kev/Drawer/Module/GeoSigmaViewer/DrawToolRectangularCSGrid.cs

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

namespace GeoSigmaViewer
{
    public class DrawToolRectangularCSGrid : DrawTool
    {
        private MouseMoveResult mmResult;
        private RectangularCSGridDialog dlg = null;
        public DrawToolRectangularCSGrid()
        {
            ToolCursor = DrawCursors.Range;
            ItemType = DrawItemType.ITEM_GRID;
            mmResult = new MouseMoveResult();
        }
        public override void Start()
        {
            drawer.Cursor = DrawCursors.Range;
        }

        public override void End()
        {
            drawer.Cursor = DrawCursors.Select;

            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);
            //base.OnLButtonDown(drawArea, e);
        }

        public override void OnMouseMove(Drawer drawArea, MouseEventArgs e)
        {
            //drawArea.Cursor=ToolCursor;
            if (e.Button == MouseButtons.Left)
            {
                Graphics g = drawArea.CreateGraphics();
                drawArea.Geo.ItemMouseMove(g.GetHdc(), e.X, e.Y, ref mmResult);
            }
        }

        public override void OnLButtonUp(Drawer drawArea, MouseEventArgs e)
        {
            drawArea.Geo.OnLButtonUp(e.X, e.Y);

            if (dlg != null)
            {
                if (dlg.IsAccessible)
                    dlg.Close();
            }
            dlg = new RectangularCSGridDialog(ref drawer);
            dlg.Show();
        }
    }
}