Owner Drawn Menu Control : MenuItem : GUI Windows Form C# Source Code

    

/*
User Interfaces in C#: Windows Forms and Custom Controls
by Matthew MacDonald

Publisher: Apress
ISBN: 1590590457
*/
using System.Drawing;

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Drawing.Text;

namespace OwnerDrawnMenuControl
{
  /// <summary>
  /// Summary description for OwnerDrawnMenuControl.
  /// </summary>
  public class OwnerDrawnMenuControl : System.Windows.Forms.Form
  {
    internal System.Windows.Forms.MainMenu mainMenu1;
    internal System.Windows.Forms.MenuItem mnuFile;
    internal System.Windows.Forms.MenuItem mnuFonts;
    internal System.Windows.Forms.ImageList imgMenu;
    private System.ComponentModel.IContainer components;

    public OwnerDrawnMenuControl()
    {
      //
      // Required for Windows Form Designer support
      //
      InitializeComponent();

      //
      // TODO: Add any constructor code after InitializeComponent call
      //
    }

    /// <summary>
    /// Clean up any resources being used.
    /// </summary>
    protected override void Dispose( bool disposing )
    {
      if( disposing )
      {
        if (components != null) 
        {
          components.Dispose();
        }
      }
      base.Dispose( disposing );
    }

    #region Windows Form Designer generated code
    /// <summary>
    /// Required method for Designer support - do not modify
    /// the contents of this method with the code editor.
    /// </summary>
    private void InitializeComponent()
    {
      this.components = new System.ComponentModel.Container();
      System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(OwnerDrawnMenuControl));
      this.mainMenu1 = new System.Windows.Forms.MainMenu();
      this.mnuFile = new System.Windows.Forms.MenuItem();
      this.mnuFonts = new System.Windows.Forms.MenuItem();
      this.imgMenu = new System.Windows.Forms.ImageList(this.components);
      // 
      // mainMenu1
      // 
      this.mainMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
                                            this.mnuFile});
      // 
      // mnuFile
      // 
      this.mnuFile.Index = 0;
      this.mnuFile.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
                                          this.mnuFonts});
      this.mnuFile.Text = "File";
      // 
      // mnuFonts
      // 
      this.mnuFonts.Index = 0;
      this.mnuFonts.Text = "Fonts";
      // 
      // imgMenu
      // 
      this.imgMenu.ColorDepth = System.Windows.Forms.ColorDepth.Depth8Bit;
      this.imgMenu.ImageSize = new System.Drawing.Size(16, 16);
      this.imgMenu.ImageStream = ((System.Windows.Forms.ImageListStreamer)(resources.GetObject("imgMenu.ImageStream")));
      this.imgMenu.TransparentColor = System.Drawing.Color.Transparent;
      // 
      // OwnerDrawnMenuControl
      // 
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(292, 266);
      this.Menu = this.mainMenu1;
      this.Name = "OwnerDrawnMenuControl";
      this.Text = "MenuControlClient";
      this.Load += new System.EventHandler(this.OwnerDrawnMenuControl_Load);

    }
    #endregion

    /// <summary>
    /// The main entry point for the application.
    /// </summary>
    [STAThread]
    static void Main() 
    {
      Application.Run(new OwnerDrawnMenuControl());
    }

    private void OwnerDrawnMenuControl_Load(object sender, System.EventArgs e)
    {
      mnuFile.MenuItems.Add(new ImageMenuItem("New", imgMenu.Images[0]));
      mnuFile.MenuItems.Add(new ImageMenuItem("Open", imgMenu.Images[1]));
      mnuFile.MenuItems.Add(new ImageMenuItem("Save", imgMenu.Images[2]));
      
      InstalledFontCollection fonts = new InstalledFontCollection();
      
      foreach (FontFamily family in fonts.Families)
      {
        try
        {
          mnuFonts.MenuItems.Add(new ImageMenuItem(family.Name,
                           new Font(family, 10), null, Color.CornflowerBlue));
        }
        catch
        {
          // Catch invalid fonts/styles and ignore them.
        }
      }

    }
  }
    public class ImageMenuItem : MenuItem
    {
        private Font font;
        private Color foreColor;
        private Image image;
        
        public Font Font
        {
            get
            {
                return font;
            }
            set
            {
                font = value;
            }
        }
        
        public Image Image
        {
            get
            {
                return image;
            }
            set
            {
                image = value;
            }
        }

        public Color ForeColor
        {
            get
            {
                return foreColor;
            }
            set
            {
                foreColor = value;
            }
        }
        
        public ImageMenuItem(string text, Font font, Image image, Color foreColor) : base(text)
        {
            this.Font = font;
            this.Image = image;
            this.ForeColor = foreColor;
            this.OwnerDraw = true;
        }
    
        public ImageMenuItem(string text, Image image) : base(text)
        {
            // Choose a suitable default color and font.
            this.Font = new Font("Tahoma", 8);
            this.Image = image;
            this.ForeColor = SystemColors.MenuText;
            this.OwnerDraw = true;
        }
        
        protected override void OnMeasureItem(System.Windows.Forms.MeasureItemEventArgs e)
        {
            base.OnMeasureItem(e);
            
            // Measure size needed to display text.
            e.ItemHeight = (int)e.Graphics.MeasureString(this.Text, this.Font).Height + 5;
            e.ItemWidth = (int)e.Graphics.MeasureString(this.Text, this.Font).Width + 30;
        }
        
        protected override void OnDrawItem(System.Windows.Forms.DrawItemEventArgs e)
        {
            base.OnDrawItem(e);

            // Determine whether disabled text is needed.
            Color textColor;
            if (this.Enabled == false)
            {
                textColor = SystemColors.GrayText;
            }
            else
            {
                e.DrawBackground();
                if ((e.State & DrawItemState.Selected) == DrawItemState.Selected)
                {
                    textColor = SystemColors.HighlightText;
                }
                else
                {
                    textColor = this.ForeColor;
                }
            }
    

            // Draw the image.
            if (Image != null)
            {
                if (this.Enabled == false)
                {
                    ControlPaint.DrawImageDisabled(e.Graphics, Image,
                        e.Bounds.Left + 3, e.Bounds.Top + 2, SystemColors.Menu);
                }
                else
                {
                    e.Graphics.DrawImage(Image, e.Bounds.Left + 3, e.Bounds.Top + 2);
                }
            }
            
            // Draw the text with the supplied colors and in the set region.
            e.Graphics.DrawString(this.Text, this.Font, new SolidBrush(textColor),
                e.Bounds.Left + 25, e.Bounds.Top + 3);

        }
    }
         

  
}