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Implementing WS-SecureConversation in Microsoft IssueVision

, 27 Sep 2005
Adding secure communications to the Microsoft IssueVision sample application using WSE 2.0.
issuevisionwsesmartclient.zip
Database
IssueVision
Controls
Outlook
Images
statusbar
toolbar
types
Libraries
ThreadHelper Documentation
Panes
Patterns
Web References
localhost
IssueVisionWebWseCS
Libraries
App.ico
IssueVision.csproj.user
IssueVision.snk
IssueVisionServices.disco
IssueVisionServices.wsdl
Reference.map
AppUpdater.dll
ThreadHelper.dll
About BackgroundWorker.doc
Async Windows Forms Programming with BackgroundWorker.doc
IssueVision-about-banner.png
mosaic-light.png
Signin.png
all_staffers.png
all_types.png
computer.png
environmental.png
help_desk.png
network.png
none.png
printer.png
staff.png
technicians.png
technicians_group.png
telecom.png
new_task.png
synchronize.png
work_offline.png
StatusConnected.ico
StatusDisconnected.ico
StatusSynchronizing.ico
IssueVisionWebWseCS.csproj.webinfo
IVDataSet.xsx
using System;
using System.ComponentModel;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Text;
using System.Windows.Forms;

namespace IssueVision
{
	// Custom control that draws the caption for each pane. Contains an active 
	// state and draws the caption different for each state. Caption is drawn
	// with a gradient fill and antialias font.
	public class PaneCaption : UserControl
	{
		private class Consts
		{
			public const int DefaultHeight = 26;
			public const string DefaultFontName = "Tahoma";
			public const int DefaultFontSize = 12;
			public const int PosOffset = 4;
		}

		private bool m_active = false;
		private bool m_antiAlias = false;
		private bool m_allowActive = false;
		private string m_text = string.Empty;
		
		private Color m_colorActiveText = Color.Black;
		private Color m_colorInactiveText = Color.White;
		
		private Color m_colorActiveLow = Color.FromArgb(255, 165, 78);
		private Color m_colorActiveHigh = Color.FromArgb(255, 225, 155);
		private Color m_colorInactiveLow = Color.FromArgb(3, 55, 145);
		private Color m_colorInactiveHigh = Color.FromArgb(90, 135, 215);
		
		private SolidBrush m_brushActiveText;
		private SolidBrush m_brushInactiveText;
		private LinearGradientBrush m_brushActive;
		private LinearGradientBrush m_brushInactive;
		private StringFormat m_format = new StringFormat();
		
		private IContainer components = null;

		[CategoryAttribute("Appearance")]
		[DescriptionAttribute("If should draw the text as antialiased.")]
		[DefaultValueAttribute(true)]
		public bool AntiAlias
		{
			get
			{
				return m_antiAlias;
			}

			set
			{
				m_antiAlias = value;
				Invalidate();
			}
		}

		[DefaultValueAttribute(typeof(Color), "Black")]
		[DescriptionAttribute("Color of the text when active.")]
		[CategoryAttribute("Appearance")]
		public Color ActiveTextColor
		{
			get
			{
				return m_colorActiveText;
			}

			set
			{
				if (value == Color.Empty)
				{
					value = Color.Black;
				}
				m_colorActiveText = value;
				m_brushActiveText = new SolidBrush(m_colorActiveText);
				Invalidate();
			}
		}

		[CategoryAttribute("Appearance")]
		[DefaultValueAttribute(typeof(Color), "White")]
		[DescriptionAttribute("Color of the text when inactive.")]
		public Color InactiveTextColor
		{
			get
			{
				return m_colorInactiveText;
			}

			set
			{
				if (value == Color.Empty)
				{
					value = Color.White;
				}
				m_colorInactiveText = value;
				m_brushInactiveText = new SolidBrush(m_colorInactiveText);
				Invalidate();
			}
		}

		[DescriptionAttribute("Low color of the active gradient.")]
		[CategoryAttribute("Appearance")]
		[DefaultValueAttribute(typeof(Color), "255, 165, 78")]
		public Color ActiveGradientLowColor
		{
			get
			{
				return m_colorActiveLow;
			}

			set
			{
				if (value == Color.Empty)
				{
					value = Color.FromArgb(255, 165, 78);
				}
				m_colorActiveLow = value;
				CreateGradientBrushes();
				Invalidate();
			}
		}

		[CategoryAttribute("Appearance")]
		[DescriptionAttribute("High color of the active gradient.")]
		[DefaultValueAttribute(typeof(Color), "255, 225, 155")]
		public Color ActiveGradientHighColor
		{
			get
			{
				return m_colorActiveHigh;
			}

			set
			{
				if (value == Color.Empty)
				{
					value = Color.FromArgb(255, 225, 155);
				}
				m_colorActiveHigh = value;
				CreateGradientBrushes();
				Invalidate();
			}
		}

		[DefaultValueAttribute(typeof(Color), "3, 55, 145")]
		[DescriptionAttribute("Low color of the inactive gradient.")]
		[CategoryAttribute("Appearance")]
		public Color InactiveGradientLowColor
		{
			get
			{
				return m_colorInactiveLow;
			}

			set
			{
				if (value == Color.Empty)
				{
					value = Color.FromArgb(3, 55, 145);
				}
				m_colorInactiveLow = value;
				CreateGradientBrushes();
				Invalidate();
			}
		}

