AbstractShapelessRecipeWrapper.java

package mezz.jei.plugins.vanilla.crafting;

import mezz.jei.api.IGuiHelper;
import mezz.jei.api.gui.IDrawable;
import mezz.jei.api.recipe.wrapper.ICraftingRecipeWrapper;
import mezz.jei.config.Constants;
import mezz.jei.plugins.vanilla.VanillaRecipeWrapper;
import mezz.jei.util.Translator;
import net.minecraft.client.Minecraft;
import net.minecraft.client.renderer.GlStateManager;
import net.minecraft.util.ResourceLocation;
import net.minecraftforge.fml.client.config.HoverChecker;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import java.util.Collections;
import java.util.List;

public abstract class AbstractShapelessRecipeWrapper extends VanillaRecipeWrapper implements ICraftingRecipeWrapper {
	private static final double shapelessIconScale = 0.5;
	@Nonnull
	private final IDrawable shapelessIcon;
	@Nonnull
	private final HoverChecker shapelessIconHoverChecker;

	public AbstractShapelessRecipeWrapper(IGuiHelper guiHelper) {
		ResourceLocation shapelessIconLocation = new ResourceLocation(Constants.RESOURCE_DOMAIN, Constants.TEXTURE_GUI_PATH + "recipeBackground.png");
		shapelessIcon = guiHelper.createDrawable(shapelessIconLocation, 196, 0, 19, 15);

		int iconBottom = (int) (shapelessIcon.getHeight() * shapelessIconScale);
		int iconLeft = CraftingRecipeCategory.width - (int) (shapelessIcon.getWidth() * shapelessIconScale);
		int iconRight = iconLeft + (int) (shapelessIcon.getWidth() * shapelessIconScale);
		shapelessIconHoverChecker = new HoverChecker(0, iconBottom, iconLeft, iconRight, 0);
	}

	@Override
	public void drawInfo(@Nonnull Minecraft minecraft, int recipeWidth, int recipeHeight, int mouseX, int mouseY) {
		super.drawInfo(minecraft, recipeWidth, recipeHeight, mouseX, mouseY);

		if (hasMultipleIngredients()) {
			int shapelessIconX = recipeWidth - (int) (shapelessIcon.getWidth() * shapelessIconScale);

			GlStateManager.pushMatrix();
			GlStateManager.scale(shapelessIconScale, shapelessIconScale, 1.0);
			GlStateManager.color(1f, 1f, 1f, 1f);
			shapelessIcon.draw(minecraft, (int) (shapelessIconX / shapelessIconScale), 0);
			GlStateManager.popMatrix();
		}
	}

	@Nullable
	@Override
	public List<String> getTooltipStrings(int mouseX, int mouseY) {
		if (hasMultipleIngredients() && shapelessIconHoverChecker.checkHover(mouseX, mouseY)) {
			return Collections.singletonList(Translator.translateToLocal("jei.tooltip.shapeless.recipe"));
		}

		return super.getTooltipStrings(mouseX, mouseY);
	}

	private boolean hasMultipleIngredients() {
		return getInputs().size() > 1;
	}
}