internal void OnChildPlacementChanged(Widget child)
{
Backend.UpdateChildPlacement(child.GetBackend());
if (!BackendHost.EngineBackend.HandlesSizeNegotiation)
{
Widget.QueueWindowSizeNegotiation(this);
}
}
public void RemoveChild(Widget w)
{
if (positions != null)
{
positions.Remove(w);
}
Backend.RemoveChild((IWidgetBackend)Widget.GetBackend(w));
UnregisterChild(w);
OnPreferredSizeChanged();
}
/// <summary>
/// Sets the position and size of a child widget
/// </summary>
/// <param name='widget'>
/// The child widget. It must have been added using the AddChild method.
/// </param>
/// <param name='bounds'>
/// New bounds, in container coordinates
/// </param>
/// <exception cref="System.ArgumentException">If the widget is not a child of this canvas</exception>
public void SetChildBounds(Widget widget, Rectangle bounds)
{
if (positions == null || widget.Parent != this)
{
throw new ArgumentException("Widget is not a child of the canvas");
}
positions [widget] = bounds;
Backend.SetChildBounds((IWidgetBackend)Widget.GetBackend(widget), bounds);
}
/// <summary>
/// Removes a child widget
/// </summary>
/// <param name='widget'>
/// The widget to remove. The widget must have been previously added using AddChild.
/// </param>
/// <exception cref="System.ArgumentException">If the widget is not a child of this canvas</exception>
public void RemoveChild(Widget widget)
{
if (positions == null || widget.Parent != this)
{
throw new ArgumentException("Widget is not a child of the canvas");
}
positions.Remove(widget);
Backend.RemoveChild((IWidgetBackend)Widget.GetBackend(widget));
UnregisterChild(widget);
}
public void AddChild(Widget w, Rectangle rect)
{
if (positions != null)
{
positions = new Dictionary <Widget, Rectangle> ();
}
var bk = (IWidgetBackend)Widget.GetBackend(w);
Backend.AddChild(bk);
Backend.SetChildBounds(bk, rect);
RegisterChild(w);
OnPreferredSizeChanged();
}
/// <summary>
/// Adds a child widget.
/// </summary>
/// <param name='widget'>
/// The widget
/// </param>
/// <param name='bounds'>
/// Position and size of the child widget, in container coordinates
/// </param>
/// <remarks>
/// The widget is placed in the canvas area, in the specified coordinates and
/// using the specified size
/// </remarks>
public void AddChild(Widget widget, Rectangle bounds)
{
if (positions == null)
{
positions = new Dictionary <Widget, Rectangle> ();
}
positions [widget] = bounds;
var bk = (IWidgetBackend)Widget.GetBackend(widget);
Backend.AddChild(bk, bounds);
RegisterChild(widget);
}
public void SetChildBounds(Widget w, Rectangle rect)
{
Backend.SetChildBounds((IWidgetBackend)Widget.GetBackend(w), rect);
OnPreferredSizeChanged();
}
internal void OnChildPlacementChanged(Widget child)
{
Backend.UpdateChildPlacement (child.GetBackend ());
if (!BackendHost.EngineBackend.HandlesSizeNegotiation)
Widget.QueueWindowSizeNegotiation (this);
}
/// <summary>
/// Removes a child widget
/// </summary>
/// <param name='widget'>
/// The widget to remove. The widget must have been previously added using AddChild.
/// </param>
/// <exception cref="System.ArgumentException">If the widget is not a child of this canvas</exception>
public void RemoveChild(Widget widget)
{
UnregisterChild(widget);
positions.Remove(widget);
Backend.RemoveChild((IWidgetBackend)Widget.GetBackend(widget));
}
/// <summary>
/// Shows the menu at the specified location
/// </summary>
/// <param name="parentWidget">Widget upon which to show the menu</param>
/// <param name="x">The x coordinate, relative to the widget origin</param>
/// <param name="y">The y coordinate, relative to the widget origin</param>
public void Popup(Widget parentWidget, double x, double y)
{
Backend.Popup(parentWidget.GetBackend(), x, y);
}
