BuildProcess/FlowChartModule/绘制模块/Connection_Point.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Controls;
using System.Windows.Media.Effects;
using System.Windows.Media;
using System.Windows.Shapes;
using System.Windows;

namespace FlowChartModule.绘制模块
{
    public class Connection_Point
    {

        Canvas _canvas;
        public  Point _point;
        public static bool  _isMouseDown=false;
        public  bool  isMouseDown=false;
        public List<Connection_Line> _connection_Lines ;
        public Ellipse ellipse = new Ellipse();
        public Connection_Point(Point point, Canvas canvas, List<Connection_Line> connection_Lines)
        {
            _connection_Lines = connection_Lines;
            _canvas=canvas;
            // 创建一个 Ellipse 元素
           
            ellipse.Width = 12;
            ellipse.Height = 12;
            ellipse.Fill = Brushes.Transparent;
            ellipse.StrokeThickness = 2;
            ellipse.Stroke= Brushes.Transparent;
            ellipse.MouseLeftButtonDown += Ellipse_MouseLeftButtonDown;
            ellipse.MouseLeftButtonUp += Ellipse_MouseLeftButtonUp;
            ellipse.MouseEnter += Ellipse_MouseEnter;
            ellipse.MouseLeave += Ellipse_MouseLeave;
            // 设置 Ellipse 元素在 Canvas 中的位置
            Canvas.SetLeft(ellipse, point.X);
            Canvas.SetTop(ellipse, point.Y);
            // 将 Ellipse 元素添加到 Canvas 中
            canvas.Children.Add(ellipse);   
        }

        private void Ellipse_MouseLeave(object sender, System.Windows.Input.MouseEventArgs e)
        {
            _canvas.Children.Remove(ellipse);
            ellipse.Stroke = Brushes.Transparent;
            _canvas.Children.Add(ellipse);
        }

        private void Ellipse_MouseEnter(object sender, System.Windows.Input.MouseEventArgs e)
        {
            _canvas.Children.Remove(ellipse);
            ellipse.Fill = Brushes.Green;
            ellipse.Stroke = Brushes.White;
            _canvas.Children.Add(ellipse);
            
        }

        private void Ellipse_MouseLeftButtonUp(object sender, System.Windows.Input.MouseButtonEventArgs e)
        {
            
            isMouseDown = false;
           // ((Ellipse) sender).ReleaseMouseCapture();
        }

        private void Ellipse_MouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
        {
            _isMouseDown = true;
            isMouseDown = true;
           //( ( Ellipse ) sender ).CaptureMouse();

        }
    }
}