/// <summary>
/// End of selection
/// </summary>
/// <param name="e"></param>
public override bool OnMouseUp(VCItem sender, ItemMouseEventArgs e)
{
if (enabled || IsSelecting)
{
if (IsSelecting)
{
IsSelecting = false;
container.Invalidate();
if (RectangleSelected != null)
{
var bounds = SelectionBounds;
if (!bounds.IsEmpty)
{
RectangleSelected(this, new RectangleEventArgs(bounds.Round()));
}
}
}
return(true);
}
else
{
return(base.OnMouseUp(sender, e));
}
}
/// <summary>
/// Start the selection at the given point.
/// </summary>
public void Start(PointF pt, bool clearSelection)
{
selStart = pt;
selEnd = pt;
selecting = true;
if (clearSelection)
{
// Clear selection
container.SelectedItems.Clear();
}
// Record current selection
startSelection = new List <VCItemPlacement>(container.SelectedItems);
// Select appropriate items
UpdateSelection(SelectionBounds);
container.Invalidate();
}
/// <summary>
/// Pass mouse down to appropriate item
/// </summary>
/// <param name="e"></param>
public override bool OnMouseDown(VCItem sender, ItemMouseEventArgs e)
{
var pt = e.Location;
var placement = Find(pt, null);
// Can placement be resized?
if ((placement != null) && (placement != activePlacement) && !CanResize(placement))
{
// No, it cannot be resized
placement = null;
}
HitSide side = HitSide.None;
if (placement != null)
{
side = CalcHitSide(placement, pt);
if (side == HitSide.None)
{
placement = null;
}
}
if (placement != null)
{
activePlacement = placement;
startBounds = placement.Bounds;
startMousePt = pt;
startSide = side;
resizing = true;
container.Invalidate();
return(true);
}
else
{
// Pass event on
return(base.OnMouseDown(sender, e));
}
}
/// <summary>
/// Default ctor
/// </summary>
public SelectionManager(IVCItemContainer container, Predicate <VCItemPlacement> canSelect)
{
this.container = container;
this.canSelect = canSelect;
container.SelectedItems.Changed += (s, e) => container.Invalidate();
}