public ScrollViewerStyle(ScrollViewerStyle style) : base(style)
{
HorizontalScrollBackground = style.HorizontalScrollBackground;
HorizontalScrollKnob = style.HorizontalScrollKnob;
VerticalScrollBackground = style.VerticalScrollBackground;
VerticalScrollKnob = style.VerticalScrollKnob;
}
public void ApplyScrollViewerStyle(ScrollViewerStyle style)
{
HorizontalScrollBackground = style.HorizontalScrollBackground;
HorizontalScrollKnob = style.HorizontalScrollKnob;
VerticalScrollBackground = style.VerticalScrollBackground;
VerticalScrollKnob = style.VerticalScrollKnob;
ApplyWidgetStyle(style);
}
private Style CreateScrollViewerStyle()
{
var style = ScrollViewerStyle.CreateScrollViewerStyle();
var templateSetter = style.Setters.FirstOrDefault(s => s.Property == Control.TemplateProperty);
if (templateSetter != null)
{
var oldTemplate = templateSetter.Value as ControlTemplate;
var funcType = typeof(Func <UIElement, UIElement>);
var funcField = oldTemplate.GetType().GetFields(BindingFlags.NonPublic | BindingFlags.Instance)
.FirstOrDefault(field => field.FieldType == funcType);
var oldMethod = funcField?.GetValue(oldTemplate) as Func <UIElement, UIElement>;
if (oldMethod != null)
{
var newMethod = new Func <UIElement, UIElement>(parent =>
{
UIElement elem = oldMethod(parent);
ScrollBar scrollBar = VisualTreeHelper.Instance.FindElementByName(elem, "PART_VerticalScrollBar") as ScrollBar;
if (scrollBar != null)
{
scrollBar.Width = 12;
scrollBar.MaxWidth = 12;
scrollBar.MinWidth = 12;
}
scrollBar = VisualTreeHelper.Instance.FindElementByName(elem, "PART_HorizontalScrollBar") as ScrollBar;
if (scrollBar != null)
{
scrollBar.Height = 50;
}
return(elem);
});
funcField.SetValue(oldTemplate, newMethod);
}
}
return(style);
}
