ItemSlot.cs

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using ReLogic.Content;
using Terraria;
using Terraria.UI;

namespace AutoTrash
{
	internal class ItemSlot : UIElement
	{
		public static Texture2D backgroundTexture = Terraria.GameContent.TextureAssets.InventoryBack9.Value;

		private Asset<Texture2D> _texture;
		//	private float _visibilityActive = 1f;
		//		private float _visibilityInactive = 0.4f;
		private float scale = 0.6f;
		internal int id;
		internal Item item;

		public ItemSlot(int id) {
			this._texture = Terraria.GameContent.TextureAssets.Item[id];
			this.id = id;
			this.item = new Item();
			item.SetDefaults(id);

			this.Width.Set(backgroundTexture.Width * scale, 0f);
			this.Height.Set(backgroundTexture.Height * scale, 0f);
		}

		public override int CompareTo(object obj) {
			ItemSlot other = obj as ItemSlot;
			return id.CompareTo(other.id);
		}

		protected override void DrawSelf(SpriteBatch spriteBatch) {
			CalculatedStyle dimensions = base.GetDimensions();
			//spriteBatch.Draw(this._texture, dimensions.Position(), Color.White * (base.IsMouseHovering ? this._visibilityActive : this._visibilityInactive));

			spriteBatch.Draw(backgroundTexture, dimensions.Position(), null, Color.White, 0f, Vector2.Zero, scale, SpriteEffects.None, 0f);
			//Texture2D texture2D = Main.itemTexture[this.item.type];
			Main.instance.LoadItem(item.type);
			Rectangle rectangle2;
			if (Main.itemAnimations[id] != null) {
				rectangle2 = Main.itemAnimations[id].GetFrame(_texture.Value);
			}
			else {
				rectangle2 = _texture.Frame(1, 1, 0, 0);
			}
			float num = 1f;
			float num2 = (float)backgroundTexture.Width * scale;
			if ((float)rectangle2.Width > num2 || (float)rectangle2.Height > num2) {
				if (rectangle2.Width > rectangle2.Height) {
					num = num2 / (float)rectangle2.Width;
				}
				else {
					num = num2 / (float)rectangle2.Height;
				}
			}
			Vector2 drawPosition = dimensions.Position();
			drawPosition.X += (float)backgroundTexture.Width * scale / 2f - (float)rectangle2.Width * num / 2f;
			drawPosition.Y += (float)backgroundTexture.Height * scale / 2f - (float)rectangle2.Height * num / 2f;

			item.GetColor(Color.White);
			Color alphaColor = item.GetAlpha(Color.White);
			Color colorColor = item.GetColor(Color.White);
			//spriteBatch.Draw(_texture, drawPosition, new Rectangle?(rectangle2), this.item.GetAlpha(Color.White), 0f, Vector2.Zero, num, SpriteEffects.None, 0f);
			spriteBatch.Draw(_texture.Value, drawPosition, new Rectangle?(rectangle2), alphaColor, 0f, Vector2.Zero, num, SpriteEffects.None, 0f);
			if (this.item.color != Color.Transparent) {
				spriteBatch.Draw(_texture.Value, drawPosition, new Rectangle?(rectangle2), colorColor, 0f, Vector2.Zero, num, SpriteEffects.None, 0f);
			}
			//if (this.item.stack > 1)
			//{
			//	spriteBatch.DrawString(Main.fontItemStack, this.item.stack.ToString(), new Vector2(dimensions.Position().X + 10f * scale, dimensions.Position().Y + 26f * scale), Color.White, 0f, Vector2.Zero, scale, SpriteEffects.None, 0f);
			//}


			if (IsMouseHovering) {
				//Main.toolTip = item.Clone();
				Main.hoverItemName = item.Name;
				//ItemChecklistUI.hoverText = item.name + (item.modItem != null ? " [" + item.modItem.mod.Name + "]" : "");
			}
		}

		public override void LeftClick(UIMouseEvent evt) {
			var autoTrashPlayer = Main.LocalPlayer.GetModPlayer<AutoTrashPlayer>();
			autoTrashPlayer.AutoTrashItems.RemoveAll(x => x.type == this.item.type);
			AutoTrash.instance.autoTrashListUI.UpdateNeeded();
		}
	}
}