Is there a WPF "WrapGrid" control available or an easy way to create one?

Question

Essentially I want a wrapPanel, but I would like items to snap to a grid rather than be pressed up to the left, so I can get a nice uniform looking grid, that automatically consumes available space.

WrapPanel handles the resize part. WPF.Contrib.AutoGrid handles a nice automatic grid.

Anyone got a control that combines them?

My use case is I have a series of somewhat irregularly shaped controls. I would like them to appear in nice columns so the wrap panel should snap to the next "tabstop" when placing a control

Answer 1

Here is some code that I whipped up based on some of the other controls that are close. It does a decent job of doing the layout, although it has an issue where grand-child controls do not fill up all their available space.

  protected override Size ArrangeOverride(Size finalSize)
    {
        double rowY = 0;
        int col = 0;
        double currentRowHeight = 0;


        foreach (UIElement child in Children)
        {
            var initialSize = child.DesiredSize;
            int colspan  = (int) Math.Ceiling(initialSize.Width/ ColumnSize);
            Console.WriteLine(colspan);
             double width = colspan * ColumnSize;



            if (col > 0 && (col * ColumnSize) + width > constrainedSize.Width)
            {
                rowY += currentRowHeight;
                col = 0;
                currentRowHeight = 0;
            }


            var childRect = new Rect(col * ColumnSize, rowY, width, initialSize.Height);
            child.Arrange(childRect);
            currentRowHeight = Math.Max(currentRowHeight, initialSize.Height);
            col+=colspan;
        }

        return finalSize;
    }

    Size constrainedSize;

    protected override Size MeasureOverride(Size constraint)
    {
        constrainedSize = constraint;
        return base.MeasureOverride(constraint);
    }