// Applies the selected options to the image brush.
private void UpdateBrush(object sender, RoutedEventArgs args)
{
try
{
myImageBrush.ImageSource = (_selectedButton.Content as Image).Source;
myImageBrush.Stretch = (Stretch)Enum.Parse(typeof(Stretch), (string)stretchSelector.SelectedItem);
myImageBrush.AlignmentX =
(AlignmentX)Enum.Parse(typeof(AlignmentX), (string)horizontalAlignmentSelector.SelectedItem);
myImageBrush.AlignmentY =
(AlignmentY)Enum.Parse(typeof(AlignmentY), (string)verticalAlignmentSelector.SelectedItem);
myImageBrush.TileMode = (TileMode)Enum.Parse(typeof(TileMode), (string)tileSelector.SelectedItem);
myImageBrush.ViewportUnits =
(BrushMappingMode)
Enum.Parse(typeof(BrushMappingMode), (string)viewportUnitsSelector.SelectedItem);
myImageBrush.ViewboxUnits =
(BrushMappingMode)Enum.Parse(typeof(BrushMappingMode), (string)viewboxUnitsSelector.SelectedItem);
var myRectConverter = new RectConverter();
var parseString = viewportEntry.Text;
if (!string.IsNullOrEmpty(parseString))
{
myImageBrush.Viewport = (Rect)myRectConverter.ConvertFromString(parseString);
}
else
{
myImageBrush.Viewport = Rect.Empty;
viewportEntry.Text = "Empty";
}
parseString = viewboxEntry.Text;
if (!string.IsNullOrEmpty(parseString) && parseString.ToLower() != "(auto)")
{
myImageBrush.Viewbox = (Rect)myRectConverter.ConvertFromString(parseString);
}
else
{
viewboxEntry.Text = "Empty";
myImageBrush.Viewbox = Rect.Empty;
}
}
catch (InvalidOperationException invalidOpEx)
{
MessageBox.Show("Invalid Viewport or Viewbox. " + invalidOpEx);
}
catch (FormatException formatEx)
{
MessageBox.Show("Invalid Viewport or Viewbox. " + formatEx);
}
}
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
RectConverter rc = new RectConverter();
if (value == null)
{
return(new Rect(0, 0, 0, 0));
}
return(rc.ConvertFromString((String)value));
}
