void Capture_IsCapturingChanged(object sender, EventArgs e)
{
if (this.ViewModel.Capture.IsCapturing)
{
var interior = new Rect(this.ModelView.ActualWidth * 0.1,
this.ModelView.ActualHeight * 0.1,
this.ModelView.ActualWidth * 0.8,
this.ModelView.ActualHeight * 0.8);
var adornerLayer = AdornerLayer.GetAdornerLayer(this.ModelView);
_croppingAdorner = new CroppingAdorner(this.ModelView, interior);
_croppingAdorner.Fill = new SolidColorBrush(Color.FromArgb(0xC0, 0, 0, 0));
_croppingAdorner.SetBinding(CroppingAdorner.ClippingRectangleProperty,
new Binding("ClippingRectangle")
{
Source = this.ViewModel.Capture,
Mode = BindingMode.TwoWay
});
_croppingAdorner.SetBinding(CroppingAdorner.MinimumClippingWidthProperty,
new Binding("MinimumClippingWidth")
{
Source = this.ViewModel.Capture
});
_croppingAdorner.SetBinding(CroppingAdorner.MinimumClippingHeightProperty,
new Binding("MinimumClippingHeight")
{
Source = this.ViewModel.Capture
});
_croppingAdorner.SetBinding(CroppingAdorner.IsResizeEnabledProperty,
new Binding("IsResizeEnabled")
{
Source = this.ViewModel.Capture
});
_croppingAdorner.SetBinding(CroppingAdorner.UniformScaleProperty,
new Binding("IsOutputSizeLocked")
{
Source = this.ViewModel.Capture
});
adornerLayer.Add(_croppingAdorner);
}
else
{
var adornerLayer = AdornerLayer.GetAdornerLayer(this.ModelView);
adornerLayer.Remove(_croppingAdorner);
}
}