MTP2.0_CSharp/Muchinfo.Common/Fx4.0/Muchinfo.ChartClient/MuchInfo.Chart/MuchInfo.Chart.WPF/Primitives/Drawing/DrawingSelectionArea.cs

using MuchInfo.Chart.Data.EnumTypes;
using MuchInfo.Chart.Infrastructure.Helpers;
using MuchInfo.Chart.WPF.Controls.Utilities;
using MuchInfo.Chart.WPF.Helpers;
using MuchInfo.Chart.WPF.Primitives.Interfaces;
using System;
using System.Collections.Generic;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Shapes;

namespace MuchInfo.Chart.WPF.Primitives.Drawing
{
    public class DrawingSelectionArea
    {
        #region Fields

        private Chart _chart;
        private IDrawingTool _drawingTool;
        private bool _isMouseLeftDown;
        private bool _isMove;
        private Point _parentPosition;
        private IDrawingTool _preDrawingTool;
        private Line _selectionLine;

        #endregion Fields

        #region Constructors

        public DrawingSelectionArea(IDrawingTool aTool, Chart theChart)
        {
            this._isMouseLeftDown = false;
            this._drawingTool = aTool;
            this._chart = theChart;
            this.SelectionLine = new Line
            {
                Stroke = new SolidColorBrush(Colors.Transparent),
                StrokeThickness = 14.0,
                IsHitTestVisible = true,
                StrokeStartLineCap = PenLineCap.Round,
                StrokeEndLineCap = PenLineCap.Round,
                Cursor = Cursors.Hand
            };
        }

        #endregion Constructors

        #region Properties

        #region Public Properties

        public virtual Line SelectionLine
        {
            get
            {
                return this._selectionLine;
            }
            set
            {
                var mouseButtonEventHandler = new MouseButtonEventHandler(this.SelectionLine_MouseLeftButtonDown);
                var mouseEventHandler = new MouseEventHandler(this.SelectionLine_MouseLeave);
                var mouseEventHandler2 = new MouseEventHandler(this.SelectionLine_MouseOver);
                var mouseEventHandler3 = new MouseEventHandler(this.SelectionLine_MouseEnter);
                var mouseEventHandler4 = new MouseEventHandler(this.SelectionLine_LostMouseCapture);
                var mouseButtonEventHandler2 = new MouseButtonEventHandler(this.SelectionLine_MouseLeftButtonUp);
                var mouseButtonRightUp = new MouseButtonEventHandler(this.SelectionLine_MouseRightButtonUp);
                bool flag = this._selectionLine != null;
                if (flag)
                {
                    this._selectionLine.MouseLeftButtonDown -= (mouseButtonEventHandler);
                    this._selectionLine.MouseLeave -= (mouseEventHandler);
                    this._selectionLine.MouseMove -= (mouseEventHandler2);
                    this._selectionLine.MouseEnter -= (mouseEventHandler3);
                    this._selectionLine.LostMouseCapture -= (mouseEventHandler4);
                    this._selectionLine.MouseLeftButtonUp -= (mouseButtonEventHandler2);
                    this._selectionLine.MouseRightButtonUp -= mouseButtonRightUp;
                }
                this._selectionLine = value;
                flag = (this._selectionLine != null);
                if (flag)
                {
                    this._selectionLine.MouseLeftButtonDown += (mouseButtonEventHandler);
                    this._selectionLine.MouseLeave += (mouseEventHandler);
                    this._selectionLine.MouseMove += (mouseEventHandler2);
                    this._selectionLine.MouseEnter += (mouseEventHandler3);
                    this._selectionLine.LostMouseCapture += (mouseEventHandler4);
                    this._selectionLine.MouseLeftButtonUp += (mouseButtonEventHandler2);
                    //Up弹出Popup，PopupManager里用Down关闭Popup
                    this._selectionLine.MouseRightButtonUp += mouseButtonRightUp;
                }
            }
        }

