using DevExpress.XtraEditors;
using DevExpress.XtraGrid.Columns;
using DevExpress.XtraGrid.Views.Grid;
using DevExpress.XtraGrid.Views.Grid.ViewInfo;
using System.Drawing;
using System.Windows.Forms;
using System.Windows.Forms.VisualStyles;
using UAS_PLCDataReader.Entity;

namespace UAS_PLCDataReader.CustomerControl.GridViewWithSerialNum
{
    public partial class GridViewWithSerialNum : GridView
    {

        private Rectangle checkBoxColumnHeaderRect = Rectangle.Empty;

        private GridColumn checkBoxColumn = null;

        public GridViewWithSerialNum()
        {
            InitializeComponent();
            IndicatorWidth = 30;
        }

        /// <summary>
        /// 绘制行号
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void GridViewWithSerialNum_CustomDrawRowIndicator(object sender, RowIndicatorCustomDrawEventArgs e)
        {
            if (e.Info.IsRowIndicator && e.RowHandle >= 0)
            {
                e.Info.DisplayText = (e.RowHandle + 1).ToString();
            }
        }

        /// <summary>
        /// 绘制指定的列头的CheckBox
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void GridViewWithSerialNum_CustomDrawColumnHeader(object sender, ColumnHeaderCustomDrawEventArgs e)
        {
            if (e.Column != null && e.Column.FieldName == SystemInf.CheckedColumnName)
            {
                checkBoxColumnHeaderRect = e.Bounds;
                checkBoxColumn = e.Column;
                e.Column.Caption = " ";
                //须把列头标题设置为空
                e.Painter.DrawObject(e.Info);
                //在列头中心显示复选框
                int x = e.Bounds.X + (int)((e.Bounds.Width - CheckBoxRenderer.GetGlyphSize(e.Graphics, CheckBoxState.UncheckedNormal).Width) * 0.5);
                int y = e.Bounds.Y + (int)((e.Bounds.Height - CheckBoxRenderer.GetGlyphSize(e.Graphics, CheckBoxState.UncheckedNormal).Height) * 0.5);
                Point location = new Point(x, y);
                CheckBoxState checkBoxState;
                if (e.Column.Tag != null && e.Column.Tag.ToString() == "1")
                    checkBoxState = CheckBoxState.CheckedPressed;
                else
                    checkBoxState = CheckBoxState.UncheckedNormal;
                CheckBoxRenderer.DrawCheckBox(e.Graphics, location, checkBoxState);
                e.Handled = true;
            }
        }

        /// <summary>
        /// 执行全部勾选或者全部不勾选
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void GridViewWithSerialNum_MouseDown(object sender, MouseEventArgs e)
        {
            SyncCheckStatus(this, SystemInf.CheckedColumnName, e);
        }

        /// <summary>
        /// 绘制列头的CheckBox
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void GridViewWithSerialNum_MouseUp(object sender, MouseEventArgs e)
        {
            if (checkBoxColumnHeaderRect != Rectangle.Empty)
            {
                if (e.X > checkBoxColumnHeaderRect.X && e.X < (checkBoxColumnHeaderRect.X + checkBoxColumnHeaderRect.Width) && e.Y > checkBoxColumnHeaderRect.Y && e.Y < (checkBoxColumnHeaderRect.Y + checkBoxColumnHeaderRect.Height))
                {
                    if (checkBoxColumn.Tag != null && checkBoxColumn.Tag.ToString() == "1" && CheckRowCount == RowCount)
                        checkBoxColumn.Tag = "0";
                    //在这写未全选逻辑
                    else
                        checkBoxColumn.Tag = "1";
                    //在这写全选逻辑
                    //InvalidateColumnHeader(checkBoxColumn);
                }
            }
        }
        /// <summary>
        /// GridViewWithSerialNum_MouseUp事件最后执行，提前记录勾选的行号，防止后面统计错误
        /// </summary>
        static int CheckRowCount;
        public static void SyncCheckStatus(GridView view, string fieldeName, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                view.ClearSorting();
                view.PostEditor();
                GridHitInfo _info;
                Point _pt = view.GridControl.PointToClient(Control.MousePosition);
                _info = view.CalcHitInfo(_pt);
                if (_info.InColumn && _info.Column.FieldName.Equals(fieldeName))
                {
                    CheckRowCount = getCheckedCount(view, fieldeName);
                    if (CheckRowCount == view.DataRowCount)
                        UnChekAll(view, fieldeName);
                    else
                        CheckAll(view, fieldeName);
                }
            }
        }

        /// <summary>
        /// 通过勾选的行数和总行数来判断下一次点击是否全部勾选
        /// </summary>
        /// <param name="view"></param>
        /// <param name="filedName"></param>
        /// <returns></returns>
        private static int getCheckedCount(GridView view, string filedName)
        {
            int count = 0;
            for (int i = 0; i < view.DataRowCount; i++)
            {
                object _cellValue = view.GetRowCellValue(i, view.Columns[filedName]);
                if (_cellValue == null) continue;
                if (string.IsNullOrEmpty(_cellValue.ToString().Trim())) continue;
                bool _checkStatus = false;
                if (bool.TryParse(_cellValue.ToString() == "0" ? "false" : "true", out _checkStatus))
                {
                    if (_checkStatus)
                        count++;
                }
            }
            return count;
        }

        /// <summary>
        /// 设置全选
        /// </summary>
        /// <param name="view"></param>
        /// <param name="fieldName"></param>
        private static void CheckAll(GridView view, string fieldName)
        {
            for (int i = 0; i < view.DataRowCount; i++)
            {
                view.SetRowCellValue(i, fieldName, true);
            }
        }

        /// <summary>
        /// 设置全部不选 
        /// </summary>
        /// <param name="view"></param>
        /// <param name="fieldName"></param>
        private static void UnChekAll(GridView view, string fieldName)
        {
            for (int i = 0; i < view.DataRowCount; i++)
            {
                view.SetRowCellValue(i, fieldName, false);
            }
        }
    }
}