WhileDesigner.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WF / Activities / Designers / WhileDesigner.cs / 1305376 / WhileDesigner.cs
                        

                        
                            namespace System.Workflow.Activities 
{
 	using System;
	using System.Diagnostics;
	using System.Text; 
	using System.Reflection;
 	using System.Collections; 
	using System.CodeDom; 
 	using System.ComponentModel;
 	using System.ComponentModel.Design; 
	using System.Drawing;
 	using System.Drawing.Drawing2D;
    using System.Workflow.ComponentModel;
	using System.Workflow.ComponentModel.Design; 
	using System.Collections.ObjectModel;
    using System.Runtime.Serialization; 
 
	#region Class WhileDesigner
    [ActivityDesignerTheme(typeof(WhileDesignerTheme))] 
 	internal sealed class WhileDesigner: SequentialActivityDesigner
	{
 		#region Properties and Methods
 		protected override void Initialize(Activity activity) 
		{
 			base.Initialize(activity); 
 
			HelpText = DR.GetString(DR.DropActivityHere);
		} 

        protected override void OnPaint(ActivityDesignerPaintEventArgs e)
        {
			base.OnPaint(e); 

            if (Expanded) 
 			{ 
                CompositeDesignerTheme compositeDesignerTheme = e.DesignerTheme as CompositeDesignerTheme;
                Debug.Assert(compositeDesignerTheme != null); 
                if (compositeDesignerTheme == null)
                    return;

				Rectangle bounds = Bounds; 
 				Rectangle textRectangle = TextRectangle;
 				Rectangle imageRectangle = ImageRectangle; 
 
				Point connectionPoint = Point.Empty;
 				if (!imageRectangle.IsEmpty) 
					connectionPoint = new Point(imageRectangle.Right + e.AmbientTheme.Margin.Width / 2, imageRectangle.Top + imageRectangle.Height / 2);
				else if (!textRectangle.IsEmpty)
					connectionPoint = new Point(textRectangle.Right + e.AmbientTheme.Margin.Width / 2, textRectangle.Top + textRectangle.Height / 2);
 				else 
					connectionPoint = new Point(bounds.Left + bounds.Width / 2 + e.AmbientTheme.Margin.Width / 2, bounds.Top + e.AmbientTheme.Margin.Height / 2);
 
 				Point[] points = new Point[4]; 
 				points[0].X = bounds.Left + bounds.Width / 2;
                points[0].Y = bounds.Bottom - compositeDesignerTheme.ConnectorSize.Height / 3; 
                points[1].X = bounds.Right - compositeDesignerTheme.ConnectorSize.Width / 3;
                points[1].Y = bounds.Bottom - compositeDesignerTheme.ConnectorSize.Height / 3;
                points[2].X = bounds.Right - compositeDesignerTheme.ConnectorSize.Width / 3;
				points[2].Y = connectionPoint.Y; 
 				points[3].X = connectionPoint.X;
				points[3].Y = connectionPoint.Y; 
 
                DrawConnectors(e.Graphics, compositeDesignerTheme.ForegroundPen, points, LineAnchor.None, LineAnchor.ArrowAnchor);
                DrawConnectors(e.Graphics, compositeDesignerTheme.ForegroundPen, new Point[] { points[0], new Point(bounds.Left + bounds.Width / 2, bounds.Bottom) }, LineAnchor.None, LineAnchor.None); 
            }
		}

		protected override Rectangle[] GetConnectors() 
 		{
			Rectangle[] connectors = base.GetConnectors(); 
 
 			CompositeDesignerTheme designerTheme = DesignerTheme as CompositeDesignerTheme;
 			Debug.Assert(designerTheme != null); 
			if (Expanded && connectors.GetLength(0) > 0)
 				connectors[connectors.GetLength(0) - 1].Height = connectors[connectors.GetLength(0) - 1].Height - (((designerTheme != null) ? designerTheme.ConnectorSize.Height : 0) / 3);

			return connectors; 
		}
 
        protected override Size OnLayoutSize(ActivityDesignerLayoutEventArgs e) 
        {
            Size containerSize = base.OnLayoutSize(e); 

            CompositeDesignerTheme compositeDesignerTheme = e.DesignerTheme as CompositeDesignerTheme;
            if (compositeDesignerTheme != null && Expanded)
            { 
                containerSize.Width += 2 * compositeDesignerTheme.ConnectorSize.Width;
                containerSize.Height += compositeDesignerTheme.ConnectorSize.Height; 
			} 

            return containerSize; 
 		}

		public override bool CanInsertActivities(HitTestInfo insertLocation, ReadOnlyCollection activitiesToInsert)
 		{ 
 			//we only allow one activity to be inserted
            if (this == ActiveView.AssociatedDesigner && ContainedDesigners.Count > 0) 
				return false; 

 			return base.CanInsertActivities(insertLocation, activitiesToInsert); 
		}
		#endregion
	}
 	#endregion 

    #region WhileDesignerTheme 
    internal sealed class WhileDesignerTheme : CompositeDesignerTheme 
    {
        public WhileDesignerTheme(WorkflowTheme theme) 
            : base(theme)
        {
            this.ShowDropShadow = false;
            this.ConnectorStartCap = LineAnchor.None; 
            this.ConnectorEndCap = LineAnchor.ArrowAnchor;
            this.ForeColor = Color.FromArgb(0xFF, 0x52, 0x8A, 0xF7); 
            this.BorderColor = Color.FromArgb(0xFF, 0xE0, 0xE0, 0xE0); 
            this.BorderStyle = DashStyle.Dash;
            this.BackColorStart = Color.FromArgb(0x00, 0x00, 0x00, 0x00); 
            this.BackColorEnd = Color.FromArgb(0x00, 0x00, 0x00, 0x00);
        }
    }
    #endregion 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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