kev/Drawer/Module/GeoSigmaViewer/DrawToolProportion.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace GeoSigmaViewer
{
    class DrawToolProportion : DrawTool
    {
        private ProportionDialog dlg;
        public DrawToolProportion()
        {
            ToolCursor = DrawCursors.Select;
            ItemType = DrawItemType.ITEM_PROPORTION;
        }
        public override void Start()
        {
            if (dlg != null)
            {
                if (dlg.IsAccessible)
                    dlg.Close();
                dlg = null;
            }

            drawer.Geo.CreateProportion(); //创建比例尺
            drawer.Geo.EnableRedraw(true);
            drawer.ReDraw();

            dlg = new ProportionDialog(ref drawer);
            dlg.Show();
        }
        public override void End()
        {
            if (dlg != null)
            {
                if(dlg.IsAccessible)
                    dlg.Close();

                dlg = null;
            }
        }
        public override void OnLButtonDown(Drawer drawArea, MouseEventArgs e)
        {
            drawArea.Geo.OnLButtonDown(e.X, e.Y);
            drawArea.Geo.EnableRedraw(true);
            drawArea.ReDraw();

            ProportionData data = new ProportionData();
            drawArea.Geo.Proportion_GetData(ref data);
            //dlg.SetXY(data.x, data.y);
        }
    }
}