private void OnMouseMove(Object s, MouseEventArgs e)
{
// What item are we over?
int newMouseItem = ItemFromPoint(new Point(e.X, e.Y));
// Dont worry if the mouse is still on the same item.
if (newMouseItem != currentMouseItem)
{
// Draw the menu by un-highlighting the old and highlighting the new.
using (Graphics g = popupControl.CreateGraphics())
{
if (currentMouseItem != -1)
{
DrawMenuItem(g, currentMouseItem, false);
}
if (newMouseItem != -1)
{
DrawMenuItem(g, newMouseItem, true);
}
}
currentMouseItem = newMouseItem;
StartTimer(newMouseItem);
}
// Do we need to pass the mouse move along?
if (MouseMove != null)
{
// Convert the mouse co-ordinates relative to the associated control (form).
MouseMove(this, CreateParentMouseArgs(e));
}
}
// Show this context menu at the specified control-relative co-ordinates.
public void Show(Control control, Point pos)
{
associatedControl = control;
currentMouseItem = -1; // Not over anything
popupControl = new PopupControl();
// We need the following events from popupControl.
popupControl.MouseMove +=new MouseEventHandler(OnMouseMove);
popupControl.MouseDown +=new MouseEventHandler(OnMouseDown);
popupControl.Paint +=new PaintEventHandler(popupControl_Paint);
OnPopup(EventArgs.Empty);
// Figure out where we need to put the popup and its size.
Point pt = control.PointToScreen(new Point(0,0));
Rectangle rcWork = Screen.PrimaryScreen.WorkingArea;
using (Graphics g = popupControl.CreateGraphics())
{
Size size = MeasureItemBounds(g);
size.Height -= 1;
//align it to control
if (pt.X < rcWork.Left)
{
pt.X += size.Width;
}
if (pt.X > rcWork.Right - size.Width)
{
pt.X -= size.Width;
}
if (pt.Y < rcWork.Top)
{
pt.Y += size.Height;
}
if (pt.Y > rcWork.Bottom - size.Height)
{
pt.Y -= size.Height;
}
//add offset pos
pt.X += pos.X;
pt.Y += pos.Y;
//ensure that it is completely visible on screen
if (pt.X < rcWork.Left)
{
pt.X = rcWork.Left;
}
if (pt.X > rcWork.Right - size.Width)
{
pt.X = rcWork.Right - size.Width;
}
if (pt.Y < rcWork.Top)
{
pt.Y = rcWork.Top;
}
if (pt.Y > rcWork.Bottom + size.Height)
{
pt.Y = rcWork.Bottom - size.Height;
}
popupControl.Bounds = new Rectangle( pt, size);
}
popupControl.Show();
}
// Show this context menu at the specified control-relative co-ordinates.
public void Show(Control control, Point pos)
{
associatedControl = control;
currentMouseItem = -1; // Not over anything
popupControl = new PopupControl();
// We need the following events from popupControl.
popupControl.MouseMove += new MouseEventHandler(OnMouseMove);
popupControl.MouseDown += new MouseEventHandler(OnMouseDown);
popupControl.Paint += new PaintEventHandler(popupControl_Paint);
OnPopup(EventArgs.Empty);
// Figure out where we need to put the popup and its size.
Point pt = control.PointToScreen(new Point(0, 0));
Rectangle rcWork = Screen.PrimaryScreen.WorkingArea;
using (Graphics g = popupControl.CreateGraphics())
{
Size size = MeasureItemBounds(g);
size.Height -= 1;
//align it to control
if (pt.X < rcWork.Left)
{
pt.X += size.Width;
}
if (pt.X > rcWork.Right - size.Width)
{
pt.X -= size.Width;
}
if (pt.Y < rcWork.Top)
{
pt.Y += size.Height;
}
if (pt.Y > rcWork.Bottom - size.Height)
{
pt.Y -= size.Height;
}
//add offset pos
pt.X += pos.X;
pt.Y += pos.Y;
//ensure that it is completely visible on screen
if (pt.X < rcWork.Left)
{
pt.X = rcWork.Left;
}
if (pt.X > rcWork.Right - size.Width)
{
pt.X = rcWork.Right - size.Width;
}
if (pt.Y < rcWork.Top)
{
pt.Y = rcWork.Top;
}
if (pt.Y > rcWork.Bottom + size.Height)
{
pt.Y = rcWork.Bottom - size.Height;
}
popupControl.Bounds = new Rectangle(pt, size);
}
popupControl.Show();
}
