MTP2.0_CSharp/Muchinfo.Common/Fx4.0/Muchinfo.ChartClient/MuchInfo.Chart/MuchInfo.Chart.WPF/Controls/Drawing/DrawingChannelGrab.xaml.cs

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

namespace MuchInfo.Chart.WPF.Controls.Drawing
{
    /// <summary>
    /// DrawingChannelGrab.xaml 的交互逻辑
    /// </summary>
    public partial class DrawingChannelGrab : UserControl
    {
        private IChannelDrawing _channelDrawing;
        private Chart _chart;
        private bool _isMouseEnter;
        private bool _isMouseDown;
        //private bool DrawingChannelGrab_833;

        public DrawingChannelGrab()
        {
            base.MouseMove -= (new MouseEventHandler(this.theBorder_MouseMove));
            base.MouseMove += (new MouseEventHandler(this.theBorder_MouseMove));
            base.MouseEnter -= (new MouseEventHandler(this.theBorder_MouseEnter));
            base.MouseEnter += (new MouseEventHandler(this.theBorder_MouseEnter));
            base.MouseLeave -= (new MouseEventHandler(this.theBorder_MouseLeave));
            base.MouseLeave += (new MouseEventHandler(this.theBorder_MouseLeave));
            base.LostMouseCapture -= (new MouseEventHandler(this.DrawingPointGrab_LostMouseCapture));
            base.LostMouseCapture += (new MouseEventHandler(this.DrawingPointGrab_LostMouseCapture));
            base.MouseLeftButtonDown -= (new MouseButtonEventHandler(this.theBorder_MouseLeftButtonDown));
            base.MouseLeftButtonDown += (new MouseButtonEventHandler(this.theBorder_MouseLeftButtonDown));
            base.MouseLeftButtonUp -= (new MouseButtonEventHandler(this.theBorder_MouseLeftButtonUp));
            base.MouseLeftButtonUp += (new MouseButtonEventHandler(this.theBorder_MouseLeftButtonUp));
            this._isMouseEnter = false;
            this._isMouseDown = false;
            this.InitializeComponent();
        }
        public void Setup(IChannelDrawing channelDrawing, Chart chart)
        {
            this.InitializeComponent();
            this.Cursor = Cursors.Hand;
            this._channelDrawing = channelDrawing;
            this._chart = chart;
            this.arrowPath.Visibility = Visibility.Collapsed;
            this.dot.Visibility = Visibility.Visible;
            this.LayoutRoot.BorderBrush = new SolidColorBrush(Colors.Transparent);
            this.LayoutRoot.Background = new SolidColorBrush(Color.FromArgb(50, 120, 120, 120));
            this.dot.Stroke = this._chart.IsDarkBackground ? new SolidColorBrush(Color.FromArgb(150, 255, 255, 255)) :
                new SolidColorBrush(Color.FromArgb(150, 0, 0, 0));
        }
        internal void DrawingChannelGrab_2829(bool isTop)
        {
            if (isTop)
            {
                this.ShowChannelGrab((double)this._channelDrawing.ChanX(), (double)this._channelDrawing.TopY());
            }
            else
            {
                this.ShowChannelGrab((double)this._channelDrawing.ChanX(), (double)this._channelDrawing.BotY());
            }
        }
        private DependencyObject GetGreatGrandparent()
        {
            var parent = this.Parent as FrameworkElement;
            if (parent == null) return null;
            var grandparent = parent.Parent as FrameworkElement;
            return grandparent == null ? null : grandparent.Parent;
        }

