easter: improve easter egg

Source/sys-clk/overlay/src/ui/gui/ult_ext.h

@@ -22,12 +22,19 @@ class ImageElement : public tsl::elm::ListItem {
 private:
     const uint8_t* imgData;
     uint32_t imgWidth, imgHeight;
+    bool visible;
     
 public:
     ImageElement(const uint8_t* data, uint32_t w, uint32_t h) 
-        : tsl::elm::ListItem(""), imgData(data), imgWidth(w), imgHeight(h) {}
+        : tsl::elm::ListItem(""), imgData(data), imgWidth(w), imgHeight(h), visible(true) {}
+    
+    void setVisible(bool v) {
+        visible = v;
+    }
     
     virtual void draw(tsl::gfx::Renderer *renderer) override {
+        if (!visible) return;
+        
         // Draw image centered horizontally
         u16 centerX = this->getX() + (this->getWidth() - imgWidth) / 2;
         renderer->drawBitmap(
@@ -39,6 +46,16 @@ public:
         );
     }
     
+    virtual void layout(u16 parentX, u16 parentY, u16 parentWidth, u16 parentHeight) override {
+        if (!visible) {
+            // Take up no space when hidden
+            this->setBoundaries(parentX, parentY, 0, 0);
+        } else {
+            // Normal layout when visible
+            tsl::elm::ListItem::layout(parentX, parentY, parentWidth, parentHeight);
+        }
+    }
+    
     virtual void drawHighlight(tsl::gfx::Renderer *renderer) override {
         // Do nothing - no highlight
     }
@@ -48,6 +65,62 @@ public:
     }
     
     virtual Element* requestFocus(Element *oldFocus, tsl::FocusDirection direction) override {
-        return nullptr; // Make it non-focusable so it can't be selected
+        return nullptr; // Make it non-focusable
+    }
+};
+
+class HideableCategoryHeader : public tsl::elm::CategoryHeader {
+private:
+    bool visible;
+    
+public:
+    HideableCategoryHeader(const std::string& title) 
+        : tsl::elm::CategoryHeader(title), visible(true) {}
+    
+    void setVisible(bool v) {
+        visible = v;
+    }
+    
+    virtual void draw(tsl::gfx::Renderer *renderer) override {
+        if (!visible) return;
+        tsl::elm::CategoryHeader::draw(renderer);
+    }
+    
+    virtual void layout(u16 parentX, u16 parentY, u16 parentWidth, u16 parentHeight) override {
+        if (!visible) {
+            this->setBoundaries(parentX, parentY, 0, 0);
+        } else {
+            tsl::elm::CategoryHeader::layout(parentX, parentY, parentWidth, parentHeight);
+        }
+    }
+};
+
+class HideableCustomDrawer : public tsl::elm::Element {
+private:
+    bool visible;
+    u32 height;
+    
+public:
+    HideableCustomDrawer(u32 h)
+        : Element(), visible(true), height(h) {}
+    
+    void setVisible(bool v) {
+        visible = v;
+    }
+    
+    virtual void draw(tsl::gfx::Renderer *renderer) override {
+        // Empty drawer - just for spacing
+    }
+    
+    virtual void layout(u16 parentX, u16 parentY, u16 parentWidth, u16 parentHeight) override {
+        if (!visible) {
+            this->setBoundaries(parentX, parentY, 0, 0);
+        } else {
+            this->setBoundaries(parentX, parentY, parentWidth, height);
+        }
+    }
+    
+    virtual Element* requestFocus(Element *oldFocus, tsl::FocusDirection direction) override {
+        return nullptr;
     }
 };