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using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Media;
namespace CBR.Components.Designer
{
public class ResizeDecorator : Control
{
private Adorner adorner;
public bool ShowDecorator
{
get { return (bool)GetValue(ShowDecoratorProperty); }
set { SetValue(ShowDecoratorProperty, value); }
}
public static readonly DependencyProperty ShowDecoratorProperty =
DependencyProperty.Register("ShowDecorator", typeof(bool), typeof(ResizeDecorator),
new FrameworkPropertyMetadata(false, new PropertyChangedCallback(ShowDecoratorProperty_Changed)));
public ResizeDecorator()
{
Unloaded += new RoutedEventHandler(this.ResizeDecorator_Unloaded);
}
private void HideAdorner()
{
if (this.adorner != null)
{
this.adorner.Visibility = Visibility.Hidden;
}
}
private void ShowAdorner()
{
if (this.adorner == null)
{
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(this);
if (adornerLayer != null)
{
ContentControl designerItem = this.DataContext as ContentControl;
Canvas canvas = VisualTreeHelper.GetParent(designerItem) as Canvas;
this.adorner = new ResizeAdorner(designerItem);
adornerLayer.Add(this.adorner);
if (this.ShowDecorator)
{
this.adorner.Visibility = Visibility.Visible;
}
else
{
this.adorner.Visibility = Visibility.Hidden;
}
}
}
else
{
this.adorner.Visibility = Visibility.Visible;
}
}
private void ResizeDecorator_Unloaded(object sender, RoutedEventArgs e)
{
if (this.adorner != null)
{
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(this);
if (adornerLayer != null)
{
adornerLayer.Remove(this.adorner);
}
this.adorner = null;
}
}
private static void ShowDecoratorProperty_Changed(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
ResizeDecorator decorator = (ResizeDecorator)d;
bool showDecorator = (bool)e.NewValue;
if (showDecorator)
{
decorator.ShowAdorner();
}
else
{
decorator.HideAdorner();
}
}
}
}
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WPF and MVVM fan, I practice C # in all its forms from the beginning of the NET Framework without mentioning C ++ / MFC and other software packages such as databases, ASP, WCF, Web & Windows services, Application, and now Core and UWP.
In my wasted hours, I am guilty of having fathered C.B.R. and its cousins C.B.R. for WinRT and UWP on the Windows store.
But apart from that, I am a great handyman ... the house, a rocket stove to heat the jacuzzi and the last one: a wood oven for pizza, bread, and everything that goes inside
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