mcs/class/Managed.Windows.Forms/System.Windows.Forms/DataGridViewColumnHeaderCell.cs

   1 // Permission is hereby granted, free of charge, to any person obtaining
   2 // a copy of this software and associated documentation files (the
   3 // "Software"), to deal in the Software without restriction, including
   4 // without limitation the rights to use, copy, modify, merge, publish,
   5 // distribute, sublicense, and/or sell copies of the Software, and to
   6 // permit persons to whom the Software is furnished to do so, subject to
   7 // the following conditions:
   8 //
   9 // The above copyright notice and this permission notice shall be
  10 // included in all copies or substantial portions of the Software.
  11 //
  12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  19 //
  20 // Copyright (c) 2005 Novell, Inc. (http://www.novell.com)
  21 //
  22 // Author:
  23 //      Pedro Martínez Juliá <pedromj@gmail.com>
  24 //
  25
  26
  27 #if NET_2_0
  28
  29 using System;
  30 using System.Drawing;
  31 using System.ComponentModel;
  32
  33 namespace System.Windows.Forms {
  34
  35         public class DataGridViewColumnHeaderCell : DataGridViewHeaderCell {
  36
  37                 private SortOrder sortGlyphDirection = SortOrder.None;
  38                 private object header_text;
  39
  40                 public DataGridViewColumnHeaderCell () {
  41                 }
  42
  43                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
  44                 public SortOrder SortGlyphDirection {
  45                         get { return sortGlyphDirection; }
  46                         set { sortGlyphDirection = value; }
  47                 }
  48
  49                 public override object Clone () {
  50                         return MemberwiseClone();
  51                 }
  52
  53                 public override ContextMenuStrip GetInheritedContextMenuStrip (int rowIndex) {
  54                         if (rowIndex != -1) {
  55                                 throw new ArgumentOutOfRangeException("RowIndex is not -1");
  56                         }
  57                         if (base.ContextMenuStrip != null) {
  58                                 return base.ContextMenuStrip;
  59                         }
  60                         return base.GetInheritedContextMenuStrip(rowIndex); //////////////////////////////
  61                 }
  62
  63                 public override DataGridViewCellStyle GetInheritedStyle (DataGridViewCellStyle inheritedCellStyle, int rowIndex, bool includeColors) {
  64
  65                         DataGridViewCellStyle result;
  66
  67                         if (HasStyle) {
  68                                 result = Style;
  69                         } else {
  70                                 result = DataGridView.ColumnHeadersDefaultCellStyle;
  71                         }
  72
  73                         return result;
  74                 }
  75
  76                 public override string ToString () {
  77                         return GetType().Name;
  78                 }
  79
  80                 protected override AccessibleObject CreateAccessibilityInstance () {
  81                         return new DataGridViewColumnHeaderCellAccessibleObject(this);
  82                 }
  83
  84                 protected override object GetClipboardContent (int rowIndex, bool firstCell, bool lastCell, bool inFirstRow, bool inLastRow, string format) {
  85
  86                         string value;
  87
  88                         if (rowIndex != -1)
  89                                 throw new ArgumentOutOfRangeException ("rowIndex");
  90
  91                         value = GetValue (rowIndex) as string;
  92
  93                         string table_prefix = string.Empty, cell_prefix = string.Empty, row_prefix = string.Empty;
  94                         string table_suffix = string.Empty, cell_suffix = string.Empty, row_suffix = string.Empty;
  95
  96                         if (format == DataFormats.UnicodeText || format == DataFormats.Text) {
  97                                 if (lastCell && !inLastRow)
  98                                         cell_suffix = Environment.NewLine;
  99                                 else if (!lastCell)
 100                                         cell_suffix = "\t";
 101                         } else if (format == DataFormats.CommaSeparatedValue) {
 102                                 if (lastCell && !inLastRow)
 103                                         cell_suffix = Environment.NewLine;
 104                                 else if (!lastCell)
 105                                         cell_suffix = ",";
 106                         } else if (format == DataFormats.Html) {
 107                                 if (firstCell) {
 108                                         table_prefix = "<TABLE>";
 109                                         row_prefix = "<THEAD>";
 110                                 }
 111
 112                                 cell_prefix = "<TH>";
 113                                 cell_suffix = "</TH>";
 114
 115                                 if (lastCell) {
 116                                         row_suffix = "</THEAD>";
 117                                         if (inLastRow) {
 118                                                 table_suffix = "</TABLE>";
 119                                         }
 120                                 }
 121
 122                                 if (value == null) {
 123                                         value = "&nbsp;";
 124                                 }
 125                         } else {
 126                                 return value;
 127                         }
 128
 129                         if (value == null)
 130                                 value = string.Empty;
 131
 132                         value = table_prefix + row_prefix + cell_prefix + value + cell_suffix + row_suffix + table_suffix;
 133
 134                         return value;
 135
 136                 }
 137
 138                 protected override Rectangle GetContentBounds (Graphics graphics, DataGridViewCellStyle cellStyle, int rowIndex) {
 139                         return new Rectangle();
 140                 }
 141
 142                 protected override Size GetPreferredSize (Graphics graphics, DataGridViewCellStyle cellStyle, int rowIndex, Size constraintSize) {
 143                         throw new NotImplementedException();
 144                 }
 145
 146                 protected override object GetValue (int rowIndex) {
