even more JEI integration

get ingredient from the crafting calculation GUIs

src/main/java/appeng/client/gui/AEGuiHandler.java

@@ -0,0 +1,97 @@
+package appeng.client.gui;
+
+import javax.annotation.Nullable;
+import appeng.api.storage.data.IAEItemStack;
+import appeng.client.gui.implementations.GuiCraftAmount;
+import appeng.client.gui.implementations.GuiCraftConfirm;
+import appeng.client.gui.implementations.GuiCraftingCPU;
+import appeng.client.gui.widgets.GuiCustomSlot;
+import appeng.container.implementations.ContainerCraftAmount;
+import mezz.jei.api.gui.IAdvancedGuiHandler;
+import net.minecraft.client.renderer.RenderItem;
+import net.minecraft.inventory.Slot;
+import net.minecraft.item.ItemStack;
+
+import java.awt.*;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+
+
+public class AEGuiHandler implements IAdvancedGuiHandler<AEBaseGui>
+{
+
+    @Override
+    public Class<AEBaseGui> getGuiContainerClass()
+    {
+        return AEBaseGui.class;
+    }
+
+    @Nullable
+    @Override
+    public List<Rectangle> getGuiExtraAreas( AEBaseGui guiContainer )
+    {
+        return Collections.emptyList();
+    }
+
+    @Nullable
+    @Override
+    public Object getIngredientUnderMouse( AEBaseGui guiContainer, int mouseX, int mouseY )
+    {
+        List<IAEItemStack> visual = new ArrayList<>();
+        int guiSlotIdx = 0;
+        Object result = null;
+        if( guiContainer instanceof GuiCraftConfirm )
+        {
+            guiSlotIdx = getSlotidx( guiContainer, mouseX, mouseY, ( (GuiCraftConfirm) guiContainer ).getDisplayedRows() );
+            visual = ( (GuiCraftConfirm) guiContainer ).getVisual();
+            if( guiSlotIdx < visual.size() && guiSlotIdx != -1 )
+            {
+                result = visual.get( guiSlotIdx ).getDefinition();
+            }
+            else
+            {
+                return null;
+            }
+        }
+
+        if( guiContainer instanceof GuiCraftingCPU )
+        {
+            guiSlotIdx = getSlotidx( guiContainer, mouseX, mouseY, ( (GuiCraftingCPU) guiContainer ).getDisplayedRows() );
+            visual = ( (GuiCraftingCPU) guiContainer ).getVisual();
+            if( guiSlotIdx < visual.size() && guiSlotIdx != -1 )
+            {
+                result = visual.get( guiSlotIdx ).getDefinition();
+            }
+            else
+            {
+                return null;
+            }
+        }
+        
+        if( guiContainer instanceof GuiCraftAmount )
+        {
+            if( guiContainer.getSlotUnderMouse() != null )
+            {
+                result = guiContainer.getSlotUnderMouse().getStack();
+            }
+        }
+        return result;
+    }
+
+    private int getSlotidx(AEBaseGui guiContainer, int mouseX, int mouseY, int rows)
+    {
+        int guileft = guiContainer.getGuiLeft();
+        int guitop = guiContainer.getGuiTop();
+        int currentScroll = guiContainer.getScrollBar().getCurrentScroll();
+        final int xo = 9;
+        final int yo = 19;
+
+        int guiSlotx = ( mouseX - guileft - xo ) / 67;
+        if( guiSlotx > 2 || mouseX < guileft + xo ) return -1;
+        int guiSloty = ( mouseY - guitop - yo ) / 23;
+        if( guiSloty > ( rows - 1 ) || mouseY < guitop + yo ) return -1;
+        return ( guiSloty * 3 ) + guiSlotx + ( currentScroll * 3 );
+    }
+}

src/main/java/appeng/client/gui/implementations/GuiCraftConfirm.java

@@ -582,4 +582,14 @@ public class GuiCraftConfirm extends AEBaseGui
 			}
 		}
 	}
+
+	public List<IAEItemStack> getVisual()
+	{
+		return visual;
+	}
+
+	public int getDisplayedRows()
+	{
+		return this.rows;
+	}
 }

src/main/java/appeng/client/gui/implementations/GuiCraftingCPU.java

@@ -493,4 +493,14 @@ public class GuiCraftingCPU extends AEBaseGui implements ISortSource
 	{
 		return ViewItems.ALL;
 	}
+
+	public List<IAEItemStack> getVisual()
+	{
+		return visual;
+	}
+
+	public int getDisplayedRows()
+	{
+		return DISPLAYED_ROWS;
+	}
 }

src/main/java/appeng/container/implementations/ContainerCraftAmount.java

@@ -51,6 +51,12 @@ public class ContainerCraftAmount extends AEBaseContainer
 		this.addSlotToContainer( this.getCraftingItem() );
 	}
 
+	@Override
+	public Slot getSlot( int slotId )
+	{
+		return super.getSlot( 0 );
+	}
+
 	@Override
 	public void detectAndSendChanges()
 	{

src/main/java/appeng/integration/modules/jei/JEIPlugin.java

@@ -23,6 +23,7 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.Optional;
 
+import appeng.client.gui.AEGuiHandler;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.Lists;
 
@@ -93,6 +94,9 @@ public class JEIPlugin implements IModPlugin
 		registry.getRecipeTransferRegistry()
 				.addRecipeTransferHandler( new RecipeTransferHandler<>( ContainerPatternTerm.class ),
 						Constants.UNIVERSAL_RECIPE_TRANSFER_UID );
+
+		AEGuiHandler aeGuiHandler = new AEGuiHandler();
+		registry.addAdvancedGuiHandlers(aeGuiHandler);
 	}
 
 	private void registerDescriptions( IDefinitions definitions, IModRegistry registry )