moel@345: using System;
moel@345: using System.Collections.Generic;
moel@345: using System.Text;
moel@345: using System.ComponentModel;
moel@345: using System.Windows.Forms;
moel@345: using System.Drawing;
moel@345: using System.Windows.Forms.VisualStyles;
moel@345: using System.Drawing.Imaging;
moel@345: 
moel@345: namespace Aga.Controls.Tree
moel@345: {
moel@345: 	[TypeConverter(typeof(TreeColumn.TreeColumnConverter)), DesignTimeVisible(false), ToolboxItem(false)]
moel@345: 	public class TreeColumn : Component
moel@345: 	{
moel@345: 		private class TreeColumnConverter : ComponentConverter
moel@345: 		{
moel@345: 			public TreeColumnConverter()
moel@345: 				: base(typeof(TreeColumn))
moel@345: 			{
moel@345: 			}
moel@345: 
moel@345: 			public override bool GetPropertiesSupported(ITypeDescriptorContext context)
moel@345: 			{
moel@345: 				return false;
moel@345: 			}
moel@345: 		}
moel@345: 
moel@345: 		private const int HeaderLeftMargin = 5;
moel@345:         private const int HeaderRightMargin = 5;   
moel@345: 		private const int SortOrderMarkMargin = 8;
moel@345: 
moel@345:         private TextFormatFlags _headerFlags;
moel@345:         private TextFormatFlags _baseHeaderFlags = TextFormatFlags.NoPadding | 
moel@345:                                                    TextFormatFlags.EndEllipsis |
moel@345:                                                    TextFormatFlags.VerticalCenter |
moel@345: 												TextFormatFlags.PreserveGraphicsTranslateTransform;
moel@345: 
moel@345: 		#region Properties
moel@345: 
moel@345:         private TreeColumnCollection _owner;
moel@345: 		internal TreeColumnCollection Owner
moel@345: 		{
moel@345: 			get { return _owner; }
moel@345: 			set { _owner = value; }
moel@345: 		}
moel@345: 
moel@345: 		[Browsable(false)]
moel@345: 		public int Index
moel@345: 		{
moel@345: 			get 
moel@345: 			{
moel@345: 				if (Owner != null)
moel@345: 					return Owner.IndexOf(this);
moel@345: 				else
moel@345: 					return -1;
moel@345: 			}
moel@345: 		}
moel@345: 
moel@345: 		private string _header;
moel@345: 		[Localizable(true)]
moel@345: 		public string Header
moel@345: 		{
moel@345: 			get { return _header; }
moel@345: 			set 
moel@345: 			{ 
moel@345: 				_header = value;
moel@345: 				OnHeaderChanged();
moel@345: 			}
moel@345: 		}
moel@345: 
moel@345: 		private string _tooltipText;
moel@345: 		[Localizable(true)]
moel@345: 		public string TooltipText
moel@345: 		{
moel@345: 			get { return _tooltipText; }
moel@345: 			set { _tooltipText = value; }
moel@345: 		}
moel@345: 
moel@345: 		private int _width;
moel@345: 		[DefaultValue(50), Localizable(true)]
moel@345: 		public int Width
moel@345: 		{
moel@345: 			get
moel@345:             {
moel@345:                 return _width;
moel@345:             }
moel@345: 			set 
moel@345: 			{
moel@345: 				if (_width != value)
moel@345: 				{
moel@345:                     _width = Math.Max(MinColumnWidth, value);
moel@345:                     if (_maxColumnWidth > 0)
moel@345:                     {
moel@345:                         _width = Math.Min(_width, MaxColumnWidth);
moel@345:                     }
moel@345: 					OnWidthChanged();
moel@345: 				}
moel@345: 			}
moel@345: 		}
moel@345: 
moel@345:         private int _minColumnWidth;
moel@345:         [DefaultValue(0)]
moel@345:         public int MinColumnWidth
moel@345:         {
moel@345:             get { return _minColumnWidth; }
