private void HandleMouseWheel(object sender, HtmlEventArgs args)
{
double delta = 0;
ScriptObject eventObj = args.EventObject;
if (eventObj.GetProperty("wheelDelta") != null)
{
delta = ((double)eventObj.GetProperty("wheelDelta")) / 120;
if (HtmlPage.Window.GetProperty("opera") != null)
delta = -delta;
}
else if (eventObj.GetProperty("detail") != null)
{
delta = -((double)eventObj.GetProperty("detail")) / 3;
if (HtmlPage.BrowserInformation.UserAgent.IndexOf("Macintosh") != -1)
delta = delta * 3;
}
if (delta != 0 && this.Moved != null)
{
MouseWheelEventArgs wheelArgs = new MouseWheelEventArgs(delta);
wheelArgs.IsHorizontal = args.ShiftKey;
this.Moved(this, wheelArgs);
if (wheelArgs.BrowserEventHandled)
args.PreventDefault();
}
}
private void HandleBrowserMouseWheelMoved(object sender, MouseWheelEventArgs e)
{
//Only fire the mouse wheel moved event if this is the top-most
//scrolling element in the UI tree.
if (IsActiveScrollViewer())
this.MouseWheelMoved(this, e);
}