SequentialWorkflowHeaderFooter.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WF / Common / AuthoringOM / Design / SequentialWorkflowHeaderFooter.cs / 1305376 / SequentialWorkflowHeaderFooter.cs
                        
                        
                            #pragma warning disable 1634, 1691 
namespace System.Workflow.ComponentModel.Design
{
 	using System;
	using System.IO; 
	using System.Drawing;
	using System.CodeDom; 
 	using System.Diagnostics; 
	using System.Collections;
 	using System.Collections.Generic; 
 	using System.Windows.Forms;
	using System.ComponentModel;
 	using System.Globalization;
	using System.Drawing.Design; 
	using System.Drawing.Imaging;
	using System.Drawing.Drawing2D; 
 	using System.Windows.Forms.Design; 
	using System.ComponentModel.Design;
 	using System.Collections.Specialized; 
 	using System.ComponentModel.Design.Serialization;
	using System.Workflow.ComponentModel.Compiler;
    using System.Workflow.ComponentModel.Serialization;
 	using System.Collections.ObjectModel; 
	using System.Reflection;
    using System.Workflow.ComponentModel.Design; 
    using System.Runtime.Serialization.Formatters.Binary; 

    // 

    #region Class Header/Footer
    /// 
    /// Base class for Header and Footer to be associated with SequentialWorkflowRootDesigner 
    /// 
    public class SequentialWorkflowHeaderFooter 
    { 
        private SequentialWorkflowRootDesigner rootDesigner;
        private Image image; 
        private string text = String.Empty;
        private bool isHeader = true;
        internal Size textSize = Size.Empty;
 
        /// 
        /// Default constructor 
        ///  
        /// Parent designer associated with the Header or Footer
        /// True if it is a header, false if it is a footer 
        public SequentialWorkflowHeaderFooter(SequentialWorkflowRootDesigner parent, bool isHeader)
        {
            this.rootDesigner = parent;
            this.isHeader = isHeader; 
        }
 
        ///  
        /// Gets the image associated with Header/Footer
        ///  
        public virtual Image Image
        {
            get
            { 
                return this.image;
            } 
 
            set
            { 
                if (this.image == value)
                    return;

                this.image = value; 

                AssociatedDesigner.InternalPerformLayout(); 
            } 
        }
 
        /// 
        /// Gets the text associated with Header/Footer
        /// 
        public virtual string Text 
        {
            get 
            { 
                return this.text;
            } 

            set
            {
                if (this.text == value) 
                    return;
 
                this.text = value; 

                AssociatedDesigner.InternalPerformLayout(); 
            }
        }

        ///  
        /// Gets the bonding rectangle for Header/Footer
        ///  
        public virtual Rectangle Bounds 
        {
            get 
            {
                Rectangle bounds = Rectangle.Empty;

                Size margin = WorkflowTheme.CurrentTheme.AmbientTheme.Margin; 

                Rectangle textBounds = TextRectangle; 
                Rectangle imageBounds = ImageRectangle; 
                if (!textBounds.Size.IsEmpty || !imageBounds.Size.IsEmpty)
                { 
                    bounds.Width = Math.Max(imageBounds.Width, textBounds.Width) + 2 * margin.Width;
                    bounds.Height = margin.Height + imageBounds.Height;
                    bounds.Height += (imageBounds.Height > 0) ? margin.Height : 0;
                    bounds.Height += textBounds.Height; 
                    bounds.Height += (textBounds.Height > 0) ? margin.Height : 0;
 
                    //Before returning we adjust the bounds based on the header / footer setting 
                    Rectangle designerBounds = this.rootDesigner.Bounds;
                    bounds.X = designerBounds.Left + designerBounds.Width / 2 - bounds.Width / 2; 
                    bounds.Y = (this.isHeader) ? designerBounds.Top : designerBounds.Bottom - bounds.Height;
                }