        #endregion Public Properties

        #endregion Properties

        #region Methods

        #region Public Methods

        public List<FrameworkElement> GetControls()
        {
            return new List<FrameworkElement> { this.SelectionLine };
        }

        public void SetPosition(double aX1, double aY1, double aX2, double aY2)
        {
            this.SelectionLine.X1 = aX1;
            this.SelectionLine.Y1 = aY1;
            this.SelectionLine.X2 = aX2;
            this.SelectionLine.Y2 = aY2;
        }

        #endregion Public Methods

        #region Private Methods

        private void ShowToolEdit(object sender, EventArgs e)
        {
            this._drawingTool.ShowEditor((MouseEventArgs)e);
        }

        //private void DrawingSelectionArea_3645(object sender, EventArgs e)
        //{
        //    ((DrawingHorizontalLine)this.drawingTool).drawingHorizontalLine_3533((MouseEventArgs)e);
        //}

        private void Remove(object sender, EventArgs e)
        {
            this._drawingTool.Delete();
        }

        private void DrawingSelectionArea_3648(Point curPos)
        {
            bool flag = this._drawingTool != null;
            if (flag)
            {
                var parent = (FrameworkElement)this.SelectionLine.Parent;
                var height = (float)(parent.ActualHeight - 6.0);
                var width = (float)parent.ActualWidth;
                height = Math.Max(0, height);
                width = Math.Max(0, width);
                curPos.X = Math.Max(0, curPos.X);
                curPos.Y = Math.Max(0, curPos.Y);
                curPos.X = Math.Min(curPos.X, width);
                curPos.Y = Math.Min(curPos.Y, height);

                this._drawingTool.MovePlot(this._parentPosition, curPos, new Point(width, height));
            }
        }

        private void SelectionLine_LostMouseCapture(object sender, MouseEventArgs e)
        {
            this._chart.LockPainting = false;
            this._isMouseLeftDown = false;
            this._isMove = false;
            this._chart.Refresh();
        }

        private void SelectionLine_MouseEnter(object sender, MouseEventArgs e)
        {
            var flag = this._chart.PointerType != PointerType.Drawing;
            if (flag)
            {
                this.SelectionLine.Stroke = new SolidColorBrush(Color.FromArgb(125, 125, 125, 125));
                var flag1 = _chart.PointerType == PointerType.Erase;
                this.SelectionLine.Cursor = flag1 ? Cursors.Arrow : Cursors.Hand;
            }
        }

        private void SelectionLine_MouseLeave(object sender, MouseEventArgs e)
        {
            this.SelectionLine.Stroke = new SolidColorBrush(Colors.Transparent);

            if (_preDrawingTool == null) return;

            this._chart.CurrentDrawingTool = _preDrawingTool;
            this._chart.SetCursorImagePos(true, e);
            _preDrawingTool = null;
        }

        private void SelectionLine_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            this._chart.LockPainting = true;
            this._parentPosition = e.GetPosition((UIElement)this.SelectionLine.Parent);
            this._isMouseLeftDown = true;
            this._isMove = false;
            this.SelectionLine.CaptureMouse();
            bool flag = this._drawingTool != null;
            if (flag)
            {
                this._drawingTool.PrepareToMove();
            }
        }

        private void SelectionLine_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        {
            this._chart.LockPainting = false;
            bool flag = this._drawingTool != null && !this._isMove;
            if (flag)
            {
                bool flag2 = _chart.PointerType == PointerType.Erase;
                if (flag2)
                {
                    this._drawingTool.Delete();
                }
                else
                {
                    //右键菜单
                    //this.ShowContextMenu(e);
                }
            }
            else
            {
                bool flag2 = this._drawingTool != null;
                if (flag2)
                {
                    this.DrawingSelectionArea_3648(e.GetPosition((UIElement)this.SelectionLine.Parent));
                    flag2 = (this._drawingTool.OwnerSpec != null);
                    if (flag2)
                    {
                        this._drawingTool.OwnerSpec.ToolChanged(this._drawingTool);
                    }
                    this._isMouseLeftDown = false;
                    this._chart.Refresh();
                }
            }
            this.SelectionLine.ReleaseMouseCapture();
            this._isMouseLeftDown = false;
            this._isMove = false;
        }

        private void SelectionLine_MouseOver(object sender, MouseEventArgs e)
        {
            bool flag = this._chart != null && _chart.PointerType == PointerType.Erase;
            if (flag)
            {
                this._chart.SetCursorImagePos(true, e);
            }

