public void RegisterDragActive(DragItem d, DragHandleAnchor excludePositionAnchor)
{
if (excludePositionAnchor != this.PositionAnchor)
{
this.UpdateBoxLocation(d);
}
}
protected override DragHandleAnchor SetCursor(Point point, ImageBox box)
{
Cursor cursor = Cursors.Default;
DragHandleAnchor handleAnchor = DragHandleAnchor.None;
if (Selected)
{
var handle = HitTest(point);
if (handle != null)
{
handleAnchor = handle.Anchor;
if (handleAnchor != DragHandleAnchor.None && handle.Enabled)
{
_selectHandle = handle;
switch (handleAnchor)
{
case DragHandleAnchor.TopLeft:
cursor = Cursors.SizeAll;
break;
case DragHandleAnchor.MiddleCenter:
cursor = Cursors.SizeAll;
break;
default:
throw new ArgumentOutOfRangeException();
}
}
}
}
box.Cursor = cursor;
return(handleAnchor);
}
public ResizeBox(DragHandleAnchor positionAnchor, System.Windows.Forms.Control parent)
{
this.Name = string.Format("{0}_resize_{1}", parent.Name, positionAnchor.ToString());
this.Width = CustomControl.ResizeBox;
this.Height = CustomControl.ResizeBox;
this.Location = new System.Drawing.Point(0, 0);
this.BackColor = SystemColors.MenuHighlight;
this.PositionAnchor = positionAnchor;
}
public ResizeBox(DragHandleAnchor positionAnchor, System.Windows.Forms.Control parent)
{
this.Name = string.Format("{0}_resize_{1}", parent.Name, positionAnchor.ToString());
this.Width = CustomControl.ResizeBox;
this.Height = CustomControl.ResizeBox;
this.Location = new System.Drawing.Point(0, 0);
this.BackColor = SystemColors.MenuHighlight;
this.PositionAnchor = positionAnchor;
}
public void UpdateLocationBoxResize(DragItem dragItem, DragHandleAnchor excludePositionAnchor)
{
rTopLeft.RegisterDragActive(dragItem, excludePositionAnchor);
rTopCenter.RegisterDragActive(dragItem, excludePositionAnchor);
rTopRight.RegisterDragActive(dragItem, excludePositionAnchor);
rMiddleLeft.RegisterDragActive(dragItem, excludePositionAnchor);
rMiddleRight.RegisterDragActive(dragItem, excludePositionAnchor);
rBottomLeft.RegisterDragActive(dragItem, excludePositionAnchor);
rBottomRight.RegisterDragActive(dragItem, excludePositionAnchor);
rBottomCenter.RegisterDragActive(dragItem, excludePositionAnchor);
}
internal override void MouseDown(MouseEventArgs e, ImageBox box)
{
if (e.Button == MouseButtons.Left)
{
_isLeftMouseDown = true;
_leftMouseDownAnchor = SetCursor(e.Location, box);
_lastRoiRegion = Rect;
_lastMousePoint = e.Location;
_lastImagePoint = Rect.Location;
box.Invalidate();
}
}
private void StartResize(DragHandleAnchor anchor)
{
if (this.IsMovingSelection || this.IsResizingSelection)
{
throw new InvalidOperationException("A move or resize action is currently being performed.");
}
var e = new CancelEventArgs();
this.OnSelectionResizing(e);
if (!e.Cancel)
{
this.ResizeAnchor = anchor;
this.PreviousSelectionRegion = this.SelectionRegion;
this.IsResizingSelection = true;
}
}
internal override void MouseDown(MouseEventArgs e, ImageBox box)
{
if (e.Button == MouseButtons.Left)
{
_isLeftMouseDown = true;
_leftMouseDownAnchor = SetCursor(e.Location, box);
_lastMousePoint = e.Location;
if (_leftMouseDownAnchor == DragHandleAnchor.TopLeft)
{
_lastImagePoint = GetPt(_selectHandle.Uid);
}
else if (_leftMouseDownAnchor == DragHandleAnchor.MiddleCenter)
{
_lastPolygonPts.Clear();
foreach (var keyVal in _polygonPts)
{
_lastPolygonPts.Add(keyVal.Key, keyVal.Value);
}
}
box.Invalidate();
}
}
public DragHandle(DragHandleAnchor anchor)
: this()
{
this.Anchor = anchor;
}
private void StartResize(DragHandleAnchor anchor)
{
CancelEventArgs e;
if (this.IsMoving || this.IsResizing)
{
throw new InvalidOperationException("A move or resize action is currently being performed.");
}
e = new CancelEventArgs();
this.OnSelectionResizing(e);
if (!e.Cancel)
{
this.ResizeAnchor = anchor;
this.PreviousSelectionRegion = this.SelectionRegion;
this.IsResizing = true;
}
}
public DragHandle this[DragHandleAnchor index]
{
get { return(_items[index]); }
}
public DragHandle(DragHandleAnchor anchor)
{
Anchor = anchor;
}
public void RegisterDragActive(DragItem d, DragHandleAnchor excludePositionAnchor)
{
if (excludePositionAnchor != this.PositionAnchor)
this.UpdateBoxLocation(d);
}
public void UpdateLocationBoxResize(DragItem dragItem, DragHandleAnchor excludePositionAnchor)
{
rTopLeft.RegisterDragActive(dragItem, excludePositionAnchor);
rTopCenter.RegisterDragActive(dragItem, excludePositionAnchor);
rTopRight.RegisterDragActive(dragItem, excludePositionAnchor);
rMiddleLeft.RegisterDragActive(dragItem, excludePositionAnchor);
rMiddleRight.RegisterDragActive(dragItem, excludePositionAnchor);
rBottomLeft.RegisterDragActive(dragItem, excludePositionAnchor);
rBottomRight.RegisterDragActive(dragItem, excludePositionAnchor);
rBottomCenter.RegisterDragActive(dragItem, excludePositionAnchor);
}
public void AddCustomDragHandle(DragHandleAnchor anchor)
{
_items.Add(anchor, new DragHandle(anchor));
}
