MTP2.0_CSharp/Muchinfo.Common/Fx4.0/Muchinfo.ChartClient/MuchInfo.Chart/MuchInfo.Chart.Infrastructure/Controls/DraggableWindowHeader.xaml.cs

using MuchInfo.Chart.Infrastructure.Helpers;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Input;
using System.Windows.Media;

namespace MuchInfo.Chart.Infrastructure.Controls
{
    /// <summary>
    /// DraggableWindowHeader.xaml 的交互逻辑
    /// </summary>
    public partial class DraggableWindowHeader : UserControl
    {
        #region Fields

        private Point _currentPoint;
        private Popup _popup;
        private Point _popupPoint;

        #endregion Fields

        #region Constructors

        public DraggableWindowHeader()
        {
            this.InitializeComponent();
        }

        #endregion Constructors

        #region Delegates

        public delegate void DeleteClickedEventHandler();

        #endregion Delegates

        #region Events

        public event DraggableWindowHeader.DeleteClickedEventHandler DeleteClicked;

        #endregion Events

        #region Properties

        #region Public Properties

        public CornerRadius CornerRadius
        {
            get
            {
                return this.borderMain.CornerRadius;
            }
            set
            {
                this.borderMain.CornerRadius = value;
            }
        }

        public Brush DeleteButtonForeColor
        {
            get
            {
                return this.borderDelete.BorderBrush;
            }
            set
            {
                this.borderDelete.BorderBrush = value;
                this.txtDelete.Foreground = value;
            }
        }

        public Brush HeaderBackGround
        {
            get
            {
                return this.borderMain.Background;
            }
            set
            {
                this.borderMain.Background = value;
            }
        }

        public Brush HeaderBorderColor
        {
            get
            {
                return this.borderMain.BorderBrush;
            }
            set
            {
                this.borderMain.BorderBrush = value;
            }
        }

        public double HeaderBorderThickness
        {
            get
            {
                return this.borderMain.BorderThickness.Left;
            }
            set
            {
                this.borderMain.BorderThickness = new Thickness(value, value, value, 0.0);
            }
        }

        public ImageSource HeaderImage
        {
            get
            {
                return this.headerIcon.Source;
            }
            set
            {
                bool flag = value == null;
                if (flag)
                {
                    this.headerIcon.Visibility = Visibility.Collapsed;
                }
                else
                {
                    this.headerIcon.Visibility = Visibility.Visible;
                }
                this.headerIcon.Source = value;
            }
        }

        public Panel RootPanel { get; set; }

        public string HeaderText
        {
            get
            {
                return this.txtHeader.Text;
            }
            set
            {
                this.txtHeader.Text = value;
            }
        }

        public bool ShowDeleteButton
        {
            get
            {
                return this.borderDelete.Visibility == 0;
            }
            set
            {
                this.borderDelete.Visibility = value ? Visibility.Visible : Visibility.Collapsed;
            }
        }

        #endregion Public Properties

        #endregion Properties

        #region Methods

        #region Protected Methods

        protected virtual void OnDeleteClicked()
        {
            var handler = DeleteClicked;
            if (handler != null) handler();
        }

        #endregion Protected Methods

        #region Private Methods

        private void borderDelete_MouseEnter(object sender, MouseEventArgs e)
        {
            this.txtDelete.Foreground = new SolidColorBrush(ColorHelper.Firebrick);
        }

        private void borderDelete_MouseLeave(object sender, MouseEventArgs e)
        {
            this.txtDelete.Foreground = this.borderDelete.BorderBrush;
        }

        private void borderDelete_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            OnDeleteClicked();
        }

        private void borderGrab_LostMouseCapture(object sender, MouseEventArgs e)
        {
            this._popup = null;
        }

        private void borderGrab_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            this._popup = this.GetPopup(this);
            bool flag = this._popup != null;
            if (flag)
            {
                this._currentPoint = e.GetPosition(RootPanel);
                this._popupPoint = new Point(this._popup.HorizontalOffset, this._popup.VerticalOffset);
                this.borderGrab.CaptureMouse();
            }
        }

        private void borderGrab_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        {
            bool flag = this._popup != null;
            if (flag)
            {
                this.ShowPopup(e);
                this._popup = null;
                this.borderGrab.ReleaseMouseCapture();
            }
        }

        private void borderGrab_MouseMove(object sender, MouseEventArgs e)
        {
            bool flag = this._popup != null;
            if (flag)
            {
                this.ShowPopup(e);
            }
        }

        private Popup GetPopup(FrameworkElement aControl)
        {
            bool flag = aControl.Parent != null && aControl.Parent is Popup;
            Popup result;
            if (flag)
            {
                var popup = (Popup)aControl.Parent;
                result = popup;
            }
            else
            {
                flag = (aControl.Parent != null && aControl.Parent is FrameworkElement);
                result = flag ? this.GetPopup((FrameworkElement)aControl.Parent) : null;
            }
            return result;
        }

        private void ShowPopup(MouseEventArgs e)
        {
            var position = e.GetPosition(RootPanel);
            var point = new Point(position.X - this._currentPoint.X + this._popupPoint.X, position.Y - this._currentPoint.Y + this._popupPoint.Y);
            this._popup.VerticalOffset = (point.Y);
            this._popup.HorizontalOffset = (point.X);
            GeometryHelper.EnsureControlInApplication(this._popup, RootPanel);
        }

        #endregion Private Methods

        #endregion Methods
    }
}