Metis_xctg/Annotation/FieldView/ToolViewPolygon.cs

using PaintDotNet.Annotation.Enum;
using System.Drawing;
using System.Windows.Forms;

namespace PaintDotNet.Annotation.FieldView
{
    /// <summary>
    /// 多边形视场工具
    /// </summary>
    public class ToolViewPolygon : ToolObject
    {
        private static ViewPolygon viewPolygon;

        /// <summary>
        /// 鼠标按下事件
        /// </summary>
        /// <param name="drawArea"></param>
        /// <param name="e"></param>
        public static void OnMouseDown(ISurfaceBox surfaceBox, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                Point p = GetEventPointInArea(surfaceBox, e.Location);
                if (viewPolygon == null)
                {
                    viewPolygon = new ViewPolygon(p.X, p.Y);
                    viewPolygon.ISurfaceBox = surfaceBox;
                    viewPolygon.combineMode = surfaceBox.GetCombineMode();
                    AddNewObjectForView(surfaceBox, viewPolygon);
                }
                else
                {
                    viewPolygon.setNextPoint(p);
                }
                surfaceBox.Refresh();
            }
            else
            {
                if(viewPolygon !=null && viewPolygon.GetPoints().Count<=2)
                {
                    surfaceBox.GraphicsList.RemoveObj(viewPolygon);
                    viewPolygon = null;
                }
                surfaceBox.ActiveTool = DrawToolType.Pointer;
                //OnMouseUpTwo(surfaceBox, e);
                surfaceBox.GraphicsList.OnSelectChanged();
            }
        }

        /// <summary>
        /// 鼠标移动事件
        /// </summary>
        /// <param name="drawArea"></param>
        /// <param name="e"></param>
        public static void OnMouseMove(ISurfaceBox drawArea, MouseEventArgs e)
        {
            //base.OnMouseMove(drawArea, e);
        }

        /// <summary>
        /// 覆盖父类的鼠标抬起事件，什么都不做
        /// </summary>
        /// <param name="drawArea"></param>
        /// <param name="e"></param>
        public static void OnMouseUp(ISurfaceBox drawArea, MouseEventArgs e)
        {
            //OnMouseUpTwo(drawArea, e);
        }

        public static void OnMouseClick(ISurfaceBox drawArea, MouseEventArgs e)
        {

        }

        /// <summary>
        /// 鼠标左键双击
        /// </summary>
        /// <param name="drawArea"></param>
        /// <param name="e"></param>
        public static void OnMouseLeftDoubleClick(ISurfaceBox surfacebox, MouseEventArgs e)
        {

        }

        /// <summary>
        /// 删除按键
        /// </summary>
        /// <param name="surfacebox"></param>
        /// <param name="e"></param>
        public static void OnDelKeyDown(ISurfaceBox surfacebox, MouseEventArgs e)
        {

        }

        /// <summary>
        /// 删除划痕处理&污迹处理选择区域的痕迹
        /// </summary>
        /// <param name="surfacebox"></param>
        /// <param name="e"></param>
        public static void OnDel2KeyDown(ISurfaceBox surfacebox, MouseEventArgs e)
        {

        }

        /// <summary>
        /// 清空全部时调用该方法，将可能未绘制完的对象清空
        /// </summary>
        public static void beginWithNewObject()
        {
            viewPolygon = null;
        }
    }
}