/// <summary>
/// Raises the Paint event
/// </summary>
/// <param name="e">A PaintHeaderEventArgs that contains the event data</param>
protected override void OnPaint(PaintHeaderEventArgs e)
{
base.OnPaint(e);
if (e.Column == null)
{
return;
}
Rectangle textRect = this.ClientRectangle;
Rectangle imageRect = Rectangle.Empty;
if (e.Column.Image != null)
{
imageRect = this.CalcImageRect();
textRect.Width -= imageRect.Width;
textRect.X += imageRect.Width;
if (e.Column.ImageOnRight)
{
imageRect.X = this.ClientRectangle.Right - imageRect.Width;
textRect.X = this.ClientRectangle.X;
}
this.DrawColumnHeaderImage(e.Graphics, e.Column.Image, imageRect, e.Column.Enabled);
}
if (e.Column.SortOrder != SortOrder.None)
{
Rectangle arrowRect = this.CalcSortArrowRect();
arrowRect.X = textRect.Right - arrowRect.Width;
textRect.Width -= arrowRect.Width;
this.DrawSortArrow(e.Graphics, arrowRect, e.Column.SortOrder, e.Column.Enabled);
}
if (e.Column.Text == null)
{
return;
}
if (e.Column.Text.Length > 0 && textRect.Width > 0)
{
if (e.Column.Enabled)
{
e.Graphics.DrawString(e.Column.Text, this.Font, this.ForeBrush, textRect, this.StringFormat);
}
else
{
using (SolidBrush brush = new SolidBrush(SystemPens.GrayText.Color))
{
e.Graphics.DrawString(e.Column.Text, this.Font, brush, textRect, this.StringFormat);
}
}
}
}
/// <summary>
/// Raises the PaintBackground event
/// </summary>
/// <param name="e">A PaintHeaderEventArgs that contains the event data</param>
protected override void OnPaintBackground(PaintHeaderEventArgs e)
{
base.OnPaintBackground(e);
if (e.Column == null)
{
ThemeManager.DrawColumnHeader(e.Graphics, e.HeaderRect, ColumnHeaderStates.Normal);
}
else
{
ThemeManager.DrawColumnHeader(e.Graphics, e.HeaderRect, (ColumnHeaderStates) e.Column.ColumnState);
}
}
/// <summary>
/// Paints the Table's Column headers
/// </summary>
/// <param name="e">A PaintEventArgs that contains the event data</param>
protected void OnPaintHeader(PaintEventArgs e)
{
// only bother if we actually get to paint something
if (!this.HeaderRectangle.IntersectsWith(e.ClipRectangle))
{
return;
}
int xPos = this.DisplayRectangle.Left;
bool needDummyHeader = true;
//
PaintHeaderEventArgs phea = new PaintHeaderEventArgs(e.Graphics, e.ClipRectangle);
for (int i = 0; i < this.ColumnModel.Columns.Count; i++)
{
// check that the column isn't hidden
if (this.ColumnModel.Columns[i].Visible)
{
Rectangle colHeaderRect = new Rectangle(xPos, this.BorderWidth, this.ColumnModel.Columns[i].Width, this.HeaderHeight);
// check that the column intersects with the clipping rect
if (e.ClipRectangle.IntersectsWith(colHeaderRect))
{
// move and resize the headerRenderer
this.headerRenderer.Bounds = new Rectangle(xPos, this.BorderWidth, this.ColumnModel.Columns[i].Width, this.HeaderHeight);
// set the clipping area to the header renderers bounds
phea.Graphics.SetClip(Rectangle.Intersect(e.ClipRectangle, this.headerRenderer.Bounds));
// draw the column header
phea.SetColumn(this.ColumnModel.Columns[i]);
phea.SetColumnIndex(i);
phea.SetTable(this);
phea.SetHeaderStyle(this.HeaderStyle);
phea.SetHeaderRect(this.headerRenderer.Bounds);
// let the user get the first crack at painting the header
this.OnBeforePaintHeader(phea);
// only send to the renderer if the user hasn't
// set the handled property
if (!phea.Handled)
{
this.headerRenderer.OnPaintHeader(phea);
}
// let the user have another go
this.OnAfterPaintHeader(phea);
}
// set the next column start position
xPos += this.ColumnModel.Columns[i].Width;
// if the next start poition is past the right edge
// of the clipping rectangle then we don't need to
// draw anymore
if (xPos >= e.ClipRectangle.Right)
{
return;
}
// check is the next column position is past the
// right edge of the table. if it is, get out of
// here as we don't need to draw anymore columns
