MTP2.0_CSharp/Muchinfo.Common/Fx4.0/Muchinfo.ChartClient/MuchInfo.Chart/MuchInfo.Chart.WPF/Controls/DateScaling/DateMarginSplitter.xaml.cs

using MuchInfo.Chart.Data.EnumTypes;
using MuchInfo.Chart.WPF.Primitives;
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Media;

namespace MuchInfo.Chart.WPF.Controls.DateScaling
{
    /// <summary>
    /// DateMarginSplitter.xaml 的交互逻辑
    /// </summary>
    public partial class DateMarginSplitter : UserControl
    {
        private AllDateScaler dataScalers;
        private Canvas parentCanvas;
        private Chart _chart;
        private double _parentPosition;
        private float _futureSplitPercent;
        private bool _isMouseDown;
        private DateTime _desiredEndDate;
        private bool _isMouseEnter;
        //private bool DateMarginSplitter_755;

        public DateMarginSplitter(Canvas aParent, Chart aChart)
        {
            base.SizeChanged += (new SizeChangedEventHandler(this.DateMarginSplitter_SizeChanged));
            this._futureSplitPercent = 0f;
            this._isMouseDown = false;
            this._isMouseEnter = false;
            this.InitializeComponent();
            this.parentCanvas = aParent;
            this._chart = aChart;
            this.Cursor = Cursors.SizeWE;
        }
        internal void DateMarginSplitter_2672(AllDateScaler aScaler)
        {
            this.dataScalers = aScaler;
            this.SetCenterLineVisibility();
        }
        private void SetCenterLineVisibility()
        {
            this.centerLine.Visibility = (this._isMouseEnter || this._isMouseDown) ? Visibility.Visible : Visibility.Collapsed;
        }

        private void theBorder_LostMouseCapture(object sender, MouseEventArgs e)
        {
            this._isMouseDown = false;
            this.SetCenterLineVisibility();
        }
        private void theBorder_MouseEnter(object sender, MouseEventArgs e)
        {
            this._isMouseEnter = true;
            this.SetCenterLineVisibility();
        }
        private void theBorder_MouseLeave(object sender, MouseEventArgs e)
        {
            this._isMouseEnter = false;
            this.SetCenterLineVisibility();
        }
        private void theBorder_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            bool flag = _chart.PointerType != PointerType.Drawing;
            if (flag)
            {
                this.theBorder.CaptureMouse();
                this._isMouseDown = true;
                this._parentPosition = e.GetPosition(this.parentCanvas).X;
                this._futureSplitPercent = this.dataScalers.FutureSplitPercent;
                this._desiredEndDate = this.dataScalers.DesiredEndDate;
            }
        }
        private void theBorder_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        {
            if (_isMouseDown)
            {
                this._isMouseDown = false;
                this.RefreshChart(e.GetPosition(this.parentCanvas).X);
            }
            this.theBorder.ReleaseMouseCapture();
        }
        private void theBorder_MouseMove(object sender, MouseEventArgs e)
        {
            if (_isMouseDown)
            {
                this.RefreshChart(e.GetPosition(this.parentCanvas).X);
            }
        }
        private void RefreshChart(double inX)
        {
            double num = inX;
            if (inX < (double)this.dataScalers.WidthWithBarBuffer() * 0.1)
            {
                num = (double)this.dataScalers.WidthWithBarBuffer() * 0.1;
            }
            double num2 = num - this._parentPosition;
            double num3 = (double)this.dataScalers.WidthWithBarBuffer();
            if (num3 > 0.0)
            {
                double num4 = -1.0 * num2 / num3;
                this.dataScalers.FutureSplitPercent = (float)((double)this._futureSplitPercent + num4);
                if (this._futureSplitPercent != this.dataScalers.FutureSplitPercent && DateTime.Compare(this._desiredEndDate, DateTime.MaxValue) != 0)
                {

                    if (Math.Abs(this._futureSplitPercent - this.dataScalers.FutureSplitPercent) > 0.2)
                    {
                        //this._futureSplitPercent = this._futureSplitPercent;
                    }

                    int num5 = (int)Math.Round((this.dataScalers.FutureSplitPercent - this._futureSplitPercent) * this.dataScalers.NumBars);
                    if (num5 != 0)
                    {
                        int num6 = this.dataScalers.IndexFromDate(this._desiredEndDate);
                        num6 += num5;
                        if (num6 >= 0 && num6 < this.dataScalers.Count())
                        {
                            this.dataScalers.DesiredEndDate = this.dataScalers.DateValue(num6);
                        }
                    }
                }

                this._chart.Refresh(true);
            }
        }
        private void DateMarginSplitter_SizeChanged(object sender, SizeChangedEventArgs e)
        {
            this.centerLine.Y2 = (this.lineRowDef.ActualHeight);
        }

    }
}