using DevExpress.XtraCharts;
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Runtime;
using System.Windows.Forms;

namespace IStation.WinFrmUI.Monitor
{
    public partial class TimeValueEasyChartView : DevExpress.XtraEditors.XtraUserControl
    {
        public TimeValueEasyChartView()
        {
            InitializeComponent();

            _boxSelHelper = new ChartBoxSelHelper(chartControl1);
            _boxSelHelper.BoxSelCompletedEvent += _boxSelHelper_BoxSelCompletedEvent;
            _diagram = chartControl1.Diagram as SwiftPlotDiagram;
            _defaultSeries = chartControl1.Series[0];
        }


        #region  BoxSelHelper

        private string _boxSelTag;//框选标签

        //开始框选
        public void StartBoxSel(string tag)
        {
            _boxSelTag = tag;
            _diagram.EnableAxisXScrolling = false;
            _diagram.EnableAxisXZooming = false;
            _boxSelHelper.StartBoxSel();
        }


        //结束框选
        public void CloseBoxSel()
        {
            _boxSelHelper.CloseBoxSel();
        }

        private List<SeriesPoint> _boxSelSeriesPointList = null;//框选点

        //框选辅助类
        private void _boxSelHelper_BoxSelCompletedEvent(MouseEventArgs obj)
        {
            _diagram.EnableAxisXScrolling = true;
            _diagram.EnableAxisXZooming = true;
            if (_boxSelHelper == null)
                return;
            _boxSelSeriesPointList = _boxSelHelper.CalcuDataTimeSelSeriesPoints(new List<Series>() { _defaultSeries });
            if (_boxSelSeriesPointList == null || _boxSelSeriesPointList.Count < 1)
            {
                _boxSelHelper.CloseBoxSel();
                return;
            }

            popMenu.ShowPopup(MousePosition);
        }


        //确认
        private void barBtnOk_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            if (BoxSelCompleteEvent != null)
            {
                var list = _boxSelSeriesPointList.Select(x => x.Tag as TimeValue).ToList();
                BoxSelCompleteEvent.Invoke(_boxSelTag, list);
            }
            _boxSelSeriesPointList = null;
            _boxSelHelper.CloseBoxSel();
        }

        #endregion


        private SwiftPlotDiagram _diagram;//图表   
        private Series _defaultSeries;

        private ChartBoxSelHelper _boxSelHelper = null;//框选辅助类  
        public event Action<string, List<TimeValue>> BoxSelCompleteEvent = null;//框选完成事件


        /// <summary>
        /// 初始化默认系列
        /// </summary>
        /// <param name="timeValues">数据源</param>
        public void InitialDefaultSeries(IEnumerable<TimeValue> timeValues)
        {
            var lays = chartControl1.ShowOverlay();
            if (timeValues == null || timeValues.Count() < 1)
            {
                _defaultSeries.BindToData(timeValues, null);
            }
            else
            {
                _defaultSeries.BindToData(timeValues, "Time", "Value");
            }
            GCSettings.LargeObjectHeapCompactionMode = GCLargeObjectHeapCompactionMode.CompactOnce;
            GC.Collect(2, GCCollectionMode.Forced);
            GC.WaitForFullGCComplete();
            lays.Close();
        }

        public void SetAxisXTitle(string title)
        {
            _diagram.AxisX.Title.Text = title;
        }

        public void SetAxisYTitle(string title)
        {
            _diagram.AxisY.Title.Text = title;
        }

        public void SetTimeAxisX(DateTimeMeasureUnit unit)
        {
            //   _diagram.AxisX.DateTimeScaleOptions.MeasureUnit = unit;
        }


    }
}