public void SetNodePainter(TreeNode node, Color backColor, Color foreColor)
{
if (view.IsNull())
{
return;
}
if (view.Painter.ContainsKey(node))
{
view.Painter[node].BackColor = backColor;
view.Painter[node].ForeColor = foreColor;
}
else
{
view.Painter.TryAdd(node, new UITreeNodePainter()
{
BackColor = backColor, ForeColor = foreColor
});
}
view.Invalidate();
}
public void EnsureVisible()
{
TreeViewEx.NodeEnumeratorEx nodes;
int nodeFromTop;
int nodeNo;
while (true)
{
// Find "this" node number and position from the top control.
nodeFromTop = -1;
nodeNo = 0;
bool nodeFound = false;
nodes = new TreeViewEx.NodeEnumeratorEx(treeView.nodes);
while (nodes.MoveNext())
{
if (nodes.currentNode == treeView.topNode)
{
// We are at the top of the control.
nodeFromTop = 0;
}
if (nodes.currentNode == this)
{
if (nodeFromTop < 0)
{
treeView.topNode = this;
treeView.Invalidate();
return;
}
nodeFound = true;
break;
}
if (nodeFromTop >= 0)
{
nodeFromTop++;
}
nodeNo++;
}
if (nodeFound)
{
break;
}
else
{
// Make sure all parents are expanded and see if its now visible.
TreeNodeEx node = this;
TreeNodeEx highestNode = node;
for (; node != null; node = node.Parent)
{
node.expanded = true;
highestNode = node;
}
treeView.InvalidateDown(highestNode);
}
}
int visibleNodes = treeView.VisibleCountActual;
// See if its already visible.
if (nodeFromTop < visibleNodes)
{
return;
}
// Set the top node no we want to make this node 1 up from the bottom.
nodeFromTop = nodeNo - visibleNodes + 1;
if (nodeFromTop < 0)
{
nodeFromTop = 0;
}
// Find the node corresponding to this node no.
nodes.Reset();
nodeNo = 0;
while (nodes.MoveNext())
{
if (nodeFromTop == nodeNo)
{
treeView.topNode = nodes.currentNode;
treeView.Invalidate();
break;
}
nodeNo++;
}
}
