DataGridViewRowHeaderCell.cs :  » 2.6.4-mono-.net-core » System.Windows.Forms » System » Windows » Forms » C# / CSharp Open Source

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C# / CSharp Open Source » 2.6.4 mono .net core » System.Windows.Forms 
System.Windows.Forms » System » Windows » Forms » DataGridViewRowHeaderCell.cs
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Copyright (c) 2005 Novell, Inc. (http://www.novell.com)
//
// Author:
//  Pedro Martnez Juli <pedromj@gmail.com>
//


#if NET_2_0

using System.Drawing;

namespace System.Windows.Forms{

  public class DataGridViewRowHeaderCell : DataGridViewHeaderCell {

    private string headerText;
    
    public DataGridViewRowHeaderCell ()
    {
    }

    public override object Clone ()
    {
      return MemberwiseClone();
    }

    public override ContextMenuStrip GetInheritedContextMenuStrip (int rowIndex)
    {
      if (DataGridView == null)
        return null;

      if (rowIndex < 0 || rowIndex >= DataGridView.Rows.Count)
        throw new ArgumentOutOfRangeException ("rowIndex");

      if (ContextMenuStrip != null)
        return ContextMenuStrip;

      return DataGridView.ContextMenuStrip;
    }

    public override DataGridViewCellStyle GetInheritedStyle (DataGridViewCellStyle inheritedCellStyle, int rowIndex, bool includeColors)
    {
      DataGridViewCellStyle result = new DataGridViewCellStyle (DataGridView.DefaultCellStyle);

      result.ApplyStyle (DataGridView.RowHeadersDefaultCellStyle);
        
      if (HasStyle)
        result.ApplyStyle (Style);
        
      return result;
    }

    public override string ToString ()
    {
      return base.ToString();
    }

    protected override AccessibleObject CreateAccessibilityInstance ()
    {
      return new DataGridViewRowHeaderCellAccessibleObject(this);
    }

    protected override object GetClipboardContent (int rowIndex, bool firstCell, bool lastCell, bool inFirstRow, bool inLastRow, string format)
    {
      string value;

      if (DataGridView == null)
        return null;

      if (rowIndex < 0 || rowIndex >= DataGridView.RowCount)
        throw new ArgumentOutOfRangeException ("rowIndex");
        
      value = GetValue (rowIndex) as string;

      string table_prefix = string.Empty, cell_prefix = string.Empty, row_prefix = string.Empty;
      string table_suffix = string.Empty, cell_suffix = string.Empty, row_suffix = string.Empty;

      if (format == DataFormats.UnicodeText || format == DataFormats.Text) {
        if (lastCell && !inLastRow)
          cell_suffix = Environment.NewLine;
        else if (!lastCell)
          cell_suffix = "\t";
      } else if (format == DataFormats.CommaSeparatedValue) {
        if (lastCell && !inLastRow)
          cell_suffix = Environment.NewLine;
        else if (!lastCell)
          cell_suffix = ",";
      } else if (format == DataFormats.Html) {
        if (inFirstRow) {
          table_prefix = "<TABLE>";
        }
        row_prefix = "<TR>";

        if (lastCell) {
          row_suffix = "</TR>";
          if (inLastRow) {
            table_suffix = "</TABLE>";
          }
        }

        cell_prefix = "<TD ALIGN=\"center\">";
        cell_suffix = "</TD>";

        if (value == null) {
          value = "&nbsp;";
        } else {
          value = "<B>" + value + "</B>";
        }
      } else {
        return value;
      }

      if (value == null)
        value = string.Empty;

      value = table_prefix + row_prefix + cell_prefix + value + cell_suffix + row_suffix + table_suffix;

      return value;
      
    }

    protected override Rectangle GetContentBounds (Graphics graphics, DataGridViewCellStyle cellStyle, int rowIndex)
    {
      if (DataGridView == null)
        return Rectangle.Empty;

