internal static ComboBoxContext comboBoxContext;//TODO move this to Window.storage
public static int ComboBox(Rect rect, string[] texts)
{
var window = GetCurrentWindow();
if (window.SkipItems)
{
return(comboBoxContext.SelectedIndex);
}
//get or create the root node
var id = window.GetID(texts);
var container = window.AbsoluteVisualList;
var node = (Node)container.Find(visual => visual.Id == id);
if (node == null)
{
//create button node
node = new Node(id, $"Combobox<{texts[0]}..>");
container.Add(node);
node.UseBoxModel = true;
node.RuleSet.Replace(GUISkin.Current[GUIControlName.ComboBox]);
//set initial states TODO move to shared storage
GUI.comboBoxContext = new ComboBoxContext();
GUI.comboBoxContext.Texts = texts;
GUI.comboBoxContext.Text = texts[0];
GUI.comboBoxContext.SelectedIndex = 0;
}
node.RuleSet.ApplyStack();
node.ActiveSelf = true;
// rect
node.Rect = window.GetRect(rect);
// interact
var pressed = GUIBehavior.ButtonBehavior(node.Rect, node.Id, out var hovered, out var held);
if (pressed)
{
node.State = GUIState.Active;
comboBoxContext.WindowOpened = !comboBoxContext.WindowOpened;
}
comboBoxContext.Text = comboBoxContext.Texts[comboBoxContext.SelectedIndex];
// last item state
window.TempData.LastItemState = node.State;
//combo
if (comboBoxContext.WindowOpened)
{
//calculate window rect
Rect comboPopupWindowRect;
{
var maxLength = 0;
var maxLengthString = string.Empty;
foreach (var s in texts)
{
if (s.Length <= maxLength)
{
continue;
}
maxLength = s.Length;
maxLengthString = s;
}
var size = node.RuleSet.CalcSize(maxLengthString);
size.Height *= texts.Length;
size += new Vector(100, 100);
//TEMP HACK Extend the size a little: otherwise a LayoutException will happen
var clientPos = node.Rect.BottomLeft;
comboPopupWindowRect = new Rect(clientPos, size);
}
GUILayout.SetNextWindowPos(comboPopupWindowRect.Location);
var clickedIndx = -1;
Begin($"##ComboWindow_{node.Name}", comboPopupWindowRect,
WindowFlags.Popup | WindowFlags.NoTitleBar | WindowFlags.NoCollapse
| WindowFlags.NoMove | WindowFlags.NoResize | WindowFlags.NoScrollbar);
{
GUILayout.BeginVertical("ComboBox");
for (var i = 0; i < texts.Length; i++)
{
if (GUILayout.Button(texts[i]))
{
clickedIndx = i;
}
}
GUILayout.EndVertical();
}
End();
if (clickedIndx >= 0)
{
comboBoxContext.SelectedIndex = clickedIndx;
comboBoxContext.WindowOpened = false;
node.State = Normal;
}
}
//render
using var g = node.RenderOpen();
var ruleSet = node.RuleSet;
g.DrawBoxModel(node.RuleSet, node.Rect);
g.RenderArrow(node.Rect.Min + new Vector(node.PaddingLeft, 0), node.Height,
node.RuleSet.FontColor, Internal.Direcion.Down, 1.0);
g.DrawGlyphRun(comboBoxContext.Text, ruleSet.FontSize, ruleSet.FontFamily, ruleSet.FontColor,
node.Rect.Min + new Vector(node.Height + ruleSet.PaddingLeft, ruleSet.PaddingTop));
return(comboBoxContext.SelectedIndex);
}