moel@345:             set
moel@345:             {
moel@345: 				if (value < 0)
moel@345: 					throw new ArgumentOutOfRangeException("value");
moel@345: 
moel@345: 				_minColumnWidth = value;
moel@345:                 Width = Math.Max(value, Width);
moel@345:             }
moel@345:         }
moel@345: 
moel@345:         private int _maxColumnWidth;
moel@345:         [DefaultValue(0)]
moel@345:         public int MaxColumnWidth
moel@345:         {
moel@345:             get { return _maxColumnWidth; }
moel@345:             set
moel@345:             {
moel@345: 				if (value < 0)
moel@345: 					throw new ArgumentOutOfRangeException("value");
moel@345: 
moel@345: 				_maxColumnWidth = value;
moel@345: 				if (value > 0)
moel@345: 					Width = Math.Min(value, _width);
moel@345:             }
moel@345:         }
moel@345: 
moel@345: 		private bool _visible = true;
moel@345: 		[DefaultValue(true)]
moel@345: 		public bool IsVisible
moel@345: 		{
moel@345: 			get { return _visible; }
moel@345: 			set 
moel@345: 			{ 
moel@345: 				_visible = value;
moel@345: 				OnIsVisibleChanged();
moel@345: 			}
moel@345: 		}
moel@345: 
moel@345: 		private HorizontalAlignment _textAlign = HorizontalAlignment.Left;
moel@345: 		[DefaultValue(HorizontalAlignment.Left)]
moel@345: 		public HorizontalAlignment TextAlign
moel@345: 		{
moel@345: 			get { return _textAlign; }
moel@345: 			set 
moel@345: 			{
moel@345: 				if (value != _textAlign)
moel@345: 				{
moel@345: 					_textAlign = value;
moel@345:                     _headerFlags = _baseHeaderFlags | TextHelper.TranslateAligmentToFlag(value);
moel@345: 					OnHeaderChanged();
moel@345: 				}
moel@345: 			}
moel@345: 		}
moel@345: 
moel@345:         private bool _sortable = false;
moel@345:         [DefaultValue(false)]
moel@345:         public bool Sortable
moel@345:         {
moel@345:             get { return _sortable; }
moel@345:             set { _sortable = value; }
moel@345:         }
moel@345: 
moel@345: 		private SortOrder _sort_order = SortOrder.None;
moel@345: 		public SortOrder SortOrder
moel@345: 		{
moel@345: 			get { return _sort_order; }
moel@345: 			set
moel@345: 			{
moel@345: 				if (value == _sort_order)
moel@345: 					return;
moel@345: 				_sort_order = value;
moel@345: 				OnSortOrderChanged();
moel@345: 			}
moel@345: 		}
moel@345: 
moel@345: 		public Size SortMarkSize
moel@345: 		{
moel@345: 			get
moel@345: 			{
moel@345: 				if (Application.RenderWithVisualStyles)
moel@345: 					return new Size(9, 5);
moel@345: 				else
moel@345: 					return new Size(7, 4);
moel@345: 			}
moel@345: 		}
moel@345: 		#endregion
moel@345: 
moel@345: 		public TreeColumn(): 
moel@345: 			this(string.Empty, 50)
moel@345: 		{
moel@345: 		}
moel@345: 
moel@345:         public TreeColumn(string header, int width)
moel@345: 		{
moel@345: 			_header = header;
moel@345: 			_width = width;
moel@345:             _headerFlags = _baseHeaderFlags | TextFormatFlags.Left;
moel@345: 		}
moel@345: 
moel@345: 		public override string ToString()
moel@345: 		{
moel@345: 			if (string.IsNullOrEmpty(Header))
moel@345: 				return GetType().Name;
moel@345: 			else
moel@345: 				return Header;
moel@345: 		}
moel@345: 
moel@345: 		protected override void Dispose(bool disposing)
moel@345: 		{
moel@345: 			base.Dispose(disposing);
moel@345: 		}
moel@345: 
moel@345: 		#region Draw
moel@345: 
moel@345: 		private static VisualStyleRenderer _normalRenderer;