                return bounds; 
            }
        } 
 
        /// 
        /// Gets the bounding rectangle for text associated with Header/Footer 
        /// 
        public virtual Rectangle TextRectangle
        {
            get 
            {
                Rectangle bounds = Rectangle.Empty; 
                if (!String.IsNullOrEmpty(Text)) 
                {
                    Size margin = WorkflowTheme.CurrentTheme.AmbientTheme.Margin; 
                    Rectangle designerBounds = this.rootDesigner.Bounds;
                    bounds.Size = this.textSize;
                    bounds.X = designerBounds.Left + designerBounds.Width / 2 - this.textSize.Width / 2;
                    bounds.Y = (this.isHeader) ? designerBounds.Top + margin.Height : designerBounds.Bottom - margin.Height - this.textSize.Height; 
                }
 
                return bounds; 
            }
        } 

        /// 
        /// Gets the bounding rectangle for Image associated with Header/Footer
        ///  
        public virtual Rectangle ImageRectangle
        { 
            get 
            {
                Rectangle bounds = Rectangle.Empty; 
                if (Image != null)
                {
                    ActivityDesignerTheme designerTheme = this.rootDesigner.DesignerTheme;
                    Size margin = WorkflowTheme.CurrentTheme.AmbientTheme.Margin; 
                    Rectangle designerBounds = this.rootDesigner.Bounds;
                    Rectangle textRectangle = TextRectangle; 
 
                    bounds.Size = designerTheme.ImageSize;
                    bounds.X = designerBounds.Left + designerBounds.Width / 2 - bounds.Width / 2; 
                    if (this.isHeader)
                    {
                        bounds.Y = designerBounds.Top + margin.Height;
                        bounds.Y += textRectangle.Height; 
                        bounds.Y += (textRectangle.Height > 0) ? margin.Height : 0;
                    } 
                    else 
                    {
                        bounds.Y = designerBounds.Bottom - margin.Height; 
                        bounds.Y -= textRectangle.Height;
                        bounds.Y -= (textRectangle.Height > 0) ? margin.Height : 0;
                        bounds.Y -= bounds.Height;
                    } 
                }
 
                return bounds; 
            }
        } 

        /// 
        /// Layouts the visual cues inside Header/Footer
        ///  
        /// ActivityDesignerLayoutEventArgs holding layouting arguments
        public virtual void OnLayout(ActivityDesignerLayoutEventArgs e) 
        { 
			if (e == null)
				throw new ArgumentNullException("e"); 

            if (!String.IsNullOrEmpty(Text) && e.DesignerTheme != null && e.DesignerTheme.Font != null)
            {
 					using (Font font = new Font(e.DesignerTheme.Font.FontFamily, e.DesignerTheme.Font.SizeInPoints + 1.0f, FontStyle.Bold)) 
						this.textSize = ActivityDesignerPaint.MeasureString(e.Graphics, font, Text, StringAlignment.Center, Size.Empty);
            } 
        } 

        ///  
        /// Draws the Header/Footer associated with workflow root designer.
        /// 
        /// ActivityDesignerPaintEventArgs holding drawing arguments
        public virtual void OnPaint(ActivityDesignerPaintEventArgs e) 
        {
            if (e == null) 
                throw new ArgumentNullException("e"); 

            if (!String.IsNullOrEmpty(Text) && !TextRectangle.Size.IsEmpty && e.DesignerTheme != null && e.DesignerTheme.Font != null) 
            {
                //use bold or regular font based on mouse over status
                using (Font font = new Font(e.DesignerTheme.Font.FontFamily, e.DesignerTheme.Font.SizeInPoints + 1.0f, (this.AssociatedDesigner.SmartTagVisible) ? FontStyle.Bold : FontStyle.Regular))
                    ActivityDesignerPaint.DrawText(e.Graphics, font, Text, TextRectangle, StringAlignment.Center, TextQuality.AntiAliased, e.DesignerTheme.ForegroundBrush); 
            }
 
            if (Image != null && !ImageRectangle.Size.IsEmpty) 
                ActivityDesignerPaint.DrawImage(e.Graphics, Image, ImageRectangle, DesignerContentAlignment.Fill);
        } 

        /// 
        /// Gets the designer associated with header/footer
        ///  
        protected SequentialWorkflowRootDesigner AssociatedDesigner
        { 
            get 
            {
                return this.rootDesigner; 
            }
        }
    }
    #endregion 

} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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SequentialWorkflowHeaderFooter.cs source code in C# .NET

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