public WpfPresentationSource(UIElement rootElement, IWpfValueConverter converter)
{
this.RootElement = rootElement;
this.converter = converter;
RootElement.IsRootElement = true;
MouseDevice = new MouseDevice(this);
KeyboardDevice = new KeyboardDevice(this);
container = new wpf::System.Windows.Controls.Canvas { Background = wpf::System.Windows.Media.Brushes.Transparent };
container.PreviewMouseMove += OnContainerMouseMove;
container.PreviewMouseDown += OnContainerMouseDown;
container.PreviewMouseUp += OnContainerMouseUp;
container.PreviewMouseWheel += (sender, e) => e.Handled = MouseDevice.ProcessRawEvent(new RawMouseWheelEventArgs(e.Delta, converter.ConvertBack(e.GetPosition(container)), GetTimestamp()));
MouseDevice.CursorChanged += (sender, e) => container.Cursor = converter.Convert(MouseDevice.Cursor);
container.Cursor = converter.Convert(MouseDevice.Cursor);
window = new wpf::System.Windows.Window { UseLayoutRounding = true, Content = container };
window.Activated += (sender, e) => MouseDevice.Activate();
window.Deactivated += (sender, e) => MouseDevice.Deactivate();
window.SizeChanged += (sender, e) => SetRootElementSize();
window.PreviewKeyDown += (sender, e) => e.Handled = KeyboardDevice.ProcessRawEvent(new RawKeyboardEventArgs(converter.ConvertBack(e.Key), converter.ConvertBack(e.KeyStates), e.IsRepeat, GetTimestamp()));
window.PreviewKeyUp += (sender, e) => e.Handled = KeyboardDevice.ProcessRawEvent(new RawKeyboardEventArgs(converter.ConvertBack(e.Key), converter.ConvertBack(e.KeyStates), e.IsRepeat, GetTimestamp()));
window.Show();
container.Children.Add(((IWpfRenderElement)rootElement.GetRenderElement(WpfRenderElementFactory.Default)).WpfElement);
SetRootElementSize();
MouseDevice.Activate();
KeyboardDevice.Activate();
}
public Size Measure(string text, double fontSize, Typeface typeface, double maxWidth)
{
if (!text.IsNullOrEmpty() && text.EndsWith(Environment.NewLine))
{
text += " ";
}
wpf::System.Windows.Media.FormattedText formattedText = new wpf::System.Windows.Media.FormattedText(
text.DefaultIfNullOrEmpty("A"),
System.Globalization.CultureInfo.CurrentCulture,
wpf::System.Windows.FlowDirection.LeftToRight,
converter.Convert(typeface),
fontSize,
wpf::System.Windows.Media.Brushes.Black);
formattedText.Trimming = wpf::System.Windows.TextTrimming.None;
formattedText.MaxTextWidth = Double.IsInfinity(maxWidth) ? 0 : maxWidth;
return(new Size(text.IsNullOrEmpty() ? 0 : Math.Ceiling(formattedText.WidthIncludingTrailingWhitespace + 4), Math.Ceiling(formattedText.Height)));
}
private void OnForegroundChanged(object sender, EventArgs e)
{
textBlock.Foreground = converter.Convert(Foreground);
}
private void OnBackgroundChanged(object sender, EventArgs e)
{
container.Background = converter.Convert(Background);
}
