void tap(UITapGestureRecognizer gr)
{
CGPoint point = gr.LocationInView(this);
this.selectedLine = lineAtPoint(point);
// If we just tapped, remove all lines in process
// so that a tap does not result in a new line
linesInProcess.Clear();
if (selectedLine != null)
{
this.BecomeFirstResponder();
// Grab the menu controller
UIMenuController menu = UIMenuController.SharedMenuController;
// Create a new "Delete" UIMenuItem
UIMenuItem deleteItem = new UIMenuItem("Delete", new Selector("deleteLine:"));
menu.MenuItems = new UIMenuItem[] { deleteItem };
// Tell the menu item where it should come from and show it
menu.SetTargetRect(new CGRect(point.X, point.Y, 2, 2), this);
menu.SetMenuVisible(true, true);
UIGestureRecognizer[] grs = this.GestureRecognizers;
foreach (UIGestureRecognizer gestRec in grs)
{
if (gestRec.GetType() != new UITapGestureRecognizer().GetType())
{
gestRec.Enabled = false;
}
}
}
else
{
// Hide the menu if no line is selected
UIMenuController menu = UIMenuController.SharedMenuController;
menu.SetMenuVisible(false, true);
UIGestureRecognizer[] grs = this.GestureRecognizers;
foreach (UIGestureRecognizer gestRec in grs)
{
if (gestRec.GetType() != new UITapGestureRecognizer().GetType())
{
gestRec.Enabled = true;
}
}
}
this.SetNeedsDisplay();
}
void swipe(UISwipeGestureRecognizer gr)
{
linesInProcess.Clear();
this.BecomeFirstResponder();
// Grab the menu controller
UIMenuController menu = UIMenuController.SharedMenuController;
// Create buttons
UIMenuItem red = new UIMenuItem("Red", new Selector("red:"));
UIMenuItem green = new UIMenuItem("Green", new Selector("green:"));
UIMenuItem blue = new UIMenuItem("Blue", new Selector("blue:"));
menu.MenuItems = new UIMenuItem[] { red, green, blue };
// Tell the menu where it should come from and show it
menu.SetTargetRect(new CGRect(0, 0, UIScreen.MainScreen.Bounds.Width, UIScreen.MainScreen.Bounds.Height), this);
menu.SetMenuVisible(true, true);
}