        private void ShowChannelGrab(double aX, double aY)
        {
            this.SetValue(Canvas.LeftProperty, aX - 7.0);
            this.SetValue(Canvas.TopProperty, aY - 7.0);
            bool flag = this.GetGreatGrandparent() != null && this.GetGreatGrandparent() is FrameworkElement;
            if (flag)
            {
                var frameworkElement = (FrameworkElement)this.GetGreatGrandparent();
                bool flag2 = true;
                flag = (aY - 10.0 > frameworkElement.ActualHeight);
                if (flag)
                {
                    flag2 = false;
                }
                else
                {
                    flag = (aY + 10.0 < 0.0);
                    if (flag)
                    {
                        flag2 = false;
                    }
                    else
                    {
                        flag = (aX - 10.0 > frameworkElement.ActualWidth);
                        if (flag)
                        {
                            flag2 = false;
                        }
                        else
                        {
                            flag = (aX + 10.0 < 0.0);
                            if (flag)
                            {
                                flag2 = false;
                            }
                        }
                    }
                }
                flag = flag2;
                this.Visibility = flag ? Visibility.Visible : Visibility.Collapsed;
            }
        }
        private void DrawingPointGrab_LostMouseCapture(object sender, MouseEventArgs e)
        {
            if (this._isMouseDown)
            {
                this._isMouseDown = false;
                this._chart.LockPainting = false;
                this._chart.Refresh();
                this.DrawingChannelGrab_2835();
            }
        }
        private void theBorder_MouseEnter(object sender, MouseEventArgs e)
        {
            this._isMouseEnter = true;
            this.DrawingChannelGrab_2835();
        }
        private void theBorder_MouseLeave(object sender, MouseEventArgs e)
        {
            this._isMouseEnter = false;
            this.DrawingChannelGrab_2835();
        }
        private void DrawingChannelGrab_2835()
        {
            bool flag = this._isMouseEnter || this._isMouseDown;
            if (flag)
            {
                this.arrowPath.Visibility = Visibility.Visible;
                this.dot.Visibility = Visibility.Collapsed;
                flag = this._chart.IsDarkBackground;
                this.arrowPath.Stroke = flag ? new SolidColorBrush(Colors.Yellow) : new SolidColorBrush(Colors.Blue);
            }
            else
            {
                this.arrowPath.Visibility = Visibility.Collapsed;
                flag = this._chart.IsDarkBackground;
                this.dot.Stroke = flag ? new SolidColorBrush(Color.FromArgb(150, 255, 255, 255)) : new SolidColorBrush(Color.FromArgb(150, 0, 0, 0));
                this.dot.Visibility = Visibility.Visible;
            }
        }
        private void theBorder_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            if (this._chart != null && this._chart.PointerType == PointerType.Erase)
            {
                this._channelDrawing.Delete();
            }
            else
            {
                this._chart.LockPainting = true;
                this.CaptureMouse();
                this.BuildChannelGrab(e);
                this._isMouseDown = true;
                this.DrawingChannelGrab_2835();
            }
        }
        private void theBorder_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        {
            bool flag = this._isMouseDown;
            if (flag)
            {
                this.ReleaseMouseCapture();
                this.BuildChannelGrab(e);
                flag = (this._channelDrawing.OwnerSpec != null);
                if (flag)
                {
                    this._channelDrawing.OwnerSpec.ToolChanged(this._channelDrawing);
                }
                this._isMouseDown = false;
                this._chart.LockPainting = false;
                this._chart.Refresh();
                this.DrawingChannelGrab_2835();
            }
        }
        private void theBorder_MouseMove(object sender, MouseEventArgs e)
        {
            if (this._chart != null && this._chart.PointerType == PointerType.Erase)
            {
                this._chart.SetCursorImagePos(true, e);
            }

            if (this._isMouseDown)
            {
                this.BuildChannelGrab(e);
            }
        }
        private void BuildChannelGrab(MouseEventArgs e)
        {
            bool flag = this.GetGreatGrandparent() != null && this.GetGreatGrandparent() is FrameworkElement;
            if (flag)
            {
                Point position = e.GetPosition((UIElement)this.GetGreatGrandparent());
                var frameworkElement = (FrameworkElement)this.GetGreatGrandparent();
                var num = (float)(frameworkElement.ActualHeight - 6.0);
                flag = (num < 0f);
                if (flag)
                {
                    num = 0f;
                }
                var num2 = (float)frameworkElement.ActualWidth;
                flag = (num2 < 0f);
                if (flag)
                {
                    num2 = 0f;
                }
                flag = (position.X < 0.0);
                if (flag)
                {
                    position.X = (0.0);
                }
                flag = (position.Y < 0.0);
                if (flag)
                {
                    position.Y = (0.0);
                }
                flag = (position.X > (double)num2);
                if (flag)
                {
                    position.X = ((double)num2);
                }
                flag = (position.Y > (double)num);
                if (flag)
                {
                    position.Y = ((double)num);
                }
                this.ShowChannelGrab(position.X, position.Y);
                this._channelDrawing.ChangeWidth((float)position.Y);
            }
        }
    }
}