private bool IsBounded(IEnumerable <object> items)
{
var oneItem = new object[1];
foreach (IPickingAdapter pickingAdapter in AdaptedControl.AsAll <IPickingAdapter>())
{
foreach (object item in items)
{
oneItem[0] = item;
Rectangle adapterBounds = pickingAdapter.GetBounds(oneItem);
if (!adapterBounds.IsEmpty)
{
return(true);
}
}
}
foreach (IPickingAdapter2 pickingAdapter in AdaptedControl.AsAll <IPickingAdapter2>())
{
foreach (object item in items)
{
oneItem[0] = item;
Rectangle adapterBounds = pickingAdapter.GetBounds(oneItem);
if (!adapterBounds.IsEmpty)
{
return(true);
}
}
}
return(false);
}
/// <summary>
/// Performs custom actions on adaptable control MouseUp events; base method should
/// be called first</summary>
/// <param name="sender">Adaptable control</param>
/// <param name="e">Mouse event args</param>
protected override void OnMouseUp(object sender, MouseEventArgs e)
{
base.OnMouseUp(sender, e);
if (e.Button == MouseButtons.Left)
{
if (m_draggingAnnotations != null)
{
if (m_initiated)
{
ITransactionContext transactionContext = AdaptedControl.ContextAs <ITransactionContext>();
transactionContext.DoTransaction(
delegate
{
foreach (IItemDragAdapter itemDragAdapter in AdaptedControl.AsAll <IItemDragAdapter>())
{
itemDragAdapter.EndDrag();
}
}, "Drag Items".Localize());
m_initiated = false;
}
}
if (m_autoTranslateAdapter != null)
{
m_autoTranslateAdapter.Enabled = false;
}
}
}
private void control_MouseUp(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right && ((Control.ModifierKeys & Keys.Alt) == 0))
{
Point p = new Point(e.X, e.Y);
object target = null;
foreach (IPickingAdapter pickingAdapter in AdaptedControl.AsAll <IPickingAdapter>())
{
DiagramHitRecord hitRecord = pickingAdapter.Pick(p);
if (hitRecord.Item != null)
{
target = hitRecord.Item;
break;
}
}
// iter over IPickingAdapter
if (target == null)
{
foreach (IPickingAdapter2 pickingAdapter in AdaptedControl.AsAll <IPickingAdapter2>())
{
DiagramHitRecord hitRecord = pickingAdapter.Pick(p);
if (hitRecord.Item != null)
{
target = hitRecord.Item;
break;
}
}
}
object context = AdaptedControl.Context;
TriggeringLocation = p;
var commands = new List <object>(m_providers.GetCommands(context, target));
OnContextMenuOpening(commands);
Point screenP = AdaptedControl.PointToScreen(p);
m_commandService.RunContextMenu(commands, screenP);
}
}
private void control_MouseMove(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.None &&
AdaptedControl.Focused)
{
object pickedItem = null;
object pickedPart = null;
DiagramHitRecord hitRecord = null;
foreach (IPickingAdapter pickingAdapter in AdaptedControl.AsAll <IPickingAdapter>())
{
hitRecord = pickingAdapter.Pick(new Point(e.X, e.Y));
if (hitRecord.Item != null)
{
pickedItem = hitRecord.Item;
pickedPart = hitRecord.Part;
break;
}
}
if (pickedItem == null)
{
foreach (IPickingAdapter2 pickingAdapter in AdaptedControl.AsAll <IPickingAdapter2>())
{
hitRecord = pickingAdapter.Pick(new Point(e.X, e.Y));
if (hitRecord.Item != null)
{
pickedItem = hitRecord.Item;
pickedPart = hitRecord.Part;
break;
}
}
}
if (hitRecord.Item != m_hoverItem || hitRecord.Part != m_hoverPart ||
