Creative tab api part 1. I'll do the rest tomorrow I'm too tired

modules/entity/build.gradle

@@ -1 +1,4 @@
-portingLib.addModuleDependency("mixin_extensions")
+portingLib {
+	addModuleDependency("mixin_extensions")
+	enableTestMod()
+}

modules/items/build.gradle

@@ -0,0 +1 @@
+portingLib.enableTestMod()

modules/items/src/main/java/io/github/fabricators_of_create/porting_lib/item/api/extensions/CreativeModeTabExt.java

@@ -0,0 +1,15 @@
+package io.github.fabricators_of_create.porting_lib.item.api.extensions;
+
+import io.github.fabricators_of_create.porting_lib.item.api.itemgroup.PortingLibCreativeTab;
+import net.minecraft.resources.ResourceLocation;
+
+import javax.annotation.Nullable;
+
+import java.util.List;
+
+public interface CreativeModeTabExt {
+	void setPortingData(PortingLibCreativeTab.TabData data);
+
+	@Nullable
+	PortingLibCreativeTab.TabData getPortingTabData();
+}

modules/items/src/main/java/io/github/fabricators_of_create/porting_lib/item/api/itemgroup/PortingLibCreativeTab.java

@@ -0,0 +1,102 @@
+package io.github.fabricators_of_create.porting_lib.item.api.itemgroup;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Stream;
+
+import io.github.fabricators_of_create.porting_lib.item.api.extensions.CreativeModeTabExt;
+import net.minecraft.network.chat.Component;
+import net.minecraft.resources.ResourceKey;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.world.item.CreativeModeTab;
+
+public class PortingLibCreativeTab {
+	public static PortingLibCreativeTabBuilder builder() {
+		return new PortingLibCreativeTabBuilder();
+	}
+
+	public static class PortingLibCreativeTabBuilder extends CreativeModeTab.Builder {
+		public static final ResourceLocation CREATIVE_TABS_LOCATION = new ResourceLocation("textures/gui/container/creative_inventory/tabs.png");
+
+		private boolean hasDisplayName = false;
+		private ResourceLocation tabsImage = CREATIVE_TABS_LOCATION;
+		private int labelColor = 4210752;
+		private int slotColor = -2130706433;
+		private final List<ResourceLocation> tabsBefore = new ArrayList<>();
+		private final List<ResourceLocation> tabsAfter = new ArrayList<>();
+
+		public PortingLibCreativeTabBuilder() {
+			// Set when building.
+			super(null, -1);
+		}
+
+		@Override
+		public PortingLibCreativeTabBuilder title(Component displayName) {
+			hasDisplayName = true;
+			return (PortingLibCreativeTabBuilder) super.title(displayName);
+		}
+
+		@Override
+		public CreativeModeTab build() {
+			if (!hasDisplayName) {
+				throw new IllegalStateException("No display name set for ItemGroup");
+			}
+
+			CreativeModeTab tab = super.build();
+			((CreativeModeTabExt) tab).setPortingData(new TabData(tabsImage, labelColor, slotColor, tabsBefore, tabsAfter));
+			return tab;
+		}
+
+		/**
+		 * Sets the image of the tab to a custom resource location, instead of an item's texture.
+		 */
+		public PortingLibCreativeTabBuilder withTabsImage(ResourceLocation tabsImage) {
+			this.tabsImage = tabsImage;
+			return this;
+		}
+
+		/**
+		 * Sets the color of the tab label.
+		 */
+		public PortingLibCreativeTabBuilder withLabelColor(int labelColor) {
+			this.labelColor = labelColor;
+			return this;
+		}
+
+		/**
+		 * Sets the color of tab's slots.
+		 */
+		public PortingLibCreativeTabBuilder withSlotColor(int slotColor) {
+			this.slotColor = slotColor;
+			return this;
+		}
+
+		/** Define tabs that should come <i>before</i> this tab. This tab will be placed <strong>after</strong> the {@code tabs}. **/
+		public PortingLibCreativeTabBuilder withTabsBefore(ResourceLocation... tabs) {
+			this.tabsBefore.addAll(List.of(tabs));
+			return this;
+		}
+
+		/** Define tabs that should come <i>after</i> this tab. This tab will be placed <strong>before</strong> the {@code tabs}.**/
+		public PortingLibCreativeTabBuilder withTabsAfter(ResourceLocation... tabs) {
+			this.tabsAfter.addAll(List.of(tabs));
+			return this;
+		}
+
+		/** Define tabs that should come <i>before</i> this tab. This tab will be placed <strong>after</strong> the {@code tabs}. **/
+		@SafeVarargs
+		public final PortingLibCreativeTabBuilder withTabsBefore(ResourceKey<CreativeModeTab>... tabs) {
+			Stream.of(tabs).map(ResourceKey::location).forEach(this.tabsBefore::add);
+			return this;
+		}
+
+		/** Define tabs that should come <i>after</i> this tab. This tab will be placed <strong>before</strong> the {@code tabs}.**/
+		@SafeVarargs
+		public final PortingLibCreativeTabBuilder withTabsAfter(ResourceKey<CreativeModeTab>... tabs) {
+			Stream.of(tabs).map(ResourceKey::location).forEach(this.tabsAfter::add);
+			return this;
+		}
+	}
+
+	public record TabData(ResourceLocation tabsImage, int labelColor, int slotColor, List<ResourceLocation> tabsBefore, List<ResourceLocation> tabsAfter) {}
+}

modules/items/src/main/java/io/github/fabricators_of_create/porting_lib/item/impl/mixin/client/CreativeModeInventoryScreenMixin.java

