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 ElementStyle GetDefaultNodesHeaderStyle(TreeRenderer renderer)
{
if (renderer != null && renderer.Office2007ColorTable != null)
{
return renderer.Office2007ColorTable.StyleClasses[ElementStyleClassKeys.TreeNodesColumnsHeaderKey] as ElementStyle;
}
else
{
ElementStyle style = new ElementStyle();
style.BackColor = ColorScheme.GetColor(0xF9FCFD);
style.BackColor2 = ColorScheme.GetColor(0xD3DBE9);
style.BackColorGradientAngle = 90;
style.TextColor = ColorScheme.GetColor(0x000000);
style.BorderColor = ColorScheme.GetColor(0x9EB6CE);
style.BorderBottom = eStyleBorderType.Solid;
style.BorderBottomWidth = 1;
style.BorderLeft = eStyleBorderType.Solid;
style.BorderLeftWidth = 1;
style.BorderTop = eStyleBorderType.Solid;
style.BorderTopWidth = 1;
return style;
}
}
private ElementStyle GetDefaultColumnStyleNormal(TreeRenderer renderer)
{
if (renderer != null && renderer.Office2007ColorTable != null)
{
return renderer.Office2007ColorTable.StyleClasses[ElementStyleClassKeys.TreeColumnKey] as ElementStyle;
}
else
{
ElementStyle style = new ElementStyle();
style.TextColor = ColorScheme.GetColor(0x000000);
return style;
}
}