private static int GetIndex(this GridSplitter gridSplitter)
{
var index = -1;
switch (gridSplitter.GetResizeDirection())
{
case GridResizeDirection.Columns:
index = (int)gridSplitter.GetValue(Grid.ColumnProperty);
break;
case GridResizeDirection.Rows:
index = (int)gridSplitter.GetValue(Grid.RowProperty);
break;
}
return(index);
}
private static IEnumerable <DefinitionBase> GetDefinitions(this Grid grid, GridSplitter gridSplitter)
{
var definitions = Enumerable.Empty <DefinitionBase>();
switch (gridSplitter.GetResizeDirection())
{
case GridResizeDirection.Columns:
definitions = grid.ColumnDefinitions;
break;
case GridResizeDirection.Rows:
definitions = grid.RowDefinitions;
break;
}
return(definitions);
}
private static GridResizeBehavior GetResizeBehavior(this GridSplitter gridSplitter)
{
// The following logic is based on documentation at: https://msdn.microsoft.com/en-us/library/system.windows.controls.gridresizebehavior(v=vs.110).aspx
var resizeBehavior = gridSplitter.ResizeBehavior;
if (resizeBehavior == GridResizeBehavior.BasedOnAlignment)
{
if (gridSplitter.GetResizeDirection() == GridResizeDirection.Rows)
{
switch (gridSplitter.VerticalAlignment)
{
case VerticalAlignment.Top:
resizeBehavior = GridResizeBehavior.PreviousAndCurrent;
break;
case VerticalAlignment.Bottom:
resizeBehavior = GridResizeBehavior.CurrentAndNext;
break;
case VerticalAlignment.Center:
case VerticalAlignment.Stretch:
resizeBehavior = GridResizeBehavior.PreviousAndNext;
break;
}
}
else
{
switch (gridSplitter.HorizontalAlignment)
{
case HorizontalAlignment.Left:
resizeBehavior = GridResizeBehavior.PreviousAndCurrent;
break;
case HorizontalAlignment.Right:
resizeBehavior = GridResizeBehavior.CurrentAndNext;
break;
case HorizontalAlignment.Center:
case HorizontalAlignment.Stretch:
resizeBehavior = GridResizeBehavior.PreviousAndNext;
break;
}
}
}
return(resizeBehavior);
}