private void DistributeVertical_Executed(object sender, RoutedEventArgs e)
{
var selectedItems = from item in SelectionService.CurrentSelection.OfType <DesignerItem>()
where item.ParentID == Guid.Empty
let itemTop = Canvas.GetTop(item)
orderby itemTop
select item;
if (selectedItems.Count() > 1)
{
double top = Double.MaxValue;
double bottom = Double.MinValue;
double sumHeight = 0;
foreach (DesignerItem item in selectedItems)
{
top = Math.Min(top, Canvas.GetTop(item));
bottom = Math.Max(bottom, Canvas.GetTop(item) + item.Height);
sumHeight += item.Height;
}
double distance = Math.Max(0, (bottom - top - sumHeight) / (selectedItems.Count() - 1));
double offset = Canvas.GetTop(selectedItems.First());
foreach (DesignerItem item in selectedItems)
{
double delta = offset - Canvas.GetTop(item);
foreach (DesignerItem di in SelectionService.GetGroupMembers(item))
{
Canvas.SetTop(di, Canvas.GetTop(di) + delta);
}
offset = offset + item.Height + distance;
}
}
}
private void DistributeHorizontal_Executed(object sender, RoutedEventArgs e)
{
var selectedItems = from item in SelectionService.CurrentSelection.OfType <DesignerItem>()
where item.ParentID == Guid.Empty
let itemLeft = Canvas.GetLeft(item)
orderby itemLeft
select item;
if (selectedItems.Count() > 1)
{
double left = Double.MaxValue;
double right = Double.MinValue;
double sumWidth = 0;
foreach (DesignerItem item in selectedItems)
{
left = Math.Min(left, Canvas.GetLeft(item));
right = Math.Max(right, Canvas.GetLeft(item) + item.Width);
sumWidth += item.Width;
}
double distance = Math.Max(0, (right - left - sumWidth) / (selectedItems.Count() - 1));
double offset = Canvas.GetLeft(selectedItems.First());
foreach (DesignerItem item in selectedItems)
{
double delta = offset - Canvas.GetLeft(item);
foreach (DesignerItem di in SelectionService.GetGroupMembers(item))
{
Canvas.SetLeft(di, Canvas.GetLeft(di) + delta);
}
offset = offset + item.Width + distance;
}
}
}
private void AlignRight_Executed(object sender, RoutedEventArgs e)
{
var selectedItems = from item in SelectionService.CurrentSelection.OfType <DesignerItem>()
where item.ParentID == Guid.Empty
select item;
if (selectedItems.Count() > 1)
{
double right = Canvas.GetLeft(selectedItems.First()) + selectedItems.First().Width;
foreach (DesignerItem item in selectedItems)
{
double delta = right - (Canvas.GetLeft(item) + item.Width);
foreach (DesignerItem di in SelectionService.GetGroupMembers(item))
{
Canvas.SetLeft(di, Canvas.GetLeft(di) + delta);
}
}
}
}
private void AlignBottom_Executed(object sender, RoutedEventArgs e)
{
var selectedItems = from item in SelectionService.CurrentSelection.OfType <DesignerItem>()
where item.ParentID == Guid.Empty
select item;
if (selectedItems.Count() > 1)
{
double bottom = Canvas.GetTop(selectedItems.First()) + selectedItems.First().Height;
foreach (DesignerItem item in selectedItems)
{
double delta = bottom - (Canvas.GetTop(item) + item.Height);
foreach (DesignerItem di in SelectionService.GetGroupMembers(item))
{
Canvas.SetTop(di, Canvas.GetTop(di) + delta);
}
}
}
}
protected override void OnKeyDown(KeyEventArgs e)
{
base.OnKeyDown(e);
if (e.Key == Key.Left || e.Key == Key.Right || e.Key == Key.Up || e.Key == Key.Down)
{
object originalSource = e.OriginalSource;
if (originalSource is DesignerItem)
{
var movementViewModel = new MovementViewModel();
e.Handled = true;
var item = originalSource as DesignerItem;
if (item.ParentID != Guid.Empty)
{
var groupMembers = selectionService.GetGroupMembers(item).OfType <DesignerItem>();
bool leftConstrained = groupMembers.Any(designerItem => Canvas.GetLeft(designerItem) == 0);
bool topConstrained = groupMembers.Any(designerItem => Canvas.GetTop(designerItem) == 0);
if (e.Key == Key.Left && leftConstrained ||
e.Key == Key.Up && topConstrained)
{
return;
}
foreach (DesignerItem designerItem in groupMembers)
{
movementViewModel.HandleKeyDown(e, designerItem);
}
}
else
{
movementViewModel.HandleKeyDown(e, item);
}
}
}
}