            if (this._chart != null && this._chart.PointerType == PointerType.Drawing)
            {
                _preDrawingTool = this._chart.CurrentDrawingTool;
                this._chart.PointerType = PointerType.Cursor;
                this._chart.SetCursorImagePos(true, e);
            }

            flag = this._isMouseLeftDown;
            if (flag)
            {
                Point position = e.GetPosition((UIElement)this.SelectionLine.Parent);
                float num = GeometryHelper.DistanceBetweenPoints(this._parentPosition, position);
                if (num > 8f)
                {
                    this._isMove = true;
                }
                if (_isMove)
                {
                    this.DrawingSelectionArea_3648(position);
                }
            }
        }

        /// <summary>
        /// Up弹出Popup，PopupManager里用Down关闭Popup
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="MouseButtonEventArgs"/> instance containing the event data.</param>
        private void SelectionLine_MouseRightButtonUp(object sender, MouseButtonEventArgs e)
        {
            this._chart.LockPainting = false;
            if (this._drawingTool == null) return;

            ////使用上下文菜单代替Popup,以免以免父控件有右键菜单
            //this.ShowContextMenu(e);

            //修改popup父容器，即每个Chart提供RootPanel,不使用PopupRoot和TrueRootVisual
            //因为应用程序可能开多个图表窗口
            this.ShowPopupMenu(e);
            e.Handled = true;
        }

        private void ShowPopupMenu(MouseEventArgs e)
        {
            var popupMenu = new PopupMenu(this._chart.RootPanel) { FontSize = this._drawingTool.GetChartFontSize() };
            popupMenu.AddItem(LanguageManager.FindResource(LanguageConst.DrawingTool_MenuItem_Edit), ImageHelper.GetImage("PropertiesHS.png"), new EventHandler(this.ShowToolEdit));
            //bool flag = Conversions.ToBoolean((!Conversions.ToBoolean(this.drawingTool is drawingHorizontalLine && ((drawingHorizontalLine)this.drawingTool).drawingHorizontalLine_3532()) || !Conversions.ToBoolean(AlertManager.AlertsAllowed())) ? false : true);
            //if (flag)
            //{
            //    PopupMenu.AddItem("Set Alert", ImageMan.GetImage("SymbolBolt.png"), new EventHandler(this.DrawingSelectionArea_3645));
            //}
            popupMenu.AddSeperator();
            popupMenu.AddItem(LanguageManager.FindResource(LanguageConst.DrawingTool_MenuItem_Remove), ImageHelper.GetImage("DeleteHS.png"), new EventHandler(this.Remove));

            popupMenu.Show(e, new Point(-5.0, -5.0));
        }

        private void ShowContextMenu(MouseEventArgs e)
        {
            var contextMenu = new ContextMenu();
            contextMenu.Items.Add(MenuItemHelper.CreateMenuItem(LanguageManager.FindResource(LanguageConst.DrawingTool_MenuItem_Edit), ImageHelper.GetImage("PropertiesHS.png"), new EventHandler(this.ShowToolEdit)));
            //bool flag = Conversions.ToBoolean((!Conversions.ToBoolean(this.drawingTool is drawingHorizontalLine && ((drawingHorizontalLine)this.drawingTool).drawingHorizontalLine_3532()) || !Conversions.ToBoolean(AlertManager.AlertsAllowed())) ? false : true);
            //if (flag)
            //{
            //    PopupMenu.AddItem("Set Alert", ImageMan.GetImage("SymbolBolt.png"), new EventHandler(this.DrawingSelectionArea_3645));
            //}

            contextMenu.Items.Add(new Separator());
            contextMenu.Items.Add(MenuItemHelper.CreateMenuItem(LanguageManager.FindResource(LanguageConst.DrawingTool_MenuItem_Remove), ImageHelper.GetImage("DeleteHS.png"), new EventHandler(this.Remove)));
            this._selectionLine.ContextMenu = contextMenu;
            this._selectionLine.ContextMenu.IsOpen = true;
        }

        #endregion Private Methods

        #endregion Methods
    }
}