spacing added

src/controls/QskPushButtonSkinlet.cpp

@@ -34,6 +34,8 @@ namespace
         {
             using Q = QskPushButton;
 
+            setSpacing( button->spacingHint( Q::Panel ) );
+
             const auto graphicSourceSize = button->graphic().defaultSize();
 
             const bool hasText = !button->text().isEmpty();

src/layouts/QskSubcontrolLayoutEngine.cpp

@@ -143,6 +143,10 @@ QSizeF QskSubcontrolLayoutEngine::TextElement::implicitSize( const QSizeF& const
     const auto font = skinnable()->effectiveFont( subControl() );
     const auto textOptions = skinnable()->textOptionsHint( subControl() );
 
+#if 0
+    // what about skinnable()->strutSizeHint( subControl() ); ????
+#endif
+
     QSizeF hint;
 
     const qreal lineHeight = QFontMetricsF( font ).height();
@@ -308,6 +312,16 @@ Qt::Orientation QskSubcontrolLayoutEngine::orientation() const
     return m_data->orientation;
 }
 
+void QskSubcontrolLayoutEngine::setSpacing( qreal spacing )
+{
+    Inherited::setSpacing( spacing, Qt::Horizontal | Qt::Vertical );
+}
+
+qreal QskSubcontrolLayoutEngine::spacing() const
+{
+    return Inherited::spacing( m_data->orientation );
+}
+
 void QskSubcontrolLayoutEngine::setElementAt( int index, LayoutElement* element )
 {
     if ( index >= 0 && index < count() )

src/layouts/QskSubcontrolLayoutEngine.h

@@ -22,6 +22,8 @@ class QskSkinnable;
  */
 class QskSubcontrolLayoutEngine : public QskLayoutEngine2D
 {
+    using Inherited = QskLayoutEngine2D;
+
   public:
     class LayoutElement : public QskLayoutElement
     {
@@ -116,6 +118,9 @@ class QskSubcontrolLayoutEngine : public QskLayoutEngine2D
     Qt::Orientation orientation() const;
     bool setOrientation( Qt::Orientation );
 
+    void setSpacing( qreal );
+    qreal spacing() const;
+
     void setElementAt( int index, LayoutElement* );
     LayoutElement* elementAt( int ) const;