private static bool ShouldStartDraggingControl( int x, int y )
{
// We're not holding a control down..
if (m_LastPressedControl == null)
return false;
// Not been dragged far enough
int length = Math.Abs(x - m_LastPressedPos.X) + Math.Abs(y - m_LastPressedPos.Y);
if (length < 5)
return false;
// Create the dragging package
CurrentPackage = m_LastPressedControl.DragAndDrop_GetPackage(m_LastPressedPos.X, m_LastPressedPos.Y);
// We didn't create a package!
if (CurrentPackage == null)
{
m_LastPressedControl = null;
SourceControl = null;
return false;
}
// Now we're dragging something!
SourceControl = m_LastPressedControl;
InputHandler.MouseFocus = null;
m_LastPressedControl = null;
CurrentPackage.DrawControl = null;
// Some controls will want to decide whether they should be dragged at that moment.
// This function is for them (it defaults to true)
if (!SourceControl.DragAndDrop_ShouldStartDrag())
{
SourceControl = null;
CurrentPackage = null;
return false;
}
SourceControl.DragAndDrop_StartDragging(CurrentPackage, m_LastPressedPos.X, m_LastPressedPos.Y);
return true;
}