hitRecord.SubItem != m_hoverSubItem || hitRecord.SubPart != m_hoverSubPart)
{
StartHover(hitRecord);
}
}
}
/// <summary>
/// Performs custom actions when performing a mouse dragging operation</summary>
/// <param name="e">Mouse move event args</param>
protected override void OnDragging(MouseEventArgs e)
{
if (m_layoutContext != null &&
!m_isDragging)
{
ResetHotNode();
if (e.Button == MouseButtons.Left &&
((Control.ModifierKeys & Keys.Alt) == 0) &&
!AdaptedControl.Capture)
{
{
m_firstPoint = GdiUtil.InverseTransform(m_transformAdapter.Transform, FirstPoint);
m_mousePick = m_graphAdapter.Pick(FirstPoint);
if (m_mousePick.Node != null)
{
m_initiated = true;
foreach (IItemDragAdapter itemDragAdapter in AdaptedControl.AsAll <IItemDragAdapter>())
{
itemDragAdapter.BeginDrag(this);
}
AdaptedControl.Capture = true;
if (m_autoTranslateAdapter != null)
{
m_autoTranslateAdapter.Enabled = true;
}
}
}
}
}
if (m_draggingNodes != null)
{
AdaptedControl.Invalidate();
}
}
/// <summary>
/// Computes a rectangle bounding a collection of objects</summary>
/// <param name="items">Enumeration of objects to find bounds for</param>
/// <returns>Rectangle bounding a collection of objects</returns>
protected Rectangle GetBounds(IEnumerable <object> items)
{
Rectangle bounds = new Rectangle();
foreach (IPickingAdapter pickingAdapter in AdaptedControl.AsAll <IPickingAdapter>())
{
Rectangle adapterBounds = pickingAdapter.GetBounds(items);
if (!adapterBounds.IsEmpty)
{
bounds = bounds.IsEmpty ? adapterBounds : Rectangle.Union(bounds, adapterBounds);
}
}
foreach (IPickingAdapter2 pickingAdapter in AdaptedControl.AsAll <IPickingAdapter2>())
{
Rectangle adapterBounds = pickingAdapter.GetBounds(items);
if (!adapterBounds.IsEmpty)
{
bounds = bounds.IsEmpty ? adapterBounds : Rectangle.Union(bounds, adapterBounds);
}
}
return(bounds);
}
/// <summary>
/// Performs custom actions when ending a mouse dragging operation</summary>
/// <param name="e">Mouse event args</param>
protected override void OnEndDrag(MouseEventArgs e)
{
base.OnEndDrag(e);
if (m_draggingNodes != null && m_draggingNodes.Length > 0)
{
foreach (var draggingNode in m_draggingNodes)
{
ResetCustomStyle(draggingNode);
}
foreach (IItemDragAdapter itemDragAdapter in AdaptedControl.AsAll <IItemDragAdapter>())
{
itemDragAdapter.EndingDrag(); //call ourselves, too
}
var transactionContext = AdaptedControl.ContextAs <ITransactionContext>();
transactionContext.DoTransaction(delegate
{
foreach (IItemDragAdapter itemDragAdapter in AdaptedControl.AsAll <IItemDragAdapter>())
{
itemDragAdapter.EndDrag(); //call ourselves, too
}
}, "Drag Items".Localize());
if (m_autoTranslateAdapter != null)
{
m_autoTranslateAdapter.Enabled = false;
}
AdaptedControl.Invalidate();
}
m_draggingNodes = null;
m_newPositions = null;
m_oldPositions = null;
ResetCustomStyle(m_targetItem);
m_targetItem = null;
m_resizing = false;
AdaptedControl.Cursor = Cursors.Default;
}
/// <summary>
/// Performs custom actions when performing a mouse dragging operation</summary>
/// <param name="e">Mouse event args</param>
protected override void OnDragging(MouseEventArgs e)
{
if (m_layoutContext != null &&