      Size s = new Size (11, 18);
      return new Rectangle (24, (OwningRow.Height - s.Height) / 2, s.Width, s.Height);
    }

    protected override Rectangle GetErrorIconBounds (Graphics graphics, DataGridViewCellStyle cellStyle, int rowIndex)
    {
      if (DataGridView == null || string.IsNullOrEmpty (DataGridView.GetRowInternal (rowIndex).ErrorText))
        return Rectangle.Empty;

      Size error_icon = new Size (12, 11);
      return new Rectangle (new Point (Size.Width - error_icon.Width - 5, (Size.Height - error_icon.Height) / 2), error_icon);
    }

    protected internal override string GetErrorText (int rowIndex)
    {
      if (DataGridView == null)
        return string.Empty;
        
      return DataGridView.GetRowInternal (rowIndex).ErrorText;
    }

    protected override Size GetPreferredSize (Graphics graphics, DataGridViewCellStyle cellStyle, int rowIndex, Size constraintSize)
    {
      object o = FormattedValue;

      if (o != null) {
        Size s = DataGridViewCell.MeasureTextSize (graphics, o.ToString (), cellStyle.Font, TextFormatFlags.Default);
        s.Height = Math.Max (s.Height, 17);
        s.Width += 48;
        return s;
      } else
        return new Size (39, 17);
    }

    protected override object GetValue (int rowIndex)
    {
      if (headerText != null)
        return headerText;
        
      return null;
    }

    [MonoInternalNote ("Needs row header cell selected/edit pencil glyphs")]
    protected override void Paint (Graphics graphics, Rectangle clipBounds, Rectangle cellBounds, int rowIndex, DataGridViewElementStates cellState, object value, object formattedValue, string errorText, DataGridViewCellStyle cellStyle, DataGridViewAdvancedBorderStyle advancedBorderStyle, DataGridViewPaintParts paintParts)
    {
      // Prepaint
      DataGridViewPaintParts pre = DataGridViewPaintParts.Background | DataGridViewPaintParts.SelectionBackground;
      pre = pre & paintParts;

      base.Paint (graphics, clipBounds, cellBounds, rowIndex, cellState, value, formattedValue, errorText, cellStyle, advancedBorderStyle, pre);

      // Paint content background
      if ((paintParts & DataGridViewPaintParts.ContentBackground) == DataGridViewPaintParts.ContentBackground) {
        Color color = Selected ? cellStyle.SelectionForeColor : cellStyle.ForeColor;
        Pen p = ThemeEngine.Current.ResPool.GetPen (color);
        int x = cellBounds.Left + 6;

        if (DataGridView.CurrentRow != null && DataGridView.CurrentRow.Index == rowIndex) {
          DrawRightArrowGlyph (graphics, p, x, cellBounds.Top + (cellBounds.Height / 2) - 4);
          x += 7;
        }

        if (DataGridView.Rows[rowIndex].IsNewRow)
          DrawNewRowGlyph (graphics, p, x, cellBounds.Top + (cellBounds.Height / 2) - 4);
      }

      // Paint content
      if ((paintParts & DataGridViewPaintParts.ContentForeground) == DataGridViewPaintParts.ContentForeground) {
        Color color = Selected ? cellStyle.SelectionForeColor : cellStyle.ForeColor;

        TextFormatFlags flags = TextFormatFlags.EndEllipsis | TextFormatFlags.VerticalCenter | TextFormatFlags.TextBoxControl;

        Rectangle contentbounds = cellBounds;
        contentbounds.Height -= 2;
        contentbounds.Width -= 2;

        if (formattedValue != null)
          TextRenderer.DrawText (graphics, formattedValue.ToString (), cellStyle.Font, contentbounds, color, flags);
      }

      // Postpaint
      DataGridViewPaintParts post = DataGridViewPaintParts.Border | DataGridViewPaintParts.ErrorIcon;
      post = post & paintParts;

      base.Paint (graphics, clipBounds, cellBounds, rowIndex, cellState, value, formattedValue, errorText, cellStyle, advancedBorderStyle, post);
    }

    protected override void PaintBorder (Graphics graphics, Rectangle clipBounds, Rectangle cellBounds, DataGridViewCellStyle cellStyle, DataGridViewAdvancedBorderStyle advancedBorderStyle)
    {
      if (ThemeEngine.Current.DataGridViewRowHeaderCellDrawBorder (this, graphics, cellBounds))
        return;

