public override sw.Size GetPreferredSize(sw.Size constraint)
{
var size = PreferredSize;
if (double.IsNaN(size.Width) || double.IsNaN(size.Height))
{
sw.Size baseSize;
if (UseContentSize)
{
var padding = border.Padding.Size().Add(ContainerControl.Margin.Size());
var contentSize = constraint.Subtract(padding);
var preferredSize = content.GetPreferredSize(contentSize);
baseSize = new sw.Size(Math.Max(0, preferredSize.Width + padding.Width), Math.Max(0, preferredSize.Height + padding.Height));
}
else
{
baseSize = base.GetPreferredSize(constraint);
}
if (double.IsNaN(size.Width))
{
size.Width = baseSize.Width;
}
if (double.IsNaN(size.Height))
{
size.Height = baseSize.Height;
}
}
return(new sw.Size(Math.Max(0, size.Width), Math.Max(0, size.Height)));
}
public override sw.Size GetPreferredSize(sw.Size constraint)
{
var size = PreferredSize;
var margin = ContainerControl.Margin.Size();
if (double.IsNaN(size.Width) || double.IsNaN(size.Height))
{
sw.Size baseSize;
if (UseContentSize)
{
var padding = border.Padding.Size();
var childConstraint = constraint.Subtract(padding).Subtract(margin);
baseSize = content.GetPreferredSize(childConstraint);
baseSize = baseSize.Add(padding); // we add margin back at end
}
else
{
baseSize = base.GetPreferredSize(constraint).Subtract(margin);
}
size = size.IfNaN(baseSize);
}
size = size.Max(ContainerControl.GetMinSize());
size = size.Add(margin);
return(size);
}
public override sw.Size GetPreferredSize(sw.Size constraint)
{
if (columnScale == null || columnScale.Length == 0 || rowScale == null || rowScale.Length == 0)
{
return(ContainerControl.GetMinSize().Add(ContainerControl.Margin.Size()));
}
var margin = ContainerControl.Margin.Size();
var size = PreferredSize;
if (double.IsNaN(size.Width) || double.IsNaN(size.Height))
{
var padding = border.Padding.Size();
var widths = new double[columnScale.Length];
var heights = new double[rowScale.Length];
var scaledCells = new Size();
var childConstraint = constraint.Subtract(padding);
childConstraint = childConstraint.Subtract(margin);
// check non-scaled rows/columns first with preferred size
for (int y = 0; y < rowScale.Length; y++)
{
var cellConstraint = childConstraint;
var hasRowScale = IsRowScaled(y);
if (hasRowScale)
{
scaledCells.Height++;
}
else
{
cellConstraint.Height = double.PositiveInfinity;
}
for (int x = 0; x < widths.Length; x++)
{
var hasColScale = IsColumnScaled(x);
if (hasColScale && y == 0)
{
scaledCells.Width++;
}
if (!hasColScale)
{
cellConstraint.Width = double.PositiveInfinity;
}
if (!hasColScale || !hasRowScale)
{
var control = controls[x, y];
var childControl = control.GetWpfFrameworkElement();
if (childControl != null && control.Visible)
{
var preferredSize = childControl.GetPreferredSize(cellConstraint);
if (!hasColScale)
{
widths[x] = Math.Max(widths[x], preferredSize.Width);
}
if (!hasRowScale)
{
heights[y] = Math.Max(heights[y], preferredSize.Height);
}
}
else
{
var cellMargins = GetMargins(x, y);
widths[x] = Math.Max(widths[x], cellMargins.Horizontal());
heights[y] = Math.Max(heights[y], cellMargins.Vertical());
}
}
}
}
// find remaning size for each cell
childConstraint = childConstraint.Subtract(new sw.Size(widths.Sum(), heights.Sum()));
childConstraint.Width /= scaledCells.Width;
childConstraint.Height /= scaledCells.Height;
// check scaled rows/columns based on remaining size
for (int y = 0; y < rowScale.Length; y++)
{
var cellConstraint = childConstraint;
var hasRowScale = IsRowScaled(y);
if (!hasRowScale)
{
cellConstraint.Height = double.PositiveInfinity;
}
for (int x = 0; x < widths.Length; x++)
{
var hasColScale = IsColumnScaled(x);
if (!hasColScale)
{
cellConstraint.Width = double.PositiveInfinity;
}
if (hasColScale || hasRowScale)
{
var control = controls[x, y];
var childControl = control.GetWpfFrameworkElement();
if (childControl != null && control.Visible)
{
var preferredSize = childControl.GetPreferredSize(cellConstraint);
widths[x] = Math.Max(widths[x], preferredSize.Width);
heights[y] = Math.Max(heights[y], preferredSize.Height);
}
else
{
var cellMargins = GetMargins(x, y);
widths[x] = Math.Max(widths[x], cellMargins.Horizontal());
heights[y] = Math.Max(heights[y], cellMargins.Vertical());
}
}
}
}
var preferredContentSize = new sw.Size(widths.Sum(), heights.Sum());
preferredContentSize = preferredContentSize.Add(padding);
size = size.IfNaN(preferredContentSize);
}
size = size.Max(ContainerControl.GetMinSize());
size = size.Add(margin);
//System.Diagnostics.Debug.WriteLine("Size: {0}, actual: {1}", size, ContainerControl.GetSize());
return(size);
}
