/// <summary>
/// Walks up the visual tree starting with the specified DependencyObject,
/// looking for a UIElement which is a child of the Canvas. If a suitable
/// element is not found, null is returned. If the 'depObj' object is a
/// UIElement in the Canvas's Children collection, it will be returned.
/// </summary>
/// <param name="depObj">
/// A DependencyObject from which the search begins.
/// </param>
public UIElement FindCanvasChild(DependencyObject depObj)
{
while (depObj != null)
{
// If the current object is a UIElement which is a child of the
// Canvas, exit the loop and return it.
UIElement elem = depObj as UIElement;
if (elem != null && base.Children.Contains(elem))
{
break;
}
if (!DragCanvas.GetCanBeDragged(elem))
{
return(null);
}
// VisualTreeHelper works with objects of type Visual or Visual3D.
// If the current object is not derived from Visual or Visual3D,
// then use the LogicalTreeHelper to find the parent element.
if (depObj is Visual || depObj is Visual3D)
{
depObj = VisualTreeHelper.GetParent(depObj);
}
else
{
depObj = LogicalTreeHelper.GetParent(depObj);
}
}
return(depObj as UIElement);
}
public TabItem Add(string id, string header)
{
var ellipse = new Ellipse {Fill = Brushes.Green, Width = 30.0, Height = 30.0};
var canvas = new DragCanvas {Name = "canvas_" + id};
var ti = new TabItem { Name = "tab_"+id, Header = header, Content = canvas};
var tci = new TabCanvasItem(ti, canvas);
mw.tcDraw.Items.Add(ti);
tabs.Add(id, tci);
return ti;
}
void System.Windows.Markup.IComponentConnector.Connect(int connectionId, object target) {
switch (connectionId)
{
case 1:
this.btnAllowDragging = ((System.Windows.Controls.Primitives.ToggleButton)(target));
return;
case 2:
this.btnAllowDragOutOfView = ((System.Windows.Controls.Primitives.ToggleButton)(target));
return;
case 3:
this.btnOnlyShowOffsetIndicators = ((System.Windows.Controls.Primitives.ToggleButton)(target));
return;
case 4:
this.dragCanvas = ((WPF.JoshSmith.Controls.DragCanvas)(target));
return;
case 5:
#line 32 "..\..\Window1.xaml"
((System.Windows.Controls.ContextMenu)(target)).Opened += new System.Windows.RoutedEventHandler(this.OnContextMenuOpened);
#line default
#line hidden
#line 32 "..\..\Window1.xaml"
((System.Windows.Controls.ContextMenu)(target)).AddHandler(System.Windows.Controls.MenuItem.ClickEvent, new System.Windows.RoutedEventHandler(this.OnMenuItemClick));
#line default
#line hidden
return;
case 6:
this.menuItemBringToFront = ((System.Windows.Controls.MenuItem)(target));
return;
case 7:
this.menuItemSendToBack = ((System.Windows.Controls.MenuItem)(target));
return;
case 8:
this.menuItemCanBeDragged = ((System.Windows.Controls.MenuItem)(target));
return;
case 9:
this.stackPanel = ((System.Windows.Controls.StackPanel)(target));
return;
case 10:
#line 74 "..\..\Window1.xaml"
((System.Windows.Controls.Button)(target)).Click += new System.Windows.RoutedEventHandler(this.OnButtonClick);
#line default
#line hidden
return;
}
this._contentLoaded = true;
}
public CanvasManager(DragCanvas canvas)
{
Canvas = canvas;
}
public TabCanvasItem(TabItem tabItem, DragCanvas canvas)
{
TabItem = tabItem;
Canvas = canvas;
}