@@ -0,0 +1,35 @@
+package io.github.fabricators_of_create.porting_lib.item.impl.mixin.client;
+
+import io.github.fabricators_of_create.porting_lib.item.api.extensions.CreativeModeTabExt;
+import io.github.fabricators_of_create.porting_lib.item.api.itemgroup.PortingLibCreativeTab;
+import net.minecraft.client.gui.screens.inventory.CreativeModeInventoryScreen;
+
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.world.item.CreativeModeTab;
+
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.ModifyArg;
+
+@Mixin(CreativeModeInventoryScreen.class)
+public class CreativeModeInventoryScreenMixin {
+	@Shadow
+	private static CreativeModeTab selectedTab;
+
+	@ModifyArg(method = "renderLabels", index = 4, at = @At(value = "INVOKE", target = "Lnet/minecraft/client/gui/GuiGraphics;drawString(Lnet/minecraft/client/gui/Font;Lnet/minecraft/network/chat/Component;IIIZ)I"))
+	private int modifyLabelColor(int labelColor) {
+		PortingLibCreativeTab.TabData data = ((CreativeModeTabExt) selectedTab).getPortingTabData();
+		if (data != null)
+			return data.labelColor();
+		return labelColor;
+	}
+
+	@ModifyArg(method = "renderBg", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/gui/GuiGraphics;blit(Lnet/minecraft/resources/ResourceLocation;IIIIII)V", ordinal = 1))
+	private ResourceLocation modifyTabImage(ResourceLocation original) {
+		PortingLibCreativeTab.TabData data = ((CreativeModeTabExt) selectedTab).getPortingTabData();
+		if (data != null)
+			return data.tabsImage();
+		return original;
+	}
+}

modules/items/src/main/java/io/github/fabricators_of_create/porting_lib/item/impl/mixin/common/CreativeModeTabMixin.java

@@ -0,0 +1,25 @@
+package io.github.fabricators_of_create.porting_lib.item.impl.mixin.common;
+
+import javax.annotation.Nullable;
+
+import org.spongepowered.asm.mixin.Mixin;
+
+import io.github.fabricators_of_create.porting_lib.item.api.extensions.CreativeModeTabExt;
+import io.github.fabricators_of_create.porting_lib.item.api.itemgroup.PortingLibCreativeTab;
+import net.minecraft.world.item.CreativeModeTab;
+
+@Mixin(CreativeModeTab.class)
+public class CreativeModeTabMixin implements CreativeModeTabExt {
+	@Nullable
+	private PortingLibCreativeTab.TabData porting$data;
+
+	@Override
+	public void setPortingData(PortingLibCreativeTab.TabData data) {
+		this.porting$data = data;
+	}
+
+	@Override
+	public PortingLibCreativeTab.TabData getPortingTabData() {
+		return this.porting$data;
+	}
+}

modules/items/src/main/resources/porting_lib_items.mixins.json

@@ -10,6 +10,8 @@
     "client.GuiGraphicsMixin"
   ],
   "mixins": [
+    "client.CreativeModeInventoryScreenMixin",
+    "common.CreativeModeTabMixin",
     "common.RepairItemRecipeMixin"
   ]
 }

modules/items/src/testmod/java/io/github/fabricators_of_create/porting_lib/item/testmod/PortingLibItemsTestmod.java

@@ -0,0 +1,44 @@
+package io.github.fabricators_of_create.porting_lib.item.testmod;
+
+import io.github.fabricators_of_create.porting_lib.core.PortingLib;
+import io.github.fabricators_of_create.porting_lib.item.api.itemgroup.PortingLibCreativeTab;
+import net.fabricmc.api.ModInitializer;
+import net.minecraft.core.Registry;
+import net.minecraft.core.registries.BuiltInRegistries;
+import net.minecraft.network.chat.Component;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.world.item.BlockItem;
+import net.minecraft.world.item.HoeItem;
+import net.minecraft.world.level.block.SkullBlock;
+
+public class PortingLibItemsTestmod implements ModInitializer {
+	public static final ResourceLocation TAB1 = PortingLib.id("tab1");
+	public static final ResourceLocation TAB2 = PortingLib.id("tab2");
+	@Override
+	public void onInitialize() {
+		var tab1 = PortingLibCreativeTab.builder()
+				.title(Component.literal("Test tab 1"))
+				.withTabsBefore(TAB2)
+				.withLabelColor(14525)
+				.withSlotColor(2526789)
+				.displayItems((itemDisplayParameters, output) -> {
+					BuiltInRegistries.ITEM.forEach(item -> {
+						if (item instanceof HoeItem)
+							output.accept(item);
+					});
+				})
+				.build();
+		var tab2 = PortingLibCreativeTab.builder()
+				.title(Component.literal("Test tab 2"))
+				.displayItems((itemDisplayParameters, output) -> {
+					BuiltInRegistries.ITEM.forEach(item -> {
+						if (item instanceof BlockItem blockItem && blockItem.getBlock() instanceof SkullBlock)
+							output.accept(item);
+					});
+				})
+				.build();
+
+		Registry.register(BuiltInRegistries.CREATIVE_MODE_TAB, TAB1, tab1);
+		Registry.register(BuiltInRegistries.CREATIVE_MODE_TAB, TAB2, tab2);
+	}
+}

modules/items/src/testmod/resources/fabric.mod.json

@@ -0,0 +1,17 @@
+{
+  "schemaVersion": 1,
+  "id": "porting_lib_items_testmod",
+  "version": "${version}",
+  "name": "Porting Lib Items Testmod",
+  "description": "Tests the items module",
+  "authors": [
+    "The Create Fabric Team"
+  ],
+  "license": "LGPL",
+  "environment": "*",
+  "entrypoints": {
+    "main": [
+      "io.github.fabricators_of_create.porting_lib.item.testmod.PortingLibItemsTestmod"
+    ]
+  }
+}