LunarMind/ConceptWidgets/Adorners/CommentAdorner.cs

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using System.Windows;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using SHomeWorkshop.LunarConcept.Enums;
using System.Windows.Controls;
using SHomeWorkshop.LunarConcept.Controls;

namespace SHomeWorkshop.LunarConcept.Adorners
{
    /// <summary>
    /// 创建时间：2012年7月14日
    /// 创建者：  杨震宇
    /// 
    /// 主要用途：用于显示部件的备注。
    /// </summary>
    public class CommentAdorner : Adorner
    {
        /// <summary>
        /// [构造方法]
        /// </summary>
        /// <param name="adornedElement"></param>
        public CommentAdorner(UIElement adornedElement, Widgets.Widget masterWidget)
            : base(adornedElement)
        {
            //终于解决了选定装饰器中线条宽度为2而不是1像素的问题！！！
            //this.SnapsToDevicePixels = true;
            //this.SetValue(TextOptions.TextFormattingModeProperty, TextFormattingMode.Display);
            this.SetValue(RenderOptions.EdgeModeProperty, EdgeMode.Aliased);

            this.masterWidget = masterWidget;

            this.Cursor = Cursors.Arrow;
        }

        private Widgets.Widget masterWidget;

        public Widgets.Widget MasterWidget
        {
            get { return masterWidget; }
        }

        protected override void OnRender(DrawingContext drawingContext)
        {
            Rect rect;

            Widgets.ArrowLineWidget alw = masterWidget as Widgets.ArrowLineWidget;
            if (alw != null)
            {
                rect = alw.OuterRect;
            }
            else
            {
                Widgets.ContentWidget cw = masterWidget as Widgets.ContentWidget;
                if (cw != null ||
                    masterWidget is Widgets.EllipseWidget ||
                    masterWidget is Widgets.RectangleWidget)
                {
                    rect = new Rect(this.AdornedElement.RenderSize);
                }