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 DrawToolSelect : DrawTool
    {
        private MouseMoveResult mmResult;
        public DrawToolSelect()
        {
            ToolCursor=DrawCursors.Select;
            ItemType =DrawItemType.ITEM_SELECT;
            mmResult = new MouseMoveResult();
        }
        public override void OnMouseClick(Drawer drawArea, MouseEventArgs e)
        {
            base.OnMouseClick(drawArea, e);
        }

        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);
            }

            int type = drawArea.Geo.GetTrackerHandleCursorType(e.X, e.Y);
            if (cursorType != type && e.Button != MouseButtons.Left)
            {
                cursorType = type;
                SetCursor(drawArea, cursorType);
            }
            //Console.WriteLine("handleKind:"+ handleKind);
        }

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

        private void SetCursor(Drawer drawArea, int type)
        {
            //0--左下箭头    1--垂直箭头        2--右下箭头         3--水平箭头  
            //4--旋转箭头    5--水平剪切箭头    6--垂直剪切箭头     7--平移箭头
            //-1 出错
            switch (type)
            {
                case 0:
                    drawArea.Cursor = DrawCursors.LBArrow;
                    break;
                case 1:
                    drawArea.Cursor = DrawCursors.VArrow;
                    break;
                case 2:
                    drawArea.Cursor = DrawCursors.RBArrow;
                    break;
                case 3:
                    drawArea.Cursor = DrawCursors.HArrow;
                    break;
                case 4:
                    drawArea.Cursor = DrawCursors.RotationArrow;
                    break;
                case 5:
                    drawArea.Cursor = DrawCursors.HShearArrow;
                    break;
                case 6:
                    drawArea.Cursor = DrawCursors.VShearArrow;
                    break;
                case 7:
                    drawArea.Cursor = DrawCursors.CurveMovePoint;
                    break;
                default:
                    drawArea.Cursor = ToolCursor;
                    break;

            }
            //DrawCursors
        }
        private int cursorType = -1;
    }
}