Fix NEI item tooltip being drawn through popup panel (#82)

Author: miozune

src/main/java/com/gtnewhorizons/modularui/common/internal/wrapper/ModularGui.java

@@ -147,7 +147,7 @@ public void drawScreen(int mouseX, int mouseY, float partialTicks) {
                 drawHandler.postRenderObjects(this, mouseX, mouseY);
             }
 
-            if (!shouldRenderOurTooltip() && GuiContainerManager.getManager() != null) {
+            if (!shouldRenderOurTooltip() && shouldRenderNEITooltip() && GuiContainerManager.getManager() != null) {
                 GuiContainerManager.getManager().renderToolTips(mouseX, mouseY);
             }
         }
@@ -332,6 +332,13 @@ protected boolean shouldRenderOurTooltip() {
         return context.getCursor().getHovered() != null;
     }
 
+    protected boolean shouldRenderNEITooltip() {
+        Slot slot = GuiContainerManager.getSlotMouseOver(this);
+        // NEI will see slots through popup panel, so block them.
+        // Other than this case, any element in NEI can have tooltip.
+        return !(slot instanceof BaseSlot);
+    }
+
     public void drawDebugScreen() {
         Size screenSize = context.getScaledScreenSize();
         int neiYOffset = shouldShowNEI() ? 20 : 0;