making the panel optional

src/controls/QskBox.cpp

@@ -8,7 +8,13 @@
 QSK_SUBCONTROL( QskBox, Panel )
 
 QskBox::QskBox( QQuickItem* parent )
+    : QskBox( true, parent )
+{
+}
+
+QskBox::QskBox( bool hasPanel, QQuickItem* parent )
     : Inherited( parent )
+    , m_hasPanel( hasPanel )
 {
 }
 
@@ -16,13 +22,36 @@ QskBox::~QskBox()
 {
 }
 
+void QskBox::setPanel( bool on )
+{
+    if ( on != m_hasPanel )
+    {
+        m_hasPanel = on;
+
+        resetImplicitSize();
+        polish();
+        update();
+    }
+}
+
+bool QskBox::hasPanel() const
+{
+    return m_hasPanel;
+}
+
 QRectF QskBox::layoutRectForSize( const QSizeF& size ) const
 {
+    if ( !m_hasPanel )
+        return Inherited::layoutRectForSize( size );
+
     return innerBox( Panel, subControlRect( size, Panel ) );
 }
 
 QSizeF QskBox::contentsSizeHint() const
 {
+    if ( !m_hasPanel )
+        return Inherited::contentsSizeHint();
+
     QSizeF size( -1, -1 );
 
     if ( autoLayoutChildren() )

src/controls/QskBox.h

@@ -14,14 +14,28 @@ class QSK_EXPORT QskBox : public QskControl
 
     using Inherited = QskControl;
 
+    Q_PROPERTY( bool panel READ hasPanel
+        WRITE setPanel NOTIFY panelChanged FINAL )
+
   public:
     QSK_SUBCONTROLS( Panel )
 
     QskBox( QQuickItem* parent = nullptr );
+    QskBox( bool hasPanel, QQuickItem* parent = nullptr );
+
     ~QskBox() override;
 
+    void setPanel( bool );
+    bool hasPanel() const;
+    
     QRectF layoutRectForSize( const QSizeF& ) const override;
     QSizeF contentsSizeHint() const override;
+
+  Q_SIGNALS:
+    void panelChanged( bool );
+
+  private:
+    bool m_hasPanel;
 };
 
 #endif

src/controls/QskBoxSkinlet.cpp

@@ -30,10 +30,15 @@ QRectF QskBoxSkinlet::subControlRect( const QskSkinnable* skinnable,
 QSGNode* QskBoxSkinlet::updateSubNode(
     const QskSkinnable* skinnable, quint8 nodeRole, QSGNode* node ) const
 {
+    const auto box = static_cast< const QskBox* >( skinnable );
+
     switch ( nodeRole )
     {
         case PanelRole:
         {
+            if ( !box->hasPanel() )
+                return nullptr;
+
             return updateBoxNode( skinnable, node, QskBox::Panel );
         }
     }