m_draggingAnnotations == null)
{
if (e.Button == MouseButtons.Left &&
((Control.ModifierKeys & Keys.Alt) == 0) &&
!AdaptedControl.Capture)
{
{
m_mousePick = Pick(FirstPoint);
if (m_mousePick.Item != null)
{
m_initiated = true;
foreach (IItemDragAdapter itemDragAdapter in AdaptedControl.AsAll <IItemDragAdapter>())
{
itemDragAdapter.BeginDrag(this);
}
AdaptedControl.Capture = true;
if (m_autoTranslateAdapter != null)
{
m_autoTranslateAdapter.Enabled = true;
}
}
}
}
}
if (m_draggingAnnotations != null)
{
AdaptedControl.Invalidate();
}
}
/// <summary>
/// Raises the BeginDrag event and performs custom processing</summary>
/// <param name="e">A MouseEventArgs that contains the event data</param>
protected override void OnBeginDrag(MouseEventArgs e)
{
base.OnBeginDrag(e);
if (m_layoutContext != null && e.Button == MouseButtons.Left &&
((Control.ModifierKeys & Keys.Alt) == 0) &&
!AdaptedControl.Capture)
{
m_firstPoint = GdiUtil.InverseTransform(m_transformAdapter.Transform, FirstPoint);
m_mousePick = m_graphAdapter.Pick(FirstPoint);
if (CanDragging())
{
foreach (var itemDragAdapter in AdaptedControl.AsAll <IItemDragAdapter>())
{
if (itemDragAdapter != this)
{
itemDragAdapter.BeginDrag(this);
}
}
// drag all selected nodes, and any edges impinging on them
ActiveCollection <TNode> draggingNodes = new ActiveCollection <TNode>();
HashSet <TNode> nodes = new HashSet <TNode>();
foreach (var node in m_selectionContext.GetSelection <TNode>())
{
if (AllowDragging(node))
{
AddDragNode(node, draggingNodes, nodes);
}
}
m_draggingNodes = draggingNodes.GetSnapshot <TNode>();
if ((m_draggingNodes.Length == 1) && m_draggingNodes[0] == m_mousePick.Item)
{
if (m_mousePick.SubItem != null)
{
if (m_mousePick.SubItem.Is <TNode>()) // favor dragging sub item
{
m_draggingNodes[0] = m_mousePick.SubItem.Cast <TNode>();
}
if (m_mousePick.SubPart.Is <DiagramBorder>()) // sub-container resizing?
{
var borderPart = m_mousePick.SubPart.Cast <DiagramBorder>();
if (m_editableGraphContainer != null && m_editableGraphContainer.CanResize(m_mousePick.SubItem, borderPart))
{
m_firstBound = m_graphAdapter.GetLocalBound(m_mousePick.SubItem.As <TNode>());
m_resizing = true;
m_targetItem = m_mousePick.SubItem;
}
}
}
else if (m_mousePick.Part.Is <DiagramBorder>()) // then favor container resizing
{
var borderPart = m_mousePick.Part.Cast <DiagramBorder>();
if (m_editableGraphContainer != null && m_editableGraphContainer.CanResize(m_mousePick.Item, borderPart))
{
m_firstBound = m_graphAdapter.GetLocalBound(m_mousePick.Item.As <TNode>());
m_resizing = true;
m_targetItem = m_mousePick.Item;
}
}
}
m_newPositions = new Point[m_draggingNodes.Length];
m_oldPositions = new Point[m_draggingNodes.Length];
for (int i = 0; i < m_draggingNodes.Length; i++)
{
// Initialize m_newPositions in case the mouse up event occurs before
// a paint event, which can happen during rapid clicking.
Point currentLocation = m_draggingNodes[i].Bounds.Location;
m_newPositions[i] = currentLocation;
m_oldPositions[i] = currentLocation;
}
AdaptedControl.Capture = true;
if (m_autoTranslateAdapter != null)
{
m_autoTranslateAdapter.Enabled = true;
}
}
}
}