//------------------------------------------------------
//
// Protected Methods
//
//------------------------------------------------------
#region Protected Methods
// This method will return the leaf element that lives in ProxyFragment at Point(x,y)
static internal ProxySimple DrillDownFragment(ProxyFragment fragment, int x, int y)
{
System.Diagnostics.Debug.Assert(fragment != null, "DrillDownFragment: starting point is null");
// drill down
ProxySimple fromPoint = fragment.ElementProviderFromPoint(x, y);
System.Diagnostics.Debug.Assert(fromPoint != null, @"DrillDownFragment: calling ElementProviderFromPoint on Fragment should not return null");
// Check if we got back a new fragment
// do this check before trying to cast to ProxyFragment
if (fragment == fromPoint || Misc.Compare(fragment, fromPoint))
{
// Point was on the fragment
// but not on any element that lives inside of the fragment
return(fragment);
}
fragment = fromPoint as ProxyFragment;
if (fragment == null)
{
// we got back a simple element
return(fromPoint);
}
// Got a new fragment, continue drilling
return(DrillDownFragment(fragment, x, y));
}
// Returns a Proxy element corresponding to the specified screen coordinates.
internal override ProxySimple ElementProviderFromPoint(int x, int y)
{
int hit = Misc.ProxySendMessageInt(_hwnd, NativeMethods.WM_NCHITTEST, IntPtr.Zero, NativeMethods.Util.MAKELPARAM(x, y));
switch (hit)
{
case NativeMethods.HTHSCROLL:
{
ProxyFragment ret = CreateNonClientChild(NonClientItem.HScrollBar);
return(ret.ElementProviderFromPoint(x, y));
}
case NativeMethods.HTVSCROLL:
{
ProxyFragment ret = CreateNonClientChild(NonClientItem.VScrollBar);
return(ret.ElementProviderFromPoint(x, y));
}
case NativeMethods.HTCAPTION:
case NativeMethods.HTMINBUTTON:
case NativeMethods.HTMAXBUTTON:
case NativeMethods.HTHELP:
case NativeMethods.HTCLOSE:
case NativeMethods.HTSYSMENU:
WindowsTitleBar tb = new WindowsTitleBar(_hwnd, this, 0);
return(tb.ElementProviderFromPoint(x, y));
case NativeMethods.HTGROWBOX:
return(CreateNonClientChild(NonClientItem.Grip));
case NativeMethods.HTBOTTOMRIGHT:
return(FindGrip(x, y));
case NativeMethods.HTBOTTOMLEFT:
return(FindGripMirrored(x, y));
case NativeMethods.HTMENU:
return(FindMenus(x, y));
case NativeMethods.HTLEFT:
case NativeMethods.HTRIGHT:
case NativeMethods.HTTOP:
case NativeMethods.HTTOPLEFT:
case NativeMethods.HTTOPRIGHT:
case NativeMethods.HTBOTTOM:
case NativeMethods.HTBORDER:
// We do not handle the borders so return null here and let the
// HWNDProvider handle them as the whole window.
return(null);
default:
// Leave all other cases (especially including HTCLIENT) alone...
return(null);
}
}
private ProxySimple FindMenus(int x, int y)
{
if (WindowsMenu.IsInSystemMenuMode())
{
// Since in system menu mode try to find point on the SystemMenu
WindowsTitleBar titleBar = (WindowsTitleBar)CreateNonClientChild(NonClientItem.TitleBar);
if (titleBar != null)
{
ProxyFragment systemMenu = (ProxyFragment)titleBar.CreateTitleBarChild(WindowsTitleBar._systemMenu);
if (systemMenu != null)
{
// need to drill down ourself, since the FragmentRoot of the System Menu Bar will
// be NonClient area hence UIAutomation will not drill down
ProxySimple proxy = systemMenu.ElementProviderFromPoint(x, y);
if (proxy != null)
{
return(proxy);
}
}
}
}
else
{
// Not in system menu mode so it may be a Popup Menu, have a go at it
ProxyFragment menu = CreateNonClientChild(NonClientItem.Menu);
if (menu != null)
{
// need to drill down ourself, since the FragmentRoot of the MenuBar will
// be NonClient area hence UIAutomation will not drill down
ProxySimple proxy = menu.ElementProviderFromPoint(x, y);
if (proxy != null)
{
return(proxy);
}
// We may have been on the Menu but not on a menu Item
return(menu);
}
}
return(null);
}
//------------------------------------------------------
//
// Protected Methods
//
//------------------------------------------------------
#region Protected Methods
// This method will return the leaf element that lives in ProxyFragment at Point(x,y)
static internal ProxySimple DrillDownFragment(ProxyFragment fragment, int x, int y)
{
System.Diagnostics.Debug.Assert(fragment != null, "DrillDownFragment: starting point is null");
// drill down
ProxySimple fromPoint = fragment.ElementProviderFromPoint(x, y);
System.Diagnostics.Debug.Assert(fromPoint != null, @"DrillDownFragment: calling ElementProviderFromPoint on Fragment should not return null");
// Check if we got back a new fragment
// do this check before trying to cast to ProxyFragment
if (fragment == fromPoint || Misc.Compare(fragment, fromPoint))
{
// Point was on the fragment
// but not on any element that lives inside of the fragment
return fragment;
}
fragment = fromPoint as ProxyFragment;
if (fragment == null)
{
// we got back a simple element
return fromPoint;
}
// Got a new fragment, continue drilling
return DrillDownFragment(fragment, x, y);
}