 147                         if (header_text != null)
 148                                 return header_text;
 149
 150                         if (OwningColumn != null && !OwningColumn.HeaderTextSet)
 151                                 return OwningColumn.Name;
 152
 153                         return null;
 154                 }
 155
 156                 protected override void Paint (Graphics graphics, Rectangle clipBounds, Rectangle cellBounds, int rowIndex, DataGridViewElementStates dataGridViewElementState, object value, object formattedValue, string errorText, DataGridViewCellStyle cellStyle, DataGridViewAdvancedBorderStyle advancedBorderStyle, DataGridViewPaintParts paintParts) {
 157                         // Prepaint
 158                         DataGridViewPaintParts pre = DataGridViewPaintParts.Background | DataGridViewPaintParts.SelectionBackground;
 159                         pre = pre & paintParts;
 160
 161                         base.Paint (graphics, clipBounds, cellBounds, rowIndex, dataGridViewElementState, value, formattedValue, errorText, cellStyle, advancedBorderStyle, pre);
 162
 163                         // Paint content
 164                         if ((paintParts & DataGridViewPaintParts.ContentForeground) == DataGridViewPaintParts.ContentForeground) {
 165                                 Color color = Selected ? cellStyle.SelectionForeColor : cellStyle.ForeColor;
 166
 167                                 TextFormatFlags flags = TextFormatFlags.EndEllipsis | TextFormatFlags.VerticalCenter | TextFormatFlags.TextBoxControl;
 168
 169                                 Rectangle contentbounds = cellBounds;
 170                                 contentbounds.Height -= 2;
 171                                 contentbounds.Width -= 2;
 172
 173                                 if (formattedValue != null)
 174                                         TextRenderer.DrawText (graphics, formattedValue.ToString (), cellStyle.Font, contentbounds, color, flags);
 175
 176                                 Point loc = new Point (cellBounds.Right - 14, cellBounds.Y + ((cellBounds.Height - 4) / 2));
 177
 178                                 if (sortGlyphDirection == SortOrder.Ascending) {
 179                                         using (Pen p = new Pen (color)) {
 180                                                 graphics.DrawLine (p, loc.X + 4, loc.Y + 1, loc.X + 4, loc.Y + 2);
 181                                                 graphics.DrawLine (p, loc.X + 3, loc.Y + 2, loc.X + 5, loc.Y + 2);
 182                                                 graphics.DrawLine (p, loc.X + 2, loc.Y + 3, loc.X + 6, loc.Y + 3);
 183                                                 graphics.DrawLine (p, loc.X + 1, loc.Y + 4, loc.X + 7, loc.Y + 4);
 184                                                 graphics.DrawLine (p, loc.X + 0, loc.Y + 5, loc.X + 8, loc.Y + 5);
 185                                         }
 186                                 } else if (sortGlyphDirection == SortOrder.Descending) {
 187                                         using (Pen p = new Pen (color)) {
 188                                                 graphics.DrawLine (p, loc.X + 4, loc.Y + 5, loc.X + 4, loc.Y + 4);
 189                                                 graphics.DrawLine (p, loc.X + 3, loc.Y + 4, loc.X + 5, loc.Y + 4);
 190                                                 graphics.DrawLine (p, loc.X + 2, loc.Y + 3, loc.X + 6, loc.Y + 3);
 191                                                 graphics.DrawLine (p, loc.X + 1, loc.Y + 2, loc.X + 7, loc.Y + 2);
 192                                                 graphics.DrawLine (p, loc.X + 0, loc.Y + 1, loc.X + 8, loc.Y + 1);
 193                                         }
 194                                 }
 195                         }
 196
 197                         // Postpaint
 198                         DataGridViewPaintParts post = DataGridViewPaintParts.Border;
 199                         post = post & paintParts;
 200
 201                         base.Paint (graphics, clipBounds, cellBounds, rowIndex, dataGridViewElementState, value, formattedValue, errorText, cellStyle, advancedBorderStyle, post);
 202                 }
 203
 204                 protected override bool SetValue (int rowIndex, object value) {
 205                         header_text = value;
 206                         return true;
 207                 }
 208
 209                 protected class DataGridViewColumnHeaderCellAccessibleObject : DataGridViewCellAccessibleObject {
 210
 211                         public DataGridViewColumnHeaderCellAccessibleObject (DataGridViewColumnHeaderCell owner) : base (owner) {
 212                         }
 213
 214                         public override Rectangle Bounds {
 215                                 get { return base.Bounds; }
 216                         }
 217
 218                         public override string DefaultAction {
 219                                 get { return base.DefaultAction; }
 220                         }
 221
 222                         public override string Name {
 223                                 get { return base.Name; }
 224                         }
 225
 226                         public override AccessibleObject Parent {
 227                                 get { return base.Parent; }
 228                         }
 229
 230                         public override AccessibleRole Role {
 231                                 get { return base.Role; }
 232                         }
 233
 234                         public override AccessibleStates State {
 235                                 get { return base.State; }
 236                         }
 237
 238                         public override string Value {
 239                                 get { return base.Value; }
 240                         }
 241
 242                         public override void DoDefaultAction () {
 243                                 base.DoDefaultAction();
 244                         }
 245
 246                         public override AccessibleObject Navigate (AccessibleNavigation navigationDirection) {
 247                                 return base.Navigate(navigationDirection);
 248                         }
 249
 250                         public override void Select (AccessibleSelection flags)
 251                         {
 252                                 base.Select (flags);
 253                         }
 254                 }
 255
 256         }
 257
 258 }
 259
 260 #endif