internal void PaintColumnHeaders(TreeRenderer renderer, ColumnHeaderCollection columns, Graphics g, bool treeControlHeader)
{
ColumnHeaderRendererEventArgs ce = new ColumnHeaderRendererEventArgs();
ce.Graphics = g;
ce.Tree = this.Tree;
ce.SortIndicatorColor = renderer.ColorTable.ColumnSortIndicatorColor;
ElementStyle defaultNormalStyle = GetDefaultColumnStyleNormal(renderer);
ElementStyle headerStyle = null;
if(treeControlHeader)
headerStyle = this.Tree.ColumnsBackgroundStyle == null ? GetDefaultHeaderStyle(renderer) : this.Tree.ColumnsBackgroundStyle;
else
headerStyle = this.Tree.NodesColumnsBackgroundStyle == null ? GetDefaultNodesHeaderStyle(renderer) : this.Tree.NodesColumnsBackgroundStyle;
if (Tree.ColumnStyleNormal != null && Tree.ColumnStyleNormal.Custom)
defaultNormalStyle = Tree.ColumnStyleNormal;
Point offset = Point.Empty;
if (this.Tree.AutoScroll)
{
offset = this.Tree.GetAutoScrollPositionOffset();
if (treeControlHeader)
offset.Y = 0;
}
Rectangle columnsBounds = columns.Bounds;
if (!treeControlHeader) columnsBounds.Offset(offset);
ElementStyleDisplayInfo di = new ElementStyleDisplayInfo(headerStyle, g, columnsBounds);
ElementStyleDisplay.Paint(di);
Color columnSeparator = (headerStyle != null && !headerStyle.BorderColor.IsEmpty) ? headerStyle.BorderColor : Color.Empty;
for (int i = 0; i < columns.Count; i++)
{
ColumnHeader column = columns.ColumnAtDisplayIndex(i);
if (!column.Visible) continue;
ElementStyle style = null;
if (column.StyleNormal != "")
style = Tree.Styles[column.StyleNormal].Copy();
else
style = defaultNormalStyle.Copy();
if (column.IsMouseDown)
{
if (column.StyleMouseDown != "")
style.ApplyStyle(Tree.Styles[column.StyleMouseDown]);
else if (Tree.ColumnStyleMouseDown != null)
style.ApplyStyle(Tree.ColumnStyleMouseDown);
}
else if (column.IsMouseOver)
{
if (column.StyleMouseOver != "")
style.ApplyStyle(Tree.Styles[column.StyleMouseOver]);
else if (Tree.ColumnStyleMouseOver != null)
style.ApplyStyle(Tree.ColumnStyleMouseOver);
}
ce.ColumnHeader = column;
Rectangle columnBounds = column.Bounds;
columnBounds.Offset(offset);
ce.Bounds = columnBounds;
ce.Style = style;
renderer.DrawColumnHeader(ce);
if (!columnSeparator.IsEmpty)
DisplayHelp.DrawLine(g, columnBounds.Right - (column.IsLastVisible ? 0 : 1), columnBounds.Y, columnBounds.Right - (column.IsLastVisible ? 0 : 1), columnBounds.Bottom - 1, columnSeparator, 1);
}
}
private void PaintGridLines(NodeDisplayContext context, ColumnHeaderCollection columnHeaderCollection, Rectangle bounds)
{
Color color = this.Tree.GridLinesColor.IsEmpty ? context.NodeRenderer.ColorTable.GridLines : this.Tree.GridLinesColor;
Graphics g = context.Graphics;
for (int i = 0; i < columnHeaderCollection.Count; i++)
{
ColumnHeader columnHeader = columnHeaderCollection.ColumnAtDisplayIndex(i);
if (!columnHeader.Visible || columnHeader.Bounds.Width <= 0) continue;
Rectangle r = columnHeader.Bounds;
r.Offset(context.Offset);
if (columnHeaderCollection.ParentNode == null)
{
r.Offset(bounds.Location);
if (!columnHeader.CellsBackColor.IsEmpty)
{
SmoothingMode oldSmoothing = g.SmoothingMode;
g.SmoothingMode = SmoothingMode.None;
Rectangle rBack = new Rectangle(r.X - 5, context.ClientRectangle.Y, r.Width + 4, context.ClientRectangle.Height);
using (SolidBrush brush = new SolidBrush(columnHeader.CellsBackColor))
g.FillRectangle(brush, rBack);
g.SmoothingMode = oldSmoothing;
}
}
DisplayHelp.DrawLine(g, r.Right - (columnHeader.IsLastVisible ? 0 : 1), bounds.Y, r.Right - (columnHeader.IsLastVisible ? 0 : 1), bounds.Bottom, color, 1);
}
}