LunarMind/ConceptWidgets/Adorners/RectangleMarkAdorner.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;

namespace SHomeWorkshop.LunarConcept.Adorners
{
    /// <summary>
    /// 创建时间：2012年4月9日
    /// 创建者：  杨震宇
    /// 
    /// 主要用途：RectangleWidget使用的标记装饰器。一般用来显示“ＡＢＣＤ”等答案字符。
    /// 
    /// </summary>
    public class RectangleMarkAdorner : Adorner
    {
        /// <summary>
        /// [构造方法]
        /// </summary>
        /// <param name="adornedElement">应传入RectangleWidget的Canvas。</param>
        public RectangleMarkAdorner(UIElement adornedElement, Widgets.RectangleWidget rectangleWidget)
            : 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.masterRectangleWidget = rectangleWidget;

            this.Cursor = Cursors.Hand;
            this.MouseEnter += new MouseEventHandler(MaskAdorner_MouseEnter);
            this.MouseLeave += new MouseEventHandler(MaskAdorner_MouseLeave);
        }

        void MaskAdorner_MouseLeave(object sender, MouseEventArgs e)
        {
            this.InvalidateVisual();
        }

        void MaskAdorner_MouseEnter(object sender, MouseEventArgs e)
        {
            this.InvalidateVisual();
        }

        private Widgets.RectangleWidget masterRectangleWidget;

        public Widgets.RectangleWidget MasterRectangleWidget
        {
            get { return masterRectangleWidget; }
            set { masterRectangleWidget = value; }
        }

        public Rect MasterRect { get; set; }

        protected override void OnRender(DrawingContext drawingContext)
        {
            if (masterRectangleWidget == null) return;
            if (masterRectangleWidget.MarkText == null || masterRectangleWidget.MarkText.Length <= 0) return;