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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace testexListBox
{
class exListBoxItem
{
private string _title;
private string _details;
private Image _itemImage;
private int _id;
public int Id
{
get { return _id; }
set { _id = value; }
}
public exListBoxItem(int id, string title, string details, Image image)
{
_id = id;
_title = title;
_details = details;
_itemImage = image;
}
public string Title
{
get { return _title; }
set { _title = value; }
}
public string Details
{
get { return _details; }
set { _details = value; }
}
public Image ItemImage
{
get { return _itemImage; }
set { _itemImage = value; }
}
public void drawItem(DrawItemEventArgs e, Padding margin,
Font titleFont, Font detailsFont, StringFormat aligment,
Size imageSize)
{
// if selected, mark the background differently
if ((e.State & DrawItemState.Selected) == DrawItemState.Selected)
{
e.Graphics.FillRectangle(Brushes.CornflowerBlue, e.Bounds);
}
else
{
e.Graphics.FillRectangle(Brushes.Beige, e.Bounds);
}
// draw some item separator
e.Graphics.DrawLine(Pens.DarkGray, e.Bounds.X, e.Bounds.Y, e.Bounds.X + e.Bounds.Width, e.Bounds.Y);
// draw item image
e.Graphics.DrawImage(this.ItemImage, e.Bounds.X + margin.Left, e.Bounds.Y + margin.Top, imageSize.Width, imageSize.Height);
// calculate bounds for title text drawing
Rectangle titleBounds = new Rectangle(e.Bounds.X + margin.Horizontal + imageSize.Width,
e.Bounds.Y + margin.Top,
e.Bounds.Width - margin.Right - imageSize.Width - margin.Horizontal,
(int)titleFont.GetHeight() + 2);
// calculate bounds for details text drawing
Rectangle detailBounds = new Rectangle(e.Bounds.X + margin.Horizontal + imageSize.Width,
e.Bounds.Y + (int)titleFont.GetHeight() + 2 + margin.Vertical + margin.Top,
e.Bounds.Width - margin.Right - imageSize.Width - margin.Horizontal,
e.Bounds.Height - margin.Bottom - (int)titleFont.GetHeight() - 2 - margin.Vertical - margin.Top);
// draw the text within the bounds
e.Graphics.DrawString(this.Title, titleFont, Brushes.Black, titleBounds, aligment);
e.Graphics.DrawString(this.Details, detailsFont, Brushes.DarkGray, detailBounds, aligment);
// put some focus rectangle
e.DrawFocusRectangle();
}
}
public partial class exListBox : ListBox
{
private Size _imageSize;
private StringFormat _fmt;
private Font _titleFont;
private Font _detailsFont;
public exListBox(Font titleFont, Font detailsFont, Size imageSize,
StringAlignment aligment, StringAlignment lineAligment)
{
_titleFont = titleFont;
_detailsFont = detailsFont;
_imageSize = imageSize;
this.ItemHeight = _imageSize.Height + this.Margin.Vertical;
_fmt = new StringFormat();
_fmt.Alignment = aligment;
_fmt.LineAlignment = lineAligment;
_titleFont = titleFont;
_detailsFont = detailsFont;
}
public exListBox()
{
InitializeComponent();
_imageSize = new Size(80,60);
this.ItemHeight = _imageSize.Height + this.Margin.Vertical;
_fmt = new StringFormat();
_fmt.Alignment = StringAlignment.Near;
_fmt.LineAlignment = StringAlignment.Near;
_titleFont = new Font(this.Font, FontStyle.Bold);
_detailsFont = new Font(this.Font, FontStyle.Regular);
}
protected override void OnDrawItem(DrawItemEventArgs e)
{
// prevent from error Visual Designer
if (this.Items.Count > 0)
{
exListBoxItem item = (exListBoxItem)this.Items[e.Index];
item.drawItem(e, this.Margin, _titleFont, _detailsFont, _fmt, this._imageSize);
}
}
protected override void OnPaint(PaintEventArgs pe)
{
base.OnPaint(pe);
}
}
}
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