public static void SetChildPlacement(IWidgetBackend childBackend)
{
var backend = (WidgetBackend)childBackend;
var child = backend.RootWidget;
var wrapper = child.Parent as WidgetPlacementWrapper;
var fw = backend.Frontend;
if (!NeedsAlignmentWrapper(fw))
{
if (wrapper != null)
{
wrapper.Remove(child);
GtkEngine.ReplaceChild(wrapper, child);
}
return;
}
if (wrapper == null)
{
wrapper = new WidgetPlacementWrapper();
wrapper.Show();
GtkEngine.ReplaceChild(child, wrapper);
wrapper.Add(child);
}
wrapper.UpdatePlacement(fw);
}
public virtual void UpdateLayout()
{
if (frontend.Margin.HorizontalSpacing == 0 && frontend.Margin.VerticalSpacing == 0)
{
if (alignment != null)
{
alignment.Remove(alignment.Child);
GtkEngine.ReplaceChild(alignment, EventsRootWidget);
alignment.Destroy();
alignment = null;
}
}
else
{
if (alignment == null)
{
alignment = new Gtk.Alignment(0, 0, 1, 1);
GtkEngine.ReplaceChild(EventsRootWidget, alignment);
alignment.Add(EventsRootWidget);
alignment.Visible = Widget.Visible;
}
alignment.LeftPadding = (uint)frontend.Margin.Left;
alignment.RightPadding = (uint)frontend.Margin.Right;
alignment.TopPadding = (uint)frontend.Margin.Top;
alignment.BottomPadding = (uint)frontend.Margin.Bottom;
}
}
protected void AllocEventBox(bool visibleWindow = false)
{
// Wraps the widget with an event box. Required for some
// widgets such as Label which doesn't have its own gdk window
if (!NeedsEventBox)
{
return;
}
if (eventBox == null && !EventsRootWidget.GetHasWindow())
{
if (EventsRootWidget is Gtk.EventBox)
{
((Gtk.EventBox)EventsRootWidget).VisibleWindow = true;
return;
}
eventBox = new Gtk.EventBox();
eventBox.Visible = Widget.Visible;
eventBox.Sensitive = Widget.Sensitive;
eventBox.VisibleWindow = visibleWindow;
GtkEngine.ReplaceChild(Widget, eventBox);
eventBox.Add(Widget);
}
}
public virtual void UpdateLayout()
{
if (frontend.Margin.HorizontalSpacing == 0 && frontend.Margin.VerticalSpacing == 0)
{
if (alignment != null)
{
alignment.Remove(Widget);
Gtk.Container cont = alignment.Parent as Gtk.Container;
if (cont != null)
{
GtkEngine.ReplaceChild(cont, alignment, Widget);
}
alignment.Destroy();
alignment = null;
}
}
else
{
if (alignment == null)
{
alignment = new Gtk.Alignment(0, 0, 1, 1);
Gtk.Container cont = Widget.Parent as Gtk.Container;
if (cont != null)
{
GtkEngine.ReplaceChild(cont, Widget, alignment);
}
alignment.Add(Widget);
}
alignment.LeftPadding = (uint)frontend.Margin.Left;
alignment.RightPadding = (uint)frontend.Margin.Right;
alignment.TopPadding = (uint)frontend.Margin.Top;
alignment.BottomPadding = (uint)frontend.Margin.Bottom;
}
}
public void SetContent(IWidgetBackend widget)
{
var newWidget = GetWidget(widget);
var oldWidget = Widget.Child;
if (oldWidget == null)
{
Widget.Child = newWidget;
}
else
{
GtkEngine.ReplaceChild(oldWidget, newWidget);
}
}
void AllocEventBox(bool visibleWindow = false)
{
// Wraps the widget with an event box. Required for some
// widgets such as Label which doesn't have its own gdk window
if (eventBox == null && EventsRootWidget.IsNoWindow)
{
eventBox = new Gtk.EventBox();
eventBox.Visible = Widget.Visible;
eventBox.Sensitive = Widget.Sensitive;
eventBox.VisibleWindow = visibleWindow;
GtkEngine.ReplaceChild(Widget, eventBox);
eventBox.Add(Widget);
}
}
public void SetContent(IWidgetBackend widget)
{
childBackend = (WidgetBackend)widget;
var newWidget = GetWidgetWithPlacement(widget);
var oldWidget = Widget.Child;
if (oldWidget == null)
{
Widget.Child = newWidget;
}
else
{
GtkEngine.ReplaceChild(oldWidget, newWidget);
RemoveChildPlacement(oldWidget);
}
}
void AllocEventBox()
{
// Wraps the widget with an event box. Required for some
// widgets such as Label which doesn't have its own gdk window
if (eventBox == null && EventsRootWidget.IsNoWindow)
{
eventBox = new Gtk.EventBox();
eventBox.Visible = Widget.Visible;
eventBox.Sensitive = Widget.Sensitive;
if (alignment != null)
{
alignment.Remove(alignment.Child);
alignment.Add(eventBox);
}
else
{
GtkEngine.ReplaceChild(Widget, eventBox);
}
eventBox.Add(Widget);
}
}