From 3f66430d90d4d1ea694bc62b64faad215e06aa12 Mon Sep 17 00:00:00 2001
From: Ellpeck <megamaximal@gmail.com>
Date: Wed, 11 Sep 2019 21:01:08 +0200
Subject: [PATCH] made image automatically set its area dirty when necessary

---
 MLEM.Ui/Elements/Image.cs | 37 ++++++++++++++++++++++++++++---------
 1 file changed, 28 insertions(+), 9 deletions(-)

diff --git a/MLEM.Ui/Elements/Image.cs b/MLEM.Ui/Elements/Image.cs
index 2100ce2..95549f4 100644
--- a/MLEM.Ui/Elements/Image.cs
+++ b/MLEM.Ui/Elements/Image.cs
@@ -8,28 +8,47 @@ namespace MLEM.Ui.Elements {
     public class Image : Element {
 
         public Color Color = Color.White;
-        public TextureRegion Texture;
-        public bool ScaleToImage;
+        private TextureRegion texture;
+        public TextureRegion Texture {
+            get => this.texture;
+            set {
+                if (this.texture != value) {
+                    this.texture = value;
+                    if (this.scaleToImage)
+                        this.SetAreaDirty();
+                }
+            }
+        }
+        private bool scaleToImage;
+        public bool ScaleToImage {
+            get => this.scaleToImage;
+            set {
+                if (this.scaleToImage != value) {
+                    this.scaleToImage = value;
+                    this.SetAreaDirty();
+                }
+            }
+        }
         public bool MaintainImageAspect = true;
 
         public Image(Anchor anchor, Vector2 size, TextureRegion texture, bool scaleToImage = false) : base(anchor, size) {
-            this.Texture = texture;
-            this.ScaleToImage = scaleToImage;
+            this.texture = texture;
+            this.scaleToImage = scaleToImage;
             this.CanBeSelected = false;
             this.CanBeMoused = false;
         }
 
         protected override Point CalcActualSize(Rectangle parentArea) {
-            return this.ScaleToImage ? this.Texture.Size : base.CalcActualSize(parentArea);
+            return this.scaleToImage ? this.texture.Size : base.CalcActualSize(parentArea);
         }
 
         public override void Draw(GameTime time, SpriteBatch batch, float alpha) {
             if (this.MaintainImageAspect) {
-                var scale = Math.Min(this.DisplayArea.Width / (float) this.Texture.Width, this.DisplayArea.Height / (float) this.Texture.Height);
-                var imageOffset = new Vector2(this.DisplayArea.Width / 2F - this.Texture.Width * scale / 2, this.DisplayArea.Height / 2F - this.Texture.Height * scale / 2);
-                batch.Draw(this.Texture, this.DisplayArea.Location.ToVector2() + imageOffset, this.Color * alpha, 0, Vector2.Zero, scale, SpriteEffects.None, 0);
+                var scale = Math.Min(this.DisplayArea.Width / (float) this.texture.Width, this.DisplayArea.Height / (float) this.texture.Height);
+                var imageOffset = new Vector2(this.DisplayArea.Width / 2F - this.texture.Width * scale / 2, this.DisplayArea.Height / 2F - this.texture.Height * scale / 2);
+                batch.Draw(this.texture, this.DisplayArea.Location.ToVector2() + imageOffset, this.Color * alpha, 0, Vector2.Zero, scale, SpriteEffects.None, 0);
             } else {
-                batch.Draw(this.Texture, this.DisplayArea, this.Color * alpha);
+                batch.Draw(this.texture, this.DisplayArea, this.Color * alpha);
             }
             base.Draw(time, batch, alpha);
         }