internal Util.WinForms.HitTestResult HitTest(PointT mouseLoc)
{
var mouseSS = ToShapeSpace(mouseLoc); // SS=Shape Space
var htRadiusSS = ToShapeSpace(HitTestRadius);
Util.WinForms.HitTestResult best = null;
bool bestSel = false;
int bestZOrder = 0;
foreach (IShapeWidget shapeW in WidgetsOnScreen(mouseLoc))
{
var shape = shapeW as Shape;
var result = shapeW.HitTest(mouseSS, htRadiusSS, GetSelType(shapeW as Shape));
if (result != null)
{
Debug.Assert(result.Shape == shapeW);
bool resultSel = shape == null || _selectedShapes.Contains(shape);
int zOrder = shape != null ? shape.HitTestZOrder : int.MaxValue;
// Prefer to hit test against an already-selected shape (unless
// it's a panel) or a non-Shape widget, otherwise the thing with
// the highest Z-order.
if (shape != null && shape.IsPanel)
{
resultSel = false;
}
if (best == null || (resultSel && !bestSel) || (bestSel == resultSel && bestZOrder < zOrder))
{
best = result;
bestSel = resultSel;
bestZOrder = zOrder;
}
}
}
return(best);
}
public override DoOrUndo DoubleClickAction(Util.WinForms.HitTestResult htr)
{
return(@do => {
var t = BoxType;
if (@do)
{
BoxType = (t == BoxType.Rect ? BoxType.Ellipse : t == BoxType.Ellipse ? BoxType.Borderless : BoxType.Rect);
}
else
{
BoxType = (t == BoxType.Rect ? BoxType.Borderless : t == BoxType.Borderless ? BoxType.Ellipse : BoxType.Rect);
}
});
}
public override DoOrUndo DragMoveAction(Util.WinForms.HitTestResult htr, VectorT amount)
{
if (htr == null || htr.MouseCursor == Cursors.SizeAll)
{
return(@do => {
_bbox = null;
var amount2 = @do ? amount : amount.Neg();
for (int i = 0; i < Points.Count; i++)
{
Points[i] = Points[i].Add(amount2);
}
});
}
return(null);
}
public override DoOrUndo DoubleClickAction(Util.WinForms.HitTestResult htr_)
{
var htr = (HitTestResult)htr_;
Arrowhead old = null;
if (htr.IsPointHit)
{
if (htr.PointOrSegment == 0)
{
return @do => {
if (@do)
{
old = FromArrow; FromArrow = NextArrow(FromArrow);
}
else
{
FromArrow = old;
}
}
}
;
else if (htr.PointOrSegment == Points.Count - 1)
{
return @do => {
if (@do)
{
old = ToArrow; ToArrow = NextArrow(ToArrow);
}
else
{
ToArrow = old;
}
}
}
;
}
else
{
// TODO: switch between curved and straight
}
return(null);
}
public override DoOrUndo DragMoveAction(Util.WinForms.HitTestResult htr_, VectorT amount)
{
var htr = htr_ as HitTestResult;
var rf = htr == null ? RF.Move : htr.ResizeFlags;
BoundingBox <float> old = null;
return(@do =>
{
if (@do)
{
old = _bbox.Clone();
Coord x1 = _bbox.X1 + ((rf & RF.Left) != 0 ? amount.X : 0);
Coord x2 = _bbox.X2 + ((rf & RF.Right) != 0 ? amount.X : 0);
Coord y1 = _bbox.Y1 + ((rf & RF.Top) != 0 ? amount.Y : 0);
Coord y2 = _bbox.Y2 + ((rf & RF.Bottom) != 0 ? amount.Y : 0);
_bbox = new BoundingBox <float>(x1, y1, x2, y2);
_bbox.Normalize();
}
else
{
_bbox = old;
}
});
}