Initial popup window.

src/client/TopBar.cpp

@@ -1,10 +1,36 @@
 #include "TopBar.h"
 
 #include "Color.h"
+#include "Theme.h"
+
+#include "Button.h"
+#include "TopBarMenu.h"
 
 TopBar::TopBar()
 {
-    setBackgroundColor(Color(50, 50, 50));
+    setBackgroundColor(Theme::getBackgroundPrimary());
+
+    auto fileButton = Button::Create();
+    fileButton->setLabel("File");
+    fileButton->setBackgroundColor(Theme::getBackgroundPrimary());
+    fileButton->setMargin(2);
+    fileButton->setMaxWidth(60);
+
+    auto onClick = [this](Widget* self){
+                if(this)
+                {
+                    auto menu = std::make_unique<TopBarMenu>();
+                    auto window = getTopLevelWindow();
+                    window->addPopup(std::move(menu));
+                };
+            };
+    fileButton->setOnClickFunction(onClick);
+    addWidget(std::move(fileButton));
+}
+
+TopBar::~TopBar()
+{
+
 }
 
 std::unique_ptr<TopBar> TopBar::Create()