internal NodeFilteringStatus GetNodeFilteringStatus(TreeNode node)
{
NodeFilteringStatus stat = NodeFilteringStatus.Normal;
if (node != null && node.Tag != null && IsFiltering)
{
if (!IsFullyExpaned(node.Tag))
{
stat |= NodeFilteringStatus.PartiallyExpanded;
}
bool anymatched = IsMatched(node.Tag);
if (anymatched)
{
stat |= NodeFilteringStatus.Visible;
// any child mat
if (m_treeView.GetChildren(node.Tag).Any(IsMatched))
{
stat |= NodeFilteringStatus.ChildVisible;
}
}
}
return(stat);
}
/// <summary>
/// Draws the expander icon at the given location, in the state given by
/// the node's Expanded property and the size specified by ExpanderSize</summary>
/// <param name="node">The node to draw an expander icon for</param>
/// <param name="g">The current GDI+ graphics object</param>
/// <param name="x">The x-coordinate of the upper-left corner of the expander icon</param>
/// <param name="y">The y-coordinate of the upper-left corner of the expander icon</param>
public virtual void DrawExpander(TreeControl.Node node, Graphics g, int x, int y)
{
NodeFilteringStatus
stat = FilteringStatus != null
? FilteringStatus(node) : NodeFilteringStatus.Normal;
bool partial = (stat & NodeFilteringStatus.PartiallyExpanded) == NodeFilteringStatus.PartiallyExpanded;
bool hasChildMatch = (stat & NodeFilteringStatus.ChildVisible) == NodeFilteringStatus.ChildVisible;
Brush bkg = null;
Pen frg = null;
if (node.Expanded)
{
if (partial)
{
bkg = NoMatchHighlightBrush;
}
else
{
m_tmp.Color = m_expanderPen.Color;
bkg = m_tmp;
}
}
else
{
if (hasChildMatch)
{
bkg = m_matchedHighlightBrush;
}
else
{
frg = m_expanderPen;
}
}
node.PartiallyExpanded = false; // reset
GdiUtil.DrawExpander(g, x, y, ExpanderSize.Height, node.Expanded, bkg, frg);
//node.PartiallyExpanded = false; // reset
//GdiUtil.DrawExpander(x, y, ExpanderSize.Height, m_expanderPen, node.Expanded, g);
}
