public void MouseMove(Point p)
{
var extents = GetExtents(lineStart, p);
if (lineEnd != Point.Empty)
{
var oldExtents = GetExtents(lineStart, lineEnd);
extents = Rectangle.Union(oldExtents, extents);
}
lineEnd = p;
validConnection = false;
var obj = view.HitTest(p);
if (obj is Pin)
{
validConnection = (obj as Pin).Flow == Flow.InFlow ^ pin.Flow == Flow.InFlow;
}
diagram.Invalidate(extents);
}
protected override void OnMouseDown(MouseEventArgs e)
{
var mouse = MouseZoom(e.Location);
var obj = view.HitTest(mouse);
if (obj is Shape)
{
if (ModifierKeys == Keys.Control)
{
Debug.WriteLine("toggling object");
View.Selection.Toggle(obj);
Invalidate();
}
else if (ModifierKeys == Keys.None)
{
View.Selection.Select(obj);
if (!ReadOnly)
{
StartShapeDrag((Shape)obj, mouse);
}
Invalidate();
}
}
else if (obj is Pin && !ReadOnly && ModifierKeys == Keys.None)
{
rubberBand = new RubberBand(this, view, obj as Pin);
}
else if (obj is Segment && !ReadOnly)
{
var connector = (obj as Segment).Connector;
if (ModifierKeys == Keys.Control)
{
View.Selection.Toggle(connector);
Invalidate();
}
else if (ModifierKeys == Keys.None)
{
View.Selection.Select(connector);
StartSegmentDrag(mouse, (obj as Segment));
Invalidate();
}
}
else
{
// User clicked on background
if (ModifierKeys == Keys.Control)
{
selectionFrame = new SelectionFrame(PointToScreen(e.Location), BackColor);
}
else if (ModifierKeys == Keys.None)
{
if (View.Selection.Count != 0)
{
Invalidate();
View.Selection.Clear();
}
panning = true;
panClick = mouse;
minLeft = Math.Min(0, Parent.Width - Width);
minTop = Math.Min(0, Parent.Height - Height);
}
}
}
