internal FloatEventArgs(TabWellBase tabWell, TabWellItem tab, MouseEventArgs e)
{
Source = Window.GetWindow(tabWell);
DataContext = tab?.GetContainerContext() ?? tabWell.GetContainerContext();
MouseOffset = e.GetPosition(tabWell);
if (tab != null)
{
TabOffset = tab.TranslatePoint(new Point(0, 0), tabWell).X;
}
var loc = tabWell.PointToScreenScaled(new Point(0, 0));
VisualBounds = new Rect(loc.X, loc.Y, tabWell.ActualWidth, tabWell.ActualHeight);
}
private void UpdateHighlightPath(IEnumerable <TabWellItem> sourceTabs, TabWellItem item)
{
var dock = DockTargetButton.CurrentTargetDock;
if (!dock.HasValue && item == null)
{
HighlightPath = Geometry.Empty;
return;
}
var col = new PointCollection();
if (dock.HasValue && dock.Value != DockTarget.Center)
{
if (!HighlightSplit(col, sourceTabs, item))
{
return;
}
}
else if (CanDropCenter) //mouse over center or specific tab
{
HighlightCenter(col, sourceTabs, item);
}
else
{
HighlightPath = Geometry.Empty;
return;
}
var segs = new List <PathSegment> {
new PolyLineSegment(col, true)
};
var geom = new PathGeometry();
geom.Figures.Add(new PathFigure(col[0], segs, true));
HighlightPath = geom;
}
private bool HighlightSplit(PointCollection col, IEnumerable <TabWellItem> sourceTabs, TabWellItem item)
{
var panel = DockTargetButton.CurrentTargetHost as FrameworkElement;
if (panel == null)
{
HighlightPath = Geometry.Empty;
return(false);
}
var dock = DockTargetButton.CurrentTargetDock.Value;
var wnd = Window.GetWindow(sourceTabs.First());
double width, height, xOffset, yOffset;
if (dock.GetDockOrientation() == Orientation.Horizontal)
{
width = Math.Min(wnd.ActualWidth, panel.ActualWidth / 2);
height = panel.ActualHeight;
xOffset = dock.GetDockSide() == Dock.Right ? panel.ActualWidth - width : 0;
yOffset = 0;
}
else
{
width = panel.ActualWidth;
height = Math.Min(wnd.ActualHeight, panel.ActualHeight / 2);
xOffset = 0;
yOffset = dock.GetDockSide() == Dock.Bottom ? panel.ActualHeight - height : 0;
}
var relativeOrigin = (UIElement)DockHost?.ContentHost ?? Window.GetWindow(TargetHost);
var panelOffset = panel.TranslatePoint(new Point(), relativeOrigin);
col.Add(new Point(panelOffset.X + xOffset, panelOffset.Y + yOffset));
col.Add(new Point(panelOffset.X + xOffset + width, panelOffset.Y + yOffset));
col.Add(new Point(panelOffset.X + xOffset + width, panelOffset.Y + yOffset + height));
col.Add(new Point(panelOffset.X + xOffset, panelOffset.Y + yOffset + height));
return(true);
}
private void HighlightCenter(PointCollection col, IEnumerable <TabWellItem> sourceTabs, TabWellItem item)
{
var relativeOrigin = (UIElement)DockHost?.ContentHost ?? Window.GetWindow(TargetHost);
var hostOffset = TargetHost.TranslatePoint(new Point(), relativeOrigin);
if (TargetHost is DocumentContainer)
{
col.Add(hostOffset);
col.Add(new Point(hostOffset.X + TargetArea.Width, hostOffset.Y));
col.Add(new Point(hostOffset.X + TargetArea.Width, hostOffset.Y + TargetArea.Height));
col.Add(new Point(hostOffset.X, hostOffset.Y + TargetArea.Height));
}
else
{
var well = TargetHost as TabWellBase;
var first = well.FirstContainer;
if (item == null)
{
item = first;
}
var firstOffset = first?.TranslatePoint(new Point(), relativeOrigin) ?? hostOffset;
var itemOffset = item?.TranslatePoint(new Point(), relativeOrigin) ?? hostOffset;
var itemHeight = sourceTabs.Max(t => t.ActualHeight);
var itemWidth = sourceTabs.Sum(t => t.ActualWidth);
if (TargetHost is DocumentWell)
{
col.Add(new Point(hostOffset.X, firstOffset.Y + itemHeight)); //well top-left
col.Add(new Point(itemOffset.X, itemOffset.Y + itemHeight)); //item bottom-left
col.Add(new Point(itemOffset.X, itemOffset.Y)); //item top-left
col.Add(new Point(itemOffset.X + itemWidth, itemOffset.Y)); //item top-right
col.Add(new Point(itemOffset.X + itemWidth, itemOffset.Y + itemHeight)); //item bottom-right
col.Add(new Point(hostOffset.X + TargetHost.ActualWidth, itemOffset.Y + itemHeight)); //well top-right
col.Add(new Point(hostOffset.X + TargetHost.ActualWidth, hostOffset.Y + TargetHost.ActualHeight)); //well bottom-right
col.Add(new Point(hostOffset.X, hostOffset.Y + TargetHost.ActualHeight)); //well bottom-left
}
else
{
col.Add(new Point(hostOffset.X, hostOffset.Y)); //well top-left
col.Add(new Point(hostOffset.X + TargetHost.ActualWidth, hostOffset.Y)); //well top-right
col.Add(new Point(hostOffset.X + TargetHost.ActualWidth, itemOffset.Y)); //well bottom-right
if (well.Items.Count > 1) //tab panel visible
{
col.Add(new Point(itemOffset.X + itemWidth, itemOffset.Y)); //item top-right
col.Add(new Point(itemOffset.X + itemWidth, itemOffset.Y + itemHeight)); //item bottom-right
col.Add(new Point(itemOffset.X, itemOffset.Y + itemHeight)); //item bottom-left
col.Add(new Point(itemOffset.X, itemOffset.Y)); //item top-left
}
col.Add(new Point(hostOffset.X, itemOffset.Y)); //well bottom-left
}
}
}