public void OnPaint(RowPaintArgs e)
{
if (GridView == null || GridView.HeaderRow == null)
{
return;
}
if (HasLeftExpander)
{
// paint background
using (Brush brush = new SolidBrush(BackColor))
{
e.Graphics.FillRectangle(brush, e.Rectangle);
}
if (BorderPen != null)
{
e.Graphics.DrawRectangle(BorderPen, e.Rectangle);
}
Image im = Expanded ? ExpandedImage : ShrunkenImage;
e.Graphics.DrawImage(im, e.Rectangle.X + im.Width, e.Rectangle.Y + im.Height, im.Width, im.Height);
}
// paint this row
int totalHeight = RowHeight;
int left = e.Rectangle.Left + LeftOffset;
int top = e.Rectangle.Top;
foreach (string col in GridView.HeaderRow.Columns)
{
GridItemBase item = GetItem(col);
int itemwidth = GridView.GetColumnWidth(col, ItemColumnSpan(item, col));
if (left >= e.ClipRectangle.Left - itemwidth && left <= e.ClipRectangle.Right + itemwidth)
{
item.OnPaint(new ItemPaintArgs(e.Graphics, new Rectangle(left, top, itemwidth, totalHeight),
Selected ? ItemState.Selected : ItemState.Normal));
}
left += GridView.GetColumnWidth(col, 1);
}
// paint subrows
if (HasVisibleChildren)
{
top += RowHeight + RowSeparation;
foreach (GridRow row in Rows)
{
int rowheight = row.RowAndChildrenHeight;
if (top >= e.ClipRectangle.Top - rowheight && top <= e.ClipRectangle.Bottom + rowheight)
{
row.OnPaint(new RowPaintArgs(e.Graphics, e.ClipRectangle, new Rectangle(e.Rectangle.Left, top, e.Rectangle.Width, rowheight)));
}
top += rowheight + row.SpaceAfter;
}
}
}
