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2008-01-23

自定义控件OutLookBar

时间: 2008-01-23 22:47:51 作者: admin 阅读次数: 1471
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仿微软OutLookBar的控件

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

namespace ctListBar
{
    public partial class OutLookBar : Panel
    {
        public OutLookBar()
        {
            buttonHeight = 25;
            selectedBand = 0;
            selectedBandHeight = 0;
            InitializeComponent();
        }
        private int buttonHeight;
  private int selectedBand;
  private int selectedBandHeight;

  public int ButtonHeight
  {
   get
   {
    return buttonHeight;
   }

   set
   {
    buttonHeight=value;
    // do recalc layout for entire bar
   }
  }

  public int SelectedBand
  {
   get
   {
    return selectedBand;
   }
   set
   {
    SelectBand(value);
   }
  }

  public void Initialize()
  {
   // parent must exist!
   Parent.SizeChanged+=new EventHandler(SizeChangedEvent);
  }

  public void AddBand(string caption, ContentPanel content)
  {
   content.outlookBar=this;
   int index=Controls.Count;
   BandTagInfo bti=new BandTagInfo(this, index);
   BandPanel bandPanel=new BandPanel(caption, content, bti);
   Controls.Add(bandPanel);
   UpdateBarInfo();
   RecalcLayout(bandPanel, index);
  }

  public void SelectBand(int index)
  {
   selectedBand=index;
   RedrawBands();
  }

  private void RedrawBands()
  {
   for (int i=0; i<Controls.Count; i++)
   {
    BandPanel bp=Controls[i] as BandPanel;
    RecalcLayout(bp, i);
   }
  }

  private void UpdateBarInfo()
  {
   selectedBandHeight=ClientRectangle.Height-(Controls.Count * buttonHeight);
  }

  private void RecalcLayout(BandPanel bandPanel, int index)
  {
   int vPos=(index <= selectedBand) ? buttonHeight*index : buttonHeight*index+selectedBandHeight;
   int height=selectedBand==index ? selectedBandHeight+buttonHeight : buttonHeight;

   // the band dimensions
   bandPanel.Location=new Point(0, vPos);
   bandPanel.Size=new Size(ClientRectangle.Width, height);

   // the contained button dimensions
   bandPanel.Controls[0].Location=new Point(0, 0);
   bandPanel.Controls[0].Size=new Size(ClientRectangle.Width, buttonHeight);

   // the contained content panel dimensions
   bandPanel.Controls[1].Location=new Point(0, buttonHeight);
   bandPanel.Controls[1].Size=new Size(ClientRectangle.Width-2, height-8);
  }

  private void SizeChangedEvent(object sender, EventArgs e)
  {
   Size=new Size(Size.Width, ((Control)sender).ClientRectangle.Size.Height);
   UpdateBarInfo();
   RedrawBands();
  }
        protected override void OnPaint(PaintEventArgs pe)
        {
            // TODO: 在此处添加自定义绘制代码

            // 调用基类 OnPaint
            base.OnPaint(pe);
        }
    }

    internal class BandTagInfo
    {
        public OutLookBar outlookBar;
        public int index;

        public BandTagInfo(OutLookBar ob, int index)
        {
            outlookBar = ob;
            this.index = index;
        }
    }

    internal class BandPanel : Panel
    {
        public BandPanel(string caption, ContentPanel content, BandTagInfo bti)
        {
            BandButton bandButton = new BandButton(caption, bti);
            Controls.Add(bandButton);
            Controls.Add(content);
        }
    }

    internal class BandButton : Button
    {
        private BandTagInfo bti;

        public BandButton(string caption, BandTagInfo bti)
        {
            Text = caption;
            FlatStyle = FlatStyle.System;
            Visible = true;
            this.bti = bti;
            Click += new EventHandler(SelectBand);
        }

        private void SelectBand(object sender, EventArgs e)
        {
            bti.outlookBar.SelectBand(bti.index);
        }
    }

    public abstract class ContentPanel : Panel
    {
        public OutLookBar outlookBar;

        public ContentPanel()
        {
            // initial state
            Visible = true;
        }
    }

    public class IconPanel : ContentPanel
    {
        protected int iconSpacing;
        protected int margin;

        public int IconSpacing
        {
            get
            {
                return iconSpacing;
            }
        }

        public int Margin
        {
            get
            {
                return margin;
            }
        }

        public IconPanel()
        {
            margin = 10;
            iconSpacing = 32 + 15 + 10; // icon height + text height + margin
            BackColor = Color.LightBlue;
            AutoScroll = true;
        }

        public void AddIcon(string caption, Image image, EventHandler onClickEvent)
        {
            int index = Controls.Count / 2; // two entries per icon
            PanelIcon panelIcon = new PanelIcon(this, image, index, onClickEvent);
            Controls.Add(panelIcon);

            Label label = new Label();
            label.Text = caption;
            label.Visible = true;
            label.Location = new Point(0, margin + image.Size.Height + index * iconSpacing);
            label.Size = new Size(Size.Width, 15);
            label.TextAlign = ContentAlignment.TopCenter;
            label.Click += onClickEvent;
            label.Tag = panelIcon;
            Controls.Add(label);
        }
    }

    public class PanelIcon : PictureBox
    {
        public int index;
        public IconPanel iconPanel;

        private Color bckgColor;
        private bool mouseEnter;

        public int Index
        {
            get
            {
                return index;
            }
        }

        public PanelIcon(IconPanel parent, Image image, int index, EventHandler onClickEvent)
        {
            this.index = index;
            this.iconPanel = parent;
            Image = image;
            Visible = true;
            Location = new Point(iconPanel.outlookBar.Size.Width / 2 - image.Size.Width / 2,
                            iconPanel.Margin + index * iconPanel.IconSpacing);
            Size = image.Size;
            Click += onClickEvent;
            Tag = this;

            MouseEnter += new EventHandler(OnMouseEnter);
            MouseLeave += new EventHandler(OnMouseLeave);
            MouseMove += new MouseEventHandler(OnMouseMove);

            bckgColor = iconPanel.BackColor;
            mouseEnter = false;
        }

        private void OnMouseMove(object sender, MouseEventArgs args)
        {
            if ((args.X < Size.Width - 2) &&
                (args.Y < Size.Width - 2) &&
                (!mouseEnter))
            {
                BackColor = Color.LightCyan;
                BorderStyle = BorderStyle.FixedSingle;
                Location = Location - new Size(1, 1);
                mouseEnter = true;
            }
        }

        private void OnMouseEnter(object sender, EventArgs e)
        {
        }

        private void OnMouseLeave(object sender, EventArgs e)
        {
            if (mouseEnter)
            {
                BackColor = bckgColor;
                BorderStyle = BorderStyle.None;
                Location = Location + new Size(1, 1);
                mouseEnter = false;
            }
        }
    }
}
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Tags: C# OutLookBar