public TreeViewRowDrawEventArgs(Graphics graphics, Rectangle clipRectangle, TreeNodeAdv node, DrawContext context, int row, Rectangle rowRect)
: base(graphics, clipRectangle)
{
_node = node;
_context = context;
_row = row;
_rowRect = rowRect;
}
protected override void OnPaint(PaintEventArgs e)
{
BeginPerformanceCount();
PerformanceAnalyzer.Start("OnPaint");
DrawContext context = new DrawContext();
context.Graphics = e.Graphics;
context.Font = this.Font;
context.Enabled = Enabled;
int y = 0;
int gridHeight = 0;
if (UseColumns)
{
DrawColumnHeaders(e.Graphics);
y += ColumnHeaderHeight;
if (Columns.Count == 0 || e.ClipRectangle.Height <= y)
{
return;
}
}
int firstRowY = _rowLayout.GetRowBounds(FirstVisibleRow).Y;
y -= firstRowY;
e.Graphics.ResetTransform();
e.Graphics.TranslateTransform(-OffsetX, y);
Rectangle displayRect = DisplayRectangle;
for (int row = FirstVisibleRow; row < RowCount; row++)
{
Rectangle rowRect = _rowLayout.GetRowBounds(row);
gridHeight += rowRect.Height;
if (rowRect.Y + y > displayRect.Bottom)
{
break;
}
else
{
DrawRow(e, ref context, row, rowRect);
}
}
if ((GridLineStyle & GridLineStyle.Vertical) == GridLineStyle.Vertical && UseColumns)
{
DrawVerticalGridLines(e.Graphics, firstRowY);
}
if (_dropPosition.Node != null && DragMode && HighlightDropPosition)
{
DrawDropMark(e.Graphics);
}
e.Graphics.ResetTransform();
DrawScrollBarsBox(e.Graphics);
if (DragMode && _dragBitmap != null)
{
e.Graphics.DrawImage(_dragBitmap, PointToClient(MousePosition));
}
PerformanceAnalyzer.Finish("OnPaint");
EndPerformanceCount(e);
}