayoutChildren();
}