private void TestDrop()
{
if (IsCtrlKeyDown)
{
ShowsDockControlGuide = false;
PaneWithGuide = null;
if (_source.CanDrop(DockTreePosition.Floating))
{
Target = Target.Floating;
}
else
{
Target = Target.Empty;
}
}
else
{
ShowsDockControlGuide = true;
DockPane pane = PaneAtPoint();
Debug.Assert(pane == null || (pane != null && _source.CanDrop(pane)));
PaneWithGuide = pane;
Target = TargetAtPoint();
}
SetCursor();
}
private DockPane PaneAtPointNativeFloatingWindows(IDragSource source, double deltaX, double deltaY, out bool stopHitTest)
{
stopHitTest = false;
FloatingWindowCollection floatingWindows = DockControl.FloatingWindows;
Point pt = GetStartMousePosition(_overlayWindow);
pt.Offset(deltaX, deltaY);
for (int i = floatingWindows.Count - 1; i >= 0; i--)
{
FloatingWindow floatingWindow = floatingWindows[i];
if (!floatingWindow.IsVisible)
{
continue;
}
NativeFloatingWindow nativeWindow = NativeFloatingWindow.GetNativeFloatingWindow(floatingWindow);
Rect windowBounds = nativeWindow.GetPreviewBounds(_overlayWindow);
stopHitTest = windowBounds.Contains(pt);
if (stopHitTest)
{
pt = GetStartMousePosition(nativeWindow);
pt.Offset(deltaX, deltaY);
var result = PaneFromHitTestResult(source, VisualTreeHelper.HitTest(nativeWindow, pt));
if (result == null || !source.CanDrop(result))
{
stopHitTest = false;
continue;
}
return(result);
}
}
return(null);
}
private static DockPane PaneFromHitTestResult(IDragSource source, HitTestResult result)
{
if (result == null || result.VisualHit == null)
{
return(null);
}
for (Visual visual = result.VisualHit as Visual; visual != null; visual = VisualTreeHelper.GetParent(visual) as Visual)
{
DockItem targetItem = GetTargetItem(visual);
DropPosition targetPosition = GetTargetPosition(visual);
if (targetItem != null && targetPosition == DropPosition.None && source.CanDrop(targetItem.FirstPane))
{
return(targetItem.FirstPane);
}
}
return(null);
}
private DockPane PaneAtPointWpfFloatingWindows(IDragSource source, double deltaX, double deltaY, out bool stopHitTest)
{
stopHitTest = false;
FloatingWindowCollection floatingWindows = DockControl.FloatingWindows;
Point pt = GetStartMousePosition(_wpfFloatingWindowClient);
pt.Offset(deltaX, deltaY);
for (int i = floatingWindows.Count - 1; i >= 0; i--)
{
FloatingWindow floatingWindow = floatingWindows[i];
if (!floatingWindow.IsVisible)
{
continue;
}
WpfFloatingWindow window = _wpfFloatingWindowClient.ItemContainerGenerator.ContainerFromItem(floatingWindow) as WpfFloatingWindow;
if (window == null)
{
continue;
}
Rect windowBounds = new Rect(window.Left, window.Top, window.ActualWidth, window.ActualHeight);
stopHitTest = windowBounds.Contains(pt);
if (stopHitTest)
{
pt = _wpfFloatingWindowClient.TranslatePoint(pt, window);
var result = PaneFromHitTestResult(source, VisualTreeHelper.HitTest(window, pt));
if (result == null || !source.CanDrop(result))
{
stopHitTest = false;
continue;
}
return(result);
}
}
return(null);
}