moel@345: 		private static VisualStyleRenderer _pressedRenderer;
moel@345: 		private static VisualStyleRenderer _hotRenderer;
moel@345: 
moel@345: 		private static void CreateRenderers()
moel@345: 		{
moel@345: 			if (Application.RenderWithVisualStyles && _normalRenderer == null)
moel@345: 			{
moel@345: 				_normalRenderer = new VisualStyleRenderer(VisualStyleElement.Header.Item.Normal);
moel@345: 				_pressedRenderer = new VisualStyleRenderer(VisualStyleElement.Header.Item.Pressed);
moel@345: 				_hotRenderer = new VisualStyleRenderer(VisualStyleElement.Header.Item.Hot);
moel@345: 			}
moel@345: 		}
moel@345: 
moel@345: 		internal Bitmap CreateGhostImage(Rectangle bounds, Font font)
moel@345: 		{
moel@345: 			Bitmap b = new Bitmap(bounds.Width, bounds.Height, PixelFormat.Format32bppArgb);
moel@345: 			Graphics gr = Graphics.FromImage(b);
moel@345: 			gr.FillRectangle(SystemBrushes.ControlDark, bounds);
moel@345: 			DrawContent(gr, bounds, font);
moel@345: 			BitmapHelper.SetAlphaChanelValue(b, 150);
moel@345: 			return b;
moel@345: 		}
moel@345: 
moel@345: 		internal void Draw(Graphics gr, Rectangle bounds, Font font, bool pressed, bool hot)
moel@345: 		{
moel@345: 			DrawBackground(gr, bounds, pressed, hot);
moel@345: 			DrawContent(gr, bounds, font);
moel@345: 		}
moel@345: 
moel@345:         private void DrawContent(Graphics gr, Rectangle bounds, Font font)
moel@345:         {
moel@345:             Rectangle innerBounds = new Rectangle(bounds.X + HeaderLeftMargin, bounds.Y,
moel@345:                                    bounds.Width - HeaderLeftMargin - HeaderRightMargin,
moel@345:                                    bounds.Height);
moel@345: 
moel@345:             if (SortOrder != SortOrder.None)
moel@345: 				innerBounds.Width -= (SortMarkSize.Width + SortOrderMarkMargin);
moel@345: 
moel@345:             Size maxTextSize = TextRenderer.MeasureText(gr, Header, font, innerBounds.Size, TextFormatFlags.NoPadding);
moel@345: 			Size textSize = TextRenderer.MeasureText(gr, Header, font, innerBounds.Size, _baseHeaderFlags);
moel@345: 
moel@345:             if (SortOrder != SortOrder.None)
moel@345:             {
moel@345: 				int tw = Math.Min(textSize.Width, innerBounds.Size.Width);
moel@345: 
moel@345:                 int x = 0;
moel@345:                 if (TextAlign == HorizontalAlignment.Left)
moel@345: 					x = innerBounds.X + tw + SortOrderMarkMargin;
moel@345:                 else if (TextAlign == HorizontalAlignment.Right)
moel@345: 					x = innerBounds.Right + SortOrderMarkMargin;
moel@345:                 else
moel@345: 					x = innerBounds.X + tw + (innerBounds.Width - tw) / 2 + SortOrderMarkMargin;
moel@345:                 DrawSortMark(gr, bounds, x);
moel@345: 			}
moel@345: 
moel@345: 			if (textSize.Width < maxTextSize.Width)
moel@345: 				TextRenderer.DrawText(gr, Header, font, innerBounds, SystemColors.ControlText, _baseHeaderFlags | TextFormatFlags.Left);
moel@345:             else
moel@345: 				TextRenderer.DrawText(gr, Header, font, innerBounds, SystemColors.ControlText, _headerFlags);
moel@345:         }
moel@345: 
moel@345: 		private void DrawSortMark(Graphics gr, Rectangle bounds, int x)
moel@345: 		{
moel@345: 			int y = bounds.Y + bounds.Height / 2 - 2;
moel@345: 			x = Math.Max(x, bounds.X + SortOrderMarkMargin);
moel@345: 
moel@345:             int w2 = SortMarkSize.Width / 2;
moel@345:             if (SortOrder == SortOrder.Ascending)
