internal static bool DoTreeNode(int id, string text, ref bool open)
{
Window window = GetCurrentWindow();
if (window.SkipItems)
{
return(false);
}
window.TempData.LastItemId = id;
//get or create the root node
var container = window.RenderTree.CurrentContainer;
var node = container.GetNodeById(id);
text = Utility.FindRenderedText(text);
if (node == null)
{
//create nodes
node = new Node(id, $"TreeNode<{text}>");
node.AttachLayoutEntry();
node.UseBoxModel = true;
node.RuleSet.Replace(GUISkin.Current[GUIControlName.TreeNode]);
}
container.AppendChild(node);
var lineHeight = node.RuleSet.GetLineHeight();
node.RuleSet.ApplyOptions(Height(lineHeight));
node.ActiveSelf = true;
// rect
Rect rect = window.GetRect(id);
// interact
var pressed = GUIBehavior.ButtonBehavior(rect, id, out var hovered, out var held, ButtonFlags.PressedOnClickRelease);
node.State = (hovered && held) ? GUIState.Active : hovered ? GUIState.Hover : GUIState.Normal;
if (pressed)
{
open = !open;
}
// last item state
window.TempData.LastItemState = node.State;
using (var dc = node.RenderOpen())
{
dc.DrawRectangle(new Brush(node.RuleSet.BackgroundColor), null, rect);
dc.DrawGlyphRun(node.RuleSet, text, node.ContentRect.TopLeft + new Vector(rect.Height + node.PaddingLeft, 0));
dc.RenderArrow(rect.Min + new Vector(node.RuleSet.PaddingTop, lineHeight * 0.15),
node.Height, node.RuleSet.FontColor, open ? Internal.Direcion.Down : Internal.Direcion.Right, 0.7);
}
if (open)
{
window.CheckStackSize(id, true);
PushID(id);
BeginHorizontal("#TreeContent");
Space("Space", 20);
BeginVertical("#Items");
var cpId = HashCode.Combine(id, 23);
window.CheckStackSize(cpId, true);
PushID(cpId);
}
return(open);
}