		[CategoryAttribute("Appearance")]
		[DescriptionAttribute("High color of the inactive gradient.")]
		[DefaultValueAttribute(typeof(Color), "90, 135, 215")]
		public Color InactiveGradientHighColor
		{
			get
			{
				return m_colorInactiveHigh;
			}

			set
			{
				if (value == Color.Empty)
				{
					value = Color.FromArgb(90, 135, 215);
				}
				m_colorInactiveHigh = value;
				CreateGradientBrushes();
				Invalidate();
			}
		}

		// brush used to draw the caption
		private SolidBrush TextBrush
		{
			get
			{
				if (m_active && m_allowActive)
					return m_brushActiveText;
				else
					return m_brushInactiveText;
			}
		}

		// gradient brush for the background
		private LinearGradientBrush BackBrush
		{
			get
			{
				if (m_active && m_allowActive)
					return m_brushActive;
				else
					return m_brushInactive;
			}
		}

		public override string Text
		{
			get
			{
				return Caption;
			}

			set
			{
				Caption = value;
			}
		}

		[DescriptionAttribute("Text displayed in the caption.")]
		[DefaultValueAttribute("")]
		[CategoryAttribute("Appearance")]
		public string Caption
		{
			get
			{
				return m_text;
			}

			set
			{
				m_text = value;
				Invalidate();
			}
		}

		[DescriptionAttribute("The active state of the caption, draws the caption with different gradient colors.")]
		[DefaultValueAttribute(false)]
		[CategoryAttribute("Appearance")]
		public bool Active
		{
			get
			{
				return m_active;
			}

			set
			{
				m_active = value;
				Invalidate();
			}
		}

		[DefaultValueAttribute(true)]
		[CategoryAttribute("Appearance")]
		[DescriptionAttribute("True always uses the inactive state colors, false maintains an active and inactive state.")]
		public bool AllowActive
		{
			get
			{
				return m_allowActive;
			}

			set
			{
				m_allowActive = value;
				Invalidate();
			}
		}

		public PaneCaption()
		{
			InitializeComponent();
			
			// set double buffer styles
			SetStyle(ControlStyles.UserPaint | ControlStyles.ResizeRedraw | ControlStyles.AllPaintingInWmPaint | ControlStyles.DoubleBuffer, true);
			
			// init the height
			Height = Consts.DefaultHeight;
			
			// format used when drawing the text
			m_format.FormatFlags = StringFormatFlags.NoWrap;
			m_format.LineAlignment = StringAlignment.Center;
			m_format.Trimming = StringTrimming.EllipsisCharacter;
			
			// init the font
			Font = new Font("Tahoma", 12.0F, FontStyle.Bold);
			
			// create gdi objects
			ActiveTextColor = m_colorActiveText;
			InactiveTextColor = m_colorInactiveText;
			
			// setting the height above actually does this, but leave
			// in incase change the code (and forget to init the 
			// gradient brushes)
			CreateGradientBrushes();
		}

		// the caption needs to be drawn
		protected override void OnPaint(PaintEventArgs e)
		{
			DrawCaption(e.Graphics);
			base.OnPaint(e);
		}

		// draw the caption
		private void DrawCaption(Graphics g)
		{
			// background
			g.FillRectangle(this.BackBrush, this.DisplayRectangle);
			
			if (m_antiAlias)
				g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
			
			// need a rectangle when want to use ellipsis
			RectangleF bounds  = new RectangleF(Consts.PosOffset, 
												0,
												this.DisplayRectangle.Width - Consts.PosOffset, 
												this.DisplayRectangle.Height);

			g.DrawString(m_text, this.Font, this.TextBrush, bounds, m_format);
		}

		// clicking on the caption does not give focus,
		// handle the mouse down event and set focus to self
		protected override void OnMouseDown(MouseEventArgs e)
		{
			base.OnMouseDown(e);
			if (m_allowActive)
			{
				Focus();
			}
		}

		protected override void OnSizeChanged(EventArgs e)
		{
			base.OnSizeChanged(e);
			// create the gradient brushes based on the new size
			CreateGradientBrushes();
		}

		private void CreateGradientBrushes()
		{
			// can only create brushes when have a width and height
			if (Width > 0 && Height > 0)
			{
				if (m_brushActive != null)
				{
					m_brushActive.Dispose();
				}
				
				m_brushActive = new LinearGradientBrush(DisplayRectangle, m_colorActiveHigh, m_colorActiveLow, LinearGradientMode.Vertical);
				
				if (m_brushInactive != null)
				{
					m_brushInactive.Dispose();
				}
				
				m_brushInactive = new LinearGradientBrush(DisplayRectangle, m_colorInactiveHigh, m_colorInactiveLow, LinearGradientMode.Vertical);
			}
		}

		protected override void Dispose(bool disposing)
		{
			if (disposing && components != null)
			{
				components.Dispose();
			}
			base.Dispose(disposing);
		}

		[DebuggerStepThroughAttribute()]
		private void InitializeComponent()
		{
			this.Name = "PaneCaption";
			this.Size = new Size(150, 30);
		}
	}
}

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About the Author

Weidong Shen
Software Developer (Senior)
United States United States
Weidong has been an information system professional since 1990. He has a Master's degree in Computer Science, and is currently a MCSD .NET

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Article Copyright 2005 by Weidong Shen
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