moel@345:             {
moel@345:                 Point[] points = new Point[] { new Point(x, y), new Point(x + SortMarkSize.Width, y), new Point(x + w2, y + SortMarkSize.Height) };
moel@345:                 gr.FillPolygon(SystemBrushes.ControlDark, points);
moel@345:             }
moel@345:             else if (SortOrder == SortOrder.Descending)
moel@345:             {
moel@345:                 Point[] points = new Point[] { new Point(x - 1, y + SortMarkSize.Height), new Point(x + SortMarkSize.Width, y + SortMarkSize.Height), new Point(x + w2, y - 1) };
moel@345:                 gr.FillPolygon(SystemBrushes.ControlDark, points);
moel@345:             }
moel@345: 		}
moel@345: 
moel@345: 		internal static void DrawDropMark(Graphics gr, Rectangle rect)
moel@345: 		{
moel@345: 			gr.FillRectangle(SystemBrushes.HotTrack, rect.X-1, rect.Y, 2, rect.Height);
moel@345: 		}
moel@345: 
moel@345: 		internal static void DrawBackground(Graphics gr, Rectangle bounds, bool pressed, bool hot)
moel@345: 		{
moel@345: 			if (Application.RenderWithVisualStyles)
moel@345: 			{
moel@345: 				CreateRenderers();
moel@345: 				if (pressed)
moel@345: 					_pressedRenderer.DrawBackground(gr, bounds);
moel@345: 				else if (hot)
moel@345: 					_hotRenderer.DrawBackground(gr, bounds);
moel@345: 				else
moel@345: 					_normalRenderer.DrawBackground(gr, bounds);
moel@345: 			}
moel@345: 			else
moel@345: 			{
moel@345: 				gr.FillRectangle(SystemBrushes.Control, bounds);
moel@345: 				Pen p1 = SystemPens.ControlLightLight;
moel@345: 				Pen p2 = SystemPens.ControlDark;
moel@345: 				Pen p3 = SystemPens.ControlDarkDark;
moel@345: 				if (pressed)
moel@345: 					gr.DrawRectangle(p2, bounds.X, bounds.Y, bounds.Width, bounds.Height);
moel@345: 				else
moel@345: 				{
moel@345: 					gr.DrawLine(p1, bounds.X, bounds.Y, bounds.Right, bounds.Y);
moel@345: 					gr.DrawLine(p3, bounds.X, bounds.Bottom, bounds.Right, bounds.Bottom);
moel@345: 					gr.DrawLine(p3, bounds.Right - 1, bounds.Y, bounds.Right - 1, bounds.Bottom - 1);
moel@345: 					gr.DrawLine(p1, bounds.Left, bounds.Y + 1, bounds.Left, bounds.Bottom - 2);
moel@345: 					gr.DrawLine(p2, bounds.Right - 2, bounds.Y + 1, bounds.Right - 2, bounds.Bottom - 2);
moel@345: 					gr.DrawLine(p2, bounds.X, bounds.Bottom - 1, bounds.Right - 2, bounds.Bottom - 1);
moel@345: 				}
moel@345: 			}
moel@345: 		}
moel@345: 
moel@345: 		#endregion
moel@345: 
moel@345: 		#region Events
moel@345: 
moel@345: 		public event EventHandler HeaderChanged;
moel@345: 		private void OnHeaderChanged()
moel@345: 		{
moel@345: 			if (HeaderChanged != null)
moel@345: 				HeaderChanged(this, EventArgs.Empty);
moel@345: 		}
moel@345: 
moel@345: 		public event EventHandler SortOrderChanged;
moel@345: 		private void OnSortOrderChanged()
moel@345: 		{
moel@345: 			if (SortOrderChanged != null)
moel@345: 				SortOrderChanged(this, EventArgs.Empty);
moel@345: 		}
moel@345: 
moel@345: 		public event EventHandler IsVisibleChanged;
moel@345: 		private void OnIsVisibleChanged()
moel@345: 		{
moel@345: 			if (IsVisibleChanged != null)
moel@345: 				IsVisibleChanged(this, EventArgs.Empty);
moel@345: 		}
moel@345: 
moel@345: 		public event EventHandler WidthChanged;
moel@345: 		private void OnWidthChanged()
moel@345: 		{
moel@345: 			if (WidthChanged != null)
moel@345: 				WidthChanged(this, EventArgs.Empty);
moel@345: 		}
moel@345: 
moel@345: 		#endregion
moel@345: 	}
moel@345: }