HitTestFilterBehavior HitTestFilter(DependencyObject potentialHit)
{
TabDockSpot spot = potentialHit as TabDockSpot;
if (spot != null && spot.IsHitTestVisible)
{
this.hitTestSpot = spot;
return(HitTestFilterBehavior.Stop);
}
return(HitTestFilterBehavior.Continue);
}
HitTestFilterBehavior HitTestFilter(DependencyObject potentialHit)
{
TabDockSpot spot = potentialHit as TabDockSpot;
if (spot != null && spot.IsHitTestVisible)
{
this.hitTestSpot = spot;
return HitTestFilterBehavior.Stop;
}
return HitTestFilterBehavior.Continue;
}
void UpdateHitState()
{
var pos = Mouse.GetPosition(this.draggedItem);
if (this.preMoving)
{
var vector = pos - this.offset;
if ((Math.Abs(vector.X) >= SystemParameters.MinimumHorizontalDragDistance) ||
(Math.Abs(vector.Y) >= SystemParameters.MinimumVerticalDragDistance))
{
this.StartMoving();
}
else
{
return;
}
}
bool positionSet = false;
var result = VisualTreeHelper.HitTest(Application.Current.MainWindow, Mouse.GetPosition(Application.Current.MainWindow));
var newTargetControl = (result != null && result.VisualHit != null) ? result.VisualHit.FindParent <ActivatableTabControl>() : null;
foreach (var floater in this.sourceSplitTabsControl.FloatingWindows)
{
result = VisualTreeHelper.HitTest(floater, Mouse.GetPosition(floater));
if (result != null && result.VisualHit != null)
{
newTargetControl = result.VisualHit.FindParent <ActivatableTabControl>() ?? newTargetControl;
}
}
SetNewDropTarget(newTargetControl);
if (this.dropTarget.IsVisible)
{
this.hitTestSpot = null;
VisualTreeHelper.HitTest(this.dropTarget, this.HitTestFilter, this.HitTestResult, new PointHitTestParameters(Mouse.GetPosition(this.dropTarget)));
if (this.hitTestSpot != null)
{
var spot = this.hitTestSpot;
if (spot != null)
{
var rect = spot.DestinationNode.GetScreenRect();
if (spot.IsTabbed)
{
this.dragShadow.Left = rect.X;
this.dragShadow.Top = rect.Y;
this.dragShadow.Width = rect.Width;
this.dragShadow.Height = rect.Height;
positionSet = true;
}
else
{
switch (spot.Dock)
{
case Dock.Top:
this.dragShadow.Left = rect.X;
this.dragShadow.Top = rect.Y;
this.dragShadow.Width = rect.Width;
this.dragShadow.Height = rect.Height / 2;
positionSet = true;
break;
case Dock.Bottom:
this.dragShadow.Width = rect.Width;
this.dragShadow.Height = rect.Height / 2;
this.dragShadow.Left = rect.X;
this.dragShadow.Top = rect.Y + this.dragShadow.Height;
positionSet = true;
break;
case Dock.Left:
this.dragShadow.Left = rect.X;
this.dragShadow.Top = rect.Y;
this.dragShadow.Width = rect.Width / 2;
this.dragShadow.Height = rect.Height;
positionSet = true;
break;
case Dock.Right:
this.dragShadow.Width = rect.Width / 2;
this.dragShadow.Height = rect.Height;
this.dragShadow.Left = rect.X + this.dragShadow.Width;
this.dragShadow.Top = rect.Y;
positionSet = true;
break;
}
}
}
}
}
if (!positionSet)
{
pos = this.draggedItem.PointToScreenIndependent(pos);
this.dragShadow.Left = pos.X - offset.X;
this.dragShadow.Top = pos.Y - offset.Y;
this.dragShadow.Width = dragWindowSize.Width;
this.dragShadow.Height = dragWindowSize.Height;
}
}
void UpdateHitState()
{
var pos = Mouse.GetPosition(this.draggedItem);
if (this.preMoving)
{
var vector = pos - this.offset;
if ((Math.Abs(vector.X) >= SystemParameters.MinimumHorizontalDragDistance) ||
(Math.Abs(vector.Y) >= SystemParameters.MinimumVerticalDragDistance))
{
this.StartMoving();
}
else
{
return;
}
}
bool positionSet = false;
var result = VisualTreeHelper.HitTest(Application.Current.MainWindow, Mouse.GetPosition(Application.Current.MainWindow));
var newTargetControl = (result != null && result.VisualHit != null) ? result.VisualHit.FindParent<ActivatableTabControl>() : null;
foreach (var floater in this.sourceSplitTabsControl.FloatingWindows)
{
result = VisualTreeHelper.HitTest(floater, Mouse.GetPosition(floater));
if (result != null && result.VisualHit != null)
{
newTargetControl = result.VisualHit.FindParent<ActivatableTabControl>() ?? newTargetControl;
}
}
SetNewDropTarget(newTargetControl);
if (this.dropTarget.IsVisible)
{
this.hitTestSpot = null;
VisualTreeHelper.HitTest(this.dropTarget, this.HitTestFilter, this.HitTestResult, new PointHitTestParameters(Mouse.GetPosition(this.dropTarget)));
if (this.hitTestSpot != null)
{
var spot = this.hitTestSpot;
if (spot != null)
{
var rect = spot.DestinationNode.GetScreenRect();
if (spot.IsTabbed)
{
this.dragShadow.Left = rect.X;
this.dragShadow.Top = rect.Y;
this.dragShadow.Width = rect.Width;
this.dragShadow.Height = rect.Height;
positionSet = true;
}
else
{
switch (spot.Dock)
{
case Dock.Top:
this.dragShadow.Left = rect.X;
this.dragShadow.Top = rect.Y;
this.dragShadow.Width = rect.Width;
this.dragShadow.Height = rect.Height / 2;
positionSet = true;
break;
case Dock.Bottom:
this.dragShadow.Width = rect.Width;
this.dragShadow.Height = rect.Height / 2;
this.dragShadow.Left = rect.X;
this.dragShadow.Top = rect.Y + this.dragShadow.Height;
positionSet = true;
break;
case Dock.Left:
this.dragShadow.Left = rect.X;
this.dragShadow.Top = rect.Y;
this.dragShadow.Width = rect.Width / 2;
this.dragShadow.Height = rect.Height;
positionSet = true;
break;
case Dock.Right:
this.dragShadow.Width = rect.Width / 2;
this.dragShadow.Height = rect.Height;
this.dragShadow.Left = rect.X + this.dragShadow.Width;
this.dragShadow.Top = rect.Y;
positionSet = true;
break;
}
}
}
}
}
if (!positionSet)
{
pos = this.draggedItem.PointToScreenIndependent(pos);
this.dragShadow.Left = pos.X - offset.X;
this.dragShadow.Top = pos.Y - offset.Y;
this.dragShadow.Width = dragWindowSize.Width;
this.dragShadow.Height = dragWindowSize.Height;
}
}
