/* Bewegt ein bereits bestehendes Item item an eine andere Position (x,y) */
public void moveItem(UIElement item, int x, int y)
{
Size s = GetTileSize();
double dX = x * s.Width;
double dY = y * s.Height;
GridCanvas.SetLeft(item, dX);
GridCanvas.SetTop(item, dY);
SnapToGrid(item);
item.InvalidateVisual();
InvalidateVisual();
}
/** Der (hypersensible) MouseClicked Eventhandler (setzt die isSelected-Property) **/
protected override void OnPreviewMouseDown(MouseButtonEventArgs e)
{
base.OnPreviewMouseDown(e);
GridCanvas designer = VisualTreeHelper.GetParent(this) as GridCanvas;
if (designer != null)
{
if ((Keyboard.Modifiers &
(ModifierKeys.Shift | ModifierKeys.Control)) != ModifierKeys.None)
{
this.IsSelected = !this.IsSelected;
}
else
{
if (!this.IsSelected)
{
designer.DeselectAll();
this.IsSelected = true;
}
}
}
e.Handled = false;
}
/** Der MouseDrag Eventhandler für das GridThumb **/
private void GridThumb_DragDelta(object sender, DragDeltaEventArgs e)
{
Console.WriteLine("GridThumb");
GridItem item = this.DataContext as GridItem;
if (item != null)
{
GridCanvas GridC = VisualTreeHelper.GetParent(VisualTreeHelper.GetParent(VisualTreeHelper.GetParent(this))) as GridCanvas;
Point p = new Point(GridCanvas.GetLeft(item) + e.HorizontalChange, GridCanvas.GetTop(item) + e.VerticalChange);
Coordinate coord = null;
if (p != null) // wenn objekt gelöscht wurde, wärend wir verschieben ist p == null
{
coord = GridC.CalcGridCoord(p);
// GO server..
if (coord != null)
{
ClientServerUtil.getInstance().moveItem(item.instanceId, coord.Item1, coord.Item2);
#if DEBUG
Console.WriteLine("\nObject Moved:");
#endif
}
}
}
}
