protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
if (_readOnly)
{
return;
}
hideSelectorList();
int x = e.X;
int y = e.Y;
int nh = 1;
float yOffset = 0;
float xOffset = this.AutoScrollPosition.X;
SizeF size = mathExp.ExpSize;
if (size.Height > 0)
{
while (y > (nh * (size.Height + 8)))
{
yOffset += (size.Height + 8);
xOffset -= this.ClientSize.Width;
nh++;
}
y -= (int)yOffset;
x -= (int)xOffset;
}
MathNode hit = mathExp.HitTest(new PointF(x, y));
if (hit != null)
{
mathExp.SetFocus(hit);
}
else
{
mathExp.SetFocus(null);
}
this.Refresh();
if (e.Button == MouseButtons.Right)
{
MathNode selectedNode = Root.FocusedNode;
ContextMenu cm = new ContextMenu();
MenuItem mi;
BinOperatorNode bin = selectedNode as BinOperatorNode;
if (bin != null)
{
BinOperatorNode bin2 = bin[1] as BinOperatorNode;
if (bin2 != null)
{
//modify it from {0} b {b2} to
//{0} b {b2[0]} b2 {b2[1]}
//new b[1] = {b2[0]}
//new b2[0] = new b => {0} b {b2[0]}
//new b2[1] = {b2[1]}
mi = new MenuItemWithBitmap("Separate", mnu_separate, Resource1._separate.ToBitmap());
cm.MenuItems.Add(mi);
}
}
if (OnFinish != null)
{
if (cm.MenuItems.Count > 0)
{
cm.MenuItems.Add("-");
}
mi = new MenuItemWithBitmap("Finish", OnFinish, Resource1._ok.ToBitmap());
cm.MenuItems.Add(mi);
}
if (OnCancel != null)
{
mi = new MenuItemWithBitmap("Cancel", OnCancel, Resource1._cancel.ToBitmap());
cm.MenuItems.Add(mi);
}
if (OnCreateCompound != null)
{
}
//
if (cm.MenuItems.Count > 0)
{
cm.Show(this, new Point(e.X, e.Y));
}
}
}