public void OnTreeThemeChanged(TreeViewTheme theme)
{
if (TreeThemeChanged != null)
{
TreeThemeChanged(this, theme);
}
}
// Aga.Controls is basically just TreeViewAdv and all the utility stuff
// needed to make it work. These are extensions added to try to help do
// normal things like insert and remove nodes because the way the
// TreeViewAdv control works is very strange.
//
// TreeViewAdv uses two layers of nodes. One set of nodes (class
// TreeNodeAdv) is used to return user selection information and the other
// set of nodes (class Node) is used to create the tree and store data in.
// Both sets confusingly hold navigation information. The Tag property
// of each (TreeNodeAdv) points to one (Node) which holds the data, so
// each time you check the selection of nodes you get a list of
// (TreeNodeAdv)s but you can only add (Node)s to the tree.
// This is not actually an extension method, but it is needed to work with
// TreeViewAdv and is not form-specific so I placed it here.
public static void ColoredTextNode_DrawText(object sender, DrawEventArgs e)
{
TreeViewTheme theme = (e.Node.Tree as WTTreeView).Theme;
// When a text node is drawn, this callback is called to determine
// the colors to use. It is not necessary to set or modify any colors
// in e (DrawEventArgs) unless custom colors are desired. The color of
// nodes usually depends on whether they are selected or active. That
// information is stored in e.Context.DrawSelectionMode.
// e.Node is a TreeNodeAdv navigation node. e.Node.Tag points to the
// actual data node which must be of type Node or a descendant of
// Node. It is ColoredTextNode in this program.
ColoredTextNode node = e.Node.Tag as ColoredTextNode;
// The node is drawn with different colors depending on whether it is
// selected and whether or not the control is active. The state is
// provided in e.Context.DrawSelection.
//if (e.Context.DrawSelection == DrawSelectionMode.None)
//{
// e.TextColor = theme.ForeColor;
// e.BackgroundBrush = theme.BackBrush;
//}
if (e.Context.DrawSelection == DrawSelectionMode.None)
{
e.TextColor = (e.Node.Tag as ColoredTextNode).ForeColor;
e.BackgroundBrush = theme.BackBrush;
}
else if (e.Context.DrawSelection == DrawSelectionMode.Active)
{
e.TextColor = theme.HighlightForeColor;
e.BackgroundBrush = theme.HighlightBackBrush;
}
else if (e.Context.DrawSelection == DrawSelectionMode.Inactive)
{
e.TextColor = theme.InactiveForeColor;
e.BackgroundBrush = theme.InactiveBackBrush;
}
else if (e.Context.DrawSelection == DrawSelectionMode.FullRowSelect)
{
e.TextColor = theme.HighlightForeColor;
e.BackgroundBrush = theme.BackBrush;
}
if (!e.Context.Enabled)
{
e.TextColor = theme.DisabledForeColor;
}
// Apply a custom font if the node has one
if (node.Font != null)
{
e.Font = node.Font;
}
}
public void OnTreeThemeChanged(InventoryList ilist, TreeViewTheme theme)
{
Tree.Theme = theme;
}
