Fix Phantom Slot JEI highlight when hovering over valid JEI ingredients (#112)

* highlight when hovering over an element

* commit suggestion

Author: ghzdude

src/main/java/com/cleanroommc/modularui/core/mixin/jei/GhostIngredientDragManagerAccessor.java

@@ -10,4 +10,7 @@ public interface GhostIngredientDragManagerAccessor {
 
     @Accessor
     GhostIngredientDrag<?> getGhostIngredientDrag();
+
+    @Accessor
+    Object getHoveredIngredient();
 }

src/main/java/com/cleanroommc/modularui/integration/jei/ModularUIJeiPlugin.java

@@ -36,10 +36,20 @@ public static GhostIngredientDragManager getGhostDragManager() {
         return ((IngredientListOverlayAccessor) runtime.getIngredientListOverlay()).getGhostIngredientDragManager();
     }
 
+    public static boolean hoveringOverIngredient(JeiGhostIngredientSlot<?> ingredientSlot) {
+        Object hovered = getHoverdObject();
+        if (hovered == null) return false;
+        return ingredientSlot.castGhostIngredientIfValid(hovered) != null;
+    }
+
     public static GhostIngredientDrag<?> getGhostDrag() {
         return ((GhostIngredientDragManagerAccessor) getGhostDragManager()).getGhostIngredientDrag();
     }
 
+    public static Object getHoverdObject() {
+        return ((GhostIngredientDragManagerAccessor) getGhostDragManager()).getHoveredIngredient();
+    }
+
     public static boolean hasDraggingGhostIngredient() {
         return getGhostDrag() != null;
     }

src/main/java/com/cleanroommc/modularui/widgets/ItemSlot.java

@@ -90,7 +90,8 @@ public void draw(ModularGuiContext context, WidgetTheme widgetTheme) {
         drawSlot(getSlot());
         RenderHelper.enableStandardItemLighting();
         GlStateManager.disableLighting();
-        if (this.syncHandler.isPhantom() && ModularUI.isJeiLoaded() && ModularUIJeiPlugin.hasDraggingGhostIngredient()) {
+        if (this.syncHandler.isPhantom() && ModularUI.isJeiLoaded() &&
+                (ModularUIJeiPlugin.hasDraggingGhostIngredient() || ModularUIJeiPlugin.hoveringOverIngredient(this))) {
             GlStateManager.colorMask(true, true, true, false);
             drawHighlight(getArea(), isHovering());
             GlStateManager.colorMask(true, true, true, true);