コード例 #1
0
        public static T FindParent <T>(DependencyObject child) where T : DependencyObject
        {
            if (!(child is Visual))
            {
                return(null);
            }

            DependencyObject parent = VisualTreeHelper.GetParent(child) as DependencyObject;

            if (parent == null)
            {
                return(null);
            }
            if (parent is T)
            {
                return(parent as T);
            }

            return(VisualTreeExtensions.FindParent <T>(parent));
        }
コード例 #2
0
        public static T FindParentByName <T>(DependencyObject child, string name) where T : DependencyObject
        {
            DependencyObject parent = VisualTreeHelper.GetParent(child) as DependencyObject;

            if (parent == null)
            {
                return(null);
            }

            FrameworkElement fe = parent as FrameworkElement;

            if (fe != null)
            {
                if (fe is T && fe.Name.CompareTo(name) == 0)
                {
                    return(parent as T);
                }
            }

            return(VisualTreeExtensions.FindParent <T>(parent));
        }
コード例 #3
0
ファイル: Adorner.cs プロジェクト: Big3Software/hitbase
        // A common way to implement an adorner's rendering behavior is to override the OnRender
        // method, which is called by the layout system as part of a rendering pass.
        protected override void OnRender(DrawingContext drawingContext)
        {
            Rect adornedElementRect = new Rect(this.AdornedElement.DesiredSize);

            // Some arbitrary drawing implements.
            SolidColorBrush renderBrush = new SolidColorBrush(Colors.White);
            //renderBrush.Opacity = 0.2;
            double renderRadius = 5.0;

            // Draw a circle at each corner.
            Viewbox parentViewbox = VisualTreeExtensions.FindParent <Viewbox>(this.AdornedElement);

            double factor = parentViewbox.Child.RenderSize.Width / parentViewbox.RenderSize.Width;

            renderRadius *= factor;
            Pen renderPen = new Pen(Brushes.Black, 1.5 * factor);

            drawingContext.DrawEllipse(renderBrush, renderPen, adornedElementRect.TopLeft, renderRadius, renderRadius);
            drawingContext.DrawEllipse(renderBrush, renderPen, adornedElementRect.TopRight, renderRadius, renderRadius);
            drawingContext.DrawEllipse(renderBrush, renderPen, adornedElementRect.BottomLeft, renderRadius, renderRadius);
            drawingContext.DrawEllipse(renderBrush, renderPen, adornedElementRect.BottomRight, renderRadius, renderRadius);
        }