if (xPos >= this.ClientRectangle.Width)
{
needDummyHeader = false;
break;
}
}
}
if (needDummyHeader)
{
// move and resize the headerRenderer
this.headerRenderer.Bounds = new Rectangle(xPos, this.BorderWidth, this.ClientRectangle.Width - xPos + 2, this.HeaderHeight);
phea.Graphics.SetClip(Rectangle.Intersect(e.ClipRectangle, this.headerRenderer.Bounds));
phea.SetColumn(null);
phea.SetColumnIndex(-1);
phea.SetTable(this);
phea.SetHeaderStyle(this.HeaderStyle);
phea.SetHeaderRect(this.headerRenderer.Bounds);
// let the user get the first crack at painting the header
this.OnBeforePaintHeader(phea);
// only send to the renderer if the user hasn't
// set the handled property
if (!phea.Handled)
{
this.headerRenderer.OnPaintHeader(phea);
}
// let the user have another go
this.OnAfterPaintHeader(phea);
}
}
/// <summary>
/// Raises the BeforePaintHeader event
/// </summary>
/// <param name="e">A PaintCellEventArgs that contains the event data</param>
protected virtual void OnBeforePaintHeader(PaintHeaderEventArgs e)
{
if (BeforePaintHeader != null)
{
BeforePaintHeader(this, e);
}
}
/// <summary>
/// Raises the AfterPaintHeader event
/// </summary>
/// <param name="e">A PaintHeaderEventArgs that contains the event data</param>
protected virtual void OnAfterPaintHeader(PaintHeaderEventArgs e)
{
if (AfterPaintHeader != null)
{
AfterPaintHeader(this, e);
}
}
/// <summary>
/// Raises the PaintBackground event
/// </summary>
/// <param name="e">A PaintHeaderEventArgs that contains the event data</param>
protected override void OnPaintBackground(PaintHeaderEventArgs e)
{
base.OnPaintBackground(e);
e.Graphics.FillRectangle(this.BackBrush, this.Bounds);
}
/// <summary>
/// Raises the PaintBackground event
/// </summary>
/// <param name="e">A PaintHeaderEventArgs that contains the event data</param>
protected virtual void OnPaintBackground(PaintHeaderEventArgs e)
{
}
/// <summary>
/// Raises the Paint event
/// </summary>
/// <param name="e">A PaintHeaderEventArgs that contains the event data</param>
protected virtual void OnPaint(PaintHeaderEventArgs e)
{
}
/// <summary>
/// Raises the PaintHeader event
/// </summary>
/// <param name="e">A PaintHeaderEventArgs that contains the event data</param>
public virtual void OnPaintHeader(PaintHeaderEventArgs e)
{
// paint the Column header's background
this.OnPaintBackground(e);
// paint the Column headers foreground
this.OnPaint(e);
}
/// <summary>
/// Raises the PaintBackground event
/// </summary>
/// <param name="e">A PaintHeaderEventArgs that contains the event data</param>
protected override void OnPaintBackground(PaintHeaderEventArgs e)
{
base.OnPaintBackground(e);
if (e.Column == null || e.Column.ColumnState != ColumnState.Pressed)
{
using (LinearGradientBrush brush = new LinearGradientBrush(e.HeaderRect, this.StartColor, this.EndColor, LinearGradientMode.Vertical))
{
e.Graphics.FillRectangle(brush, e.HeaderRect);
}
using (Pen pen = new Pen(this.EndColor))
{
e.Graphics.DrawLine(pen, e.HeaderRect.Left, e.HeaderRect.Top, e.HeaderRect.Right-2, e.HeaderRect.Top);
e.Graphics.DrawLine(pen, e.HeaderRect.Left, e.HeaderRect.Top, e.HeaderRect.Left, e.HeaderRect.Bottom-1);
}
using (Pen pen = new Pen(this.StartColor))
{
e.Graphics.DrawLine(pen, e.HeaderRect.Right-1, e.HeaderRect.Top, e.HeaderRect.Right-1, e.HeaderRect.Bottom-1);
e.Graphics.DrawLine(pen, e.HeaderRect.Left+1, e.HeaderRect.Bottom-1, e.HeaderRect.Right-1, e.HeaderRect.Bottom-1);
}
}
else
{
Color pressed = this.PressedColor;
if (pressed == Color.Empty)
{
pressed = ControlPaint.Light(this.startColor);
}
using (SolidBrush brush = new SolidBrush(pressed))
{
e.Graphics.FillRectangle(brush, e.HeaderRect);
}
using (Pen pen = new Pen(this.StartColor))
{
e.Graphics.DrawRectangle(pen, e.HeaderRect.X, e.HeaderRect.Y, e.HeaderRect.Width-1, e.HeaderRect.Height-1);
}
}
}