      Pen p = GetBorderPen ();

      graphics.DrawLine (p, cellBounds.Left, cellBounds.Top, cellBounds.Left, cellBounds.Bottom - 1);
      graphics.DrawLine (p, cellBounds.Right - 1, cellBounds.Top, cellBounds.Right - 1, cellBounds.Bottom - 1);

      if (RowIndex == DataGridView.Rows.Count - 1 || RowIndex == -1)
        graphics.DrawLine (p, cellBounds.Left, cellBounds.Bottom - 1, cellBounds.Right - 1, cellBounds.Bottom - 1);
      else
        graphics.DrawLine (p, cellBounds.Left + 3, cellBounds.Bottom - 1, cellBounds.Right - 3, cellBounds.Bottom - 1);

      if (RowIndex == -1)
        graphics.DrawLine (p, cellBounds.Left, cellBounds.Top, cellBounds.Right - 1, cellBounds.Top);
    }
    
    internal override void PaintPartBackground (Graphics graphics, Rectangle cellBounds, DataGridViewCellStyle style)
    {
      if (ThemeEngine.Current.DataGridViewRowHeaderCellDrawBackground (this, graphics, cellBounds))
        return;
      base.PaintPartBackground (graphics, cellBounds, style);
    }

    internal override void PaintPartSelectionBackground (Graphics graphics, Rectangle cellBounds, DataGridViewElementStates cellState, DataGridViewCellStyle cellStyle)
    {
      if (ThemeEngine.Current.DataGridViewRowHeaderCellDrawSelectionBackground (this))
        return;
      base.PaintPartSelectionBackground (graphics, cellBounds, cellState, cellStyle);
    }

    private void DrawRightArrowGlyph (Graphics g, Pen p, int x, int y)
    {
      g.DrawLine (p, x, y, x, y + 8);
      g.DrawLine (p, x + 1, y + 1, x + 1, y + 7);
      g.DrawLine (p, x + 2, y + 2, x + 2, y + 6);
      g.DrawLine (p, x + 3, y + 3, x + 3, y + 5);
      g.DrawLine (p, x + 3, y + 4, x + 4, y + 4);
    }

    private void DrawNewRowGlyph (Graphics g, Pen p, int x, int y)
    {
      g.DrawLine (p, x, y + 4, x + 8, y + 4);
      g.DrawLine (p, x + 4, y, x + 4, y + 8);
      g.DrawLine (p, x + 1, y + 1, x + 7, y + 7);
      g.DrawLine (p, x + 7, y + 1, x + 1, y + 7);
    }

    internal override Rectangle InternalErrorIconsBounds {
      get { return GetErrorIconBounds (null, null, RowIndex); }
    }
    
    protected override bool SetValue (int rowIndex, object value)
    {
      headerText = (string) value;
      return true;
    }

    protected class DataGridViewRowHeaderCellAccessibleObject : DataGridViewCellAccessibleObject {

      public DataGridViewRowHeaderCellAccessibleObject (DataGridViewRowHeaderCell owner) : base(owner)
      {
      }

      public override Rectangle Bounds {
        get { return base.Bounds; }
      }

      public override string DefaultAction {
        get { return base.DefaultAction; }
      }

      public override string Name {
        get { return base.Name; }
      }

      public override AccessibleObject Parent {
        get { return base.Parent; }
      }

      public override AccessibleRole Role {
        get { return base.Role; }
      }

      public override AccessibleStates State {
        get { return base.State; }
      }
      
      public override string Value {
        get { return base.Value; }
      }

      public override void DoDefaultAction ()
      {
        base.DoDefaultAction();
      }

      public override AccessibleObject Navigate (AccessibleNavigation navigationDirection)
      {
        return base.Navigate(navigationDirection);
      }

      public override void Select (AccessibleSelection flags)
      {
        base.Select (flags);
      }
    }

  }

}

#endif
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