chore: remove title bar example

Co-authored-by: Pascal Precht <pascal.precht@gmail.com>

ui/StatusQ/sandbox/sandbox.pro

@@ -11,6 +11,9 @@ SOURCES += \
         main.cpp \
         sandboxapp.cpp
 
+OBJECTIVE_SOURCES += \
+        sandboxapp_mac.mm
+
 RESOURCES += qml.qrc
 
 DESTDIR = $$PWD/bin

ui/StatusQ/sandbox/sandboxapp.cpp

@@ -1,7 +1,7 @@
 #include "sandboxapp.h"
 
 #include <QQmlContext>
-
+#include <QWindow>
 #include <QDebug>
 
 SandboxApp::SandboxApp(int &argc, char **argv)
@@ -25,12 +25,23 @@ void SandboxApp::startEngine()
                 QCoreApplication::exit(-1);
         }, Qt::QueuedConnection);
     m_engine.load(url);
+
+    QWindow *rootWindow = qobject_cast<QWindow*>(m_engine.rootObjects().at(0));
+    if (rootWindow) {
+        removeTitleBar(rootWindow->winId());
+    } else {
+        qDebug() << "Window doesn't exist";
+    }
 }
 
 void SandboxApp::restartEngine()
 {
     const QUrl url(applicationDirPath() + "/../main.qml");
-    m_engine.rootObjects().at(0)->deleteLater();
+    QWindow *rootWindow = qobject_cast<QWindow*>(m_engine.rootObjects().at(0));
+    if (rootWindow) {
+
+        rootWindow->close();
+    }
     m_engine.clearComponentCache();
     m_engine.load(url);
 }

ui/StatusQ/sandbox/sandboxapp.h

@@ -13,6 +13,8 @@ public:
 
     void startEngine();
 
+    void removeTitleBar(WId wid);
+
 public slots:
     void restartEngine();
 

ui/StatusQ/sandbox/sandboxapp_mac.mm

@@ -0,0 +1,18 @@
+#include "sandboxapp.h"
+
+#include <QColor>
+
+#include <Foundation/Foundation.h>
+#include <AppKit/NSView.h>
+#include <AppKit/NSWindow.h>
+#include <AppKit/NSColor.h>
+
+void SandboxApp::removeTitleBar(WId wid)
+{
+    NSView *nsView = reinterpret_cast<NSView*>(wid);
+    NSWindow *window = [nsView window];
+
+    window.titlebarAppearsTransparent = true;
+    window.titleVisibility = NSWindowTitleHidden;
+    window.styleMask |= NSWindowStyleMaskFullSizeContentView;
+}

ui/StatusQ/src/StatusQ/Core/Theme/Theme.qml

@@ -4,6 +4,9 @@ import QtQuick 2.13
 
 QtObject {
     id: appTheme
+    // Replace it with:
+    //      property QtObject palette: StatusLightTheme {}
+    // for reloading
     property ThemePalette palette: StatusLightTheme {}
 
     function setTheme(theme) {