From 4943a7b6f091a47241149cafc883e5237bec0bc6 Mon Sep 17 00:00:00 2001
From: Ellpeck <megamaximal@gmail.com>
Date: Fri, 9 Aug 2019 19:39:51 +0200
Subject: [PATCH] hiding elements

---
 MLEM.Ui/Elements/Element.cs | 13 +++++++++----
 MLEM.Ui/UiSystem.cs         | 12 ++++++++----
 2 files changed, 17 insertions(+), 8 deletions(-)

diff --git a/MLEM.Ui/Elements/Element.cs b/MLEM.Ui/Elements/Element.cs
index e74d17f..eb89f39 100644
--- a/MLEM.Ui/Elements/Element.cs
+++ b/MLEM.Ui/Elements/Element.cs
@@ -50,6 +50,7 @@ namespace MLEM.Ui.Elements {
 
         public UiSystem System { get; private set; }
         public Element Parent { get; private set; }
+        public bool IsHidden;
         private readonly List<Element> children = new List<Element>();
 
         private Rectangle area;
@@ -221,13 +222,17 @@ namespace MLEM.Ui.Elements {
         }
 
         public virtual void Draw(GameTime time, SpriteBatch batch, Color color) {
-            foreach (var child in this.children)
-                child.Draw(time, batch, color);
+            foreach (var child in this.children) {
+                if (!child.IsHidden)
+                    child.Draw(time, batch, color);
+            }
         }
 
         public virtual void DrawUnbound(GameTime time, SpriteBatch batch, Color color, BlendState blendState = null, SamplerState samplerState = null) {
-            foreach (var child in this.children)
-                child.DrawUnbound(time, batch, color, blendState, samplerState);
+            foreach (var child in this.children) {
+                if (!child.IsHidden)
+                    child.DrawUnbound(time, batch, color, blendState, samplerState);
+            }
         }
 
         public void SetUiSystem(UiSystem system) {
diff --git a/MLEM.Ui/UiSystem.cs b/MLEM.Ui/UiSystem.cs
index 1294a0b..d2104fa 100644
--- a/MLEM.Ui/UiSystem.cs
+++ b/MLEM.Ui/UiSystem.cs
@@ -41,12 +41,16 @@ namespace MLEM.Ui {
             var col = color ?? Color.White;
 
             batch.Begin(SpriteSortMode.Deferred, blendState, samplerState, transformMatrix: Matrix.CreateScale(this.GlobalScale));
-            foreach (var root in this.rootElements)
-                root.Element.Draw(time, batch, col);
+            foreach (var root in this.rootElements) {
+                if (!root.Element.IsHidden)
+                    root.Element.Draw(time, batch, col);
+            }
             batch.End();
 
-            foreach (var root in this.rootElements)
-                root.Element.DrawUnbound(time, batch, col, blendState, samplerState);
+            foreach (var root in this.rootElements) {
+                if (!root.Element.IsHidden)
+                    root.Element.DrawUnbound(time, batch, col, blendState, samplerState);
+            }
         }
 
         public void Add(string name, Element root) {