public bool MouseUp(object sender, MouseEventArgs e)
{
if (e.Button != MouseButtons.Left)
{
return(false);
}
bool handled = false;
if (_creating)
{
if (_creatingEle.IsValid())
{
_shapeList.Add(_creatingEle);
ShapeCreatedEvt(_creatingEle);
}
_creating = false;
_creatingEle = null;
_vb.Invalidate();
handled = true;
}
if (_cmd != null)
{
_cmd.EndCmd();
handled = true;
}
_cmd = null;
return(handled);
}
public bool MouseDown(object sender, MouseEventArgs e)
{
if (e.Button != MouseButtons.Left)
{
return(false);
}
bool handled = false;
_mouseDownPos = new Point(e.X, e.Y);
var p = new Point(e.X, e.Y);
if (CurrentInteractContext == InteractContext.Create && NewElementType != null)
{
_creatingEle = CreateNewElement(NewElementType, p, _vb.matClientToImage);
ShapeCreatingEvt(_creatingEle);
_creating = true;
NewElementType = null;
handled = true;
}
else
{
// first check if we can pick ctrl pt of selected items
var ctrlP = PickCtrlPts(Client2Img(p));
if (ctrlP != null)
{
_cmd = new DragCtrlPtCommand(ctrlP.Item1, ctrlP.Item2, p, this);
}
else
{
var shape = PickShape(p);
if (shape != null)
{
if (_selection.IsSelected(shape))
{
// move
_cmd = new MoveCommand(shape, p, this);
}
else
{
_selection.ClearSelection();
_selection.AddToSelection(shape);
}
handled = true;
}
else
{
if (_selection.SelectedShapes.Count > 0)
{
_selection.ClearSelection();
handled = true;
}
}
_vb.Invalidate();
}
}
return(handled);
}
private void OnShapeChanged_Undo(Shape shape, ManipCommand cmd)
{
var undoEvt = new ShapeEvent();
undoEvt.shape = shape;
undoEvt.EvtType = ShapeEvent.ShapeEventType.Change;
undoEvt.SnapshotData = cmd.InitSnapshot;
PushEvent(undoEvt);
}