diff --git a/src/common/QskBoxBorderMetrics.cpp b/src/common/QskBoxBorderMetrics.cpp
index 265b244d..c7fd627c 100644
--- a/src/common/QskBoxBorderMetrics.cpp
+++ b/src/common/QskBoxBorderMetrics.cpp
@@ -22,24 +22,12 @@ static inline qreal qskAbsoluted( qreal length, qreal percentage )
     return percentage / 100.0 * 0.5 * length;
 }
 
-QskBoxBorderMetrics::~QskBoxBorderMetrics()
-{
-}
-
-bool QskBoxBorderMetrics::operator==( const QskBoxBorderMetrics& other ) const
-{
-    if ( m_sizeMode != other.m_sizeMode )
-        return false;
-
-    return m_widths == other.m_widths;
-}
-
-void QskBoxBorderMetrics::setSizeMode( Qt::SizeMode sizeMode )
+void QskBoxBorderMetrics::setSizeMode( Qt::SizeMode sizeMode ) noexcept
 {
     m_sizeMode = sizeMode;
 }
 
-void QskBoxBorderMetrics::setWidths( const QskMargins& widths )
+void QskBoxBorderMetrics::setWidths( const QskMargins& widths ) noexcept
 {
     m_widths.setLeft( qMax( widths.left(), 0.0 ) );
     m_widths.setTop( qMax( widths.top(), 0.0 ) );
@@ -47,12 +35,12 @@ void QskBoxBorderMetrics::setWidths( const QskMargins& widths )
     m_widths.setBottom( qMax( widths.bottom(), 0.0 ) );
 }
 
-void QskBoxBorderMetrics::setWidthAt( Qt::Edges edges, qreal width )
+void QskBoxBorderMetrics::setWidthAt( Qt::Edges edges, qreal width ) noexcept
 {
     m_widths.setMarginsAt( edges, qMax( width, 0.0 ) );
 }
 
-QskBoxBorderMetrics QskBoxBorderMetrics::toAbsolute( const QSizeF& size ) const
+QskBoxBorderMetrics QskBoxBorderMetrics::toAbsolute( const QSizeF& size ) const noexcept
 {
     if ( m_sizeMode != Qt::RelativeSize )
         return *this;
@@ -79,7 +67,7 @@ QskBoxBorderMetrics QskBoxBorderMetrics::toAbsolute( const QSizeF& size ) const
 }
 
 QskBoxBorderMetrics QskBoxBorderMetrics::interpolated(
-    const QskBoxBorderMetrics& to, qreal ratio ) const
+    const QskBoxBorderMetrics& to, qreal ratio ) const noexcept
 {
     if ( ( *this == to ) || ( m_sizeMode != to.m_sizeMode ) )
         return to;
@@ -95,7 +83,7 @@ QVariant QskBoxBorderMetrics::interpolate(
     return QVariant::fromValue( from.interpolated( to, progress ) );
 }
 
-uint QskBoxBorderMetrics::hash( uint seed ) const
+uint QskBoxBorderMetrics::hash( uint seed ) const noexcept
 {
     uint hash = qHashBits( &m_widths, sizeof( m_widths ), seed );
 
diff --git a/src/common/QskBoxBorderMetrics.h b/src/common/QskBoxBorderMetrics.h
index f91113ac..f789fc8a 100644
--- a/src/common/QskBoxBorderMetrics.h
+++ b/src/common/QskBoxBorderMetrics.h
@@ -12,45 +12,42 @@
 #include <qnamespace.h>
 #include <qsize.h>
 
-class QDebug;
 class QVariant;
 
 class QSK_EXPORT QskBoxBorderMetrics
 {
   public:
-    constexpr QskBoxBorderMetrics();
+    constexpr QskBoxBorderMetrics() noexcept;
 
     constexpr QskBoxBorderMetrics(
-        qreal width, Qt::SizeMode = Qt::AbsoluteSize );
+        qreal width, Qt::SizeMode = Qt::AbsoluteSize ) noexcept;
 
     constexpr QskBoxBorderMetrics( qreal left, qreal top,
-        qreal right, qreal bottom, Qt::SizeMode = Qt::AbsoluteSize );
+        qreal right, qreal bottom, Qt::SizeMode = Qt::AbsoluteSize ) noexcept;
 
-    constexpr QskBoxBorderMetrics(
-        const QskMargins& widths, Qt::SizeMode sizeMode = Qt::AbsoluteSize );
+    constexpr QskBoxBorderMetrics( const QskMargins& widths,
+        Qt::SizeMode sizeMode = Qt::AbsoluteSize ) noexcept;
 
-    ~QskBoxBorderMetrics();
+    constexpr bool operator==( const QskBoxBorderMetrics& ) const noexcept;
+    constexpr bool operator!=( const QskBoxBorderMetrics& ) const noexcept;
 
-    bool operator==( const QskBoxBorderMetrics& ) const;
-    bool operator!=( const QskBoxBorderMetrics& ) const;
+    constexpr bool isNull() const noexcept;
 
-    bool isNull() const;
+    void setWidthAt( Qt::Edges, qreal width ) noexcept;
+    qreal widthAt( Qt::Edge ) const noexcept;
 
-    void setWidthAt( Qt::Edges, qreal width );
-    qreal widthAt( Qt::Edge ) const;
+    void setWidths( const QskMargins& ) noexcept;
+    constexpr const QskMargins& widths() const noexcept;
 
-    void setWidths( const QskMargins& );
-    const QskMargins& widths() const;
-
-    void setSizeMode( Qt::SizeMode );
-    Qt::SizeMode sizeMode() const;
+    void setSizeMode( Qt::SizeMode ) noexcept;
+    constexpr Qt::SizeMode sizeMode() const noexcept;
 
     QskBoxBorderMetrics interpolated(
-        const QskBoxBorderMetrics&, qreal value ) const;
+        const QskBoxBorderMetrics&, qreal value ) const noexcept;
 
-    QskBoxBorderMetrics toAbsolute( const QSizeF& ) const;
+    QskBoxBorderMetrics toAbsolute( const QSizeF& ) const noexcept;
 
-    uint hash( uint seed = 0 ) const;
+    uint hash( uint seed = 0 ) const noexcept;
 
     static QVariant interpolate( const QskBoxBorderMetrics&,
         const QskBoxBorderMetrics&, qreal progress );
@@ -60,59 +57,67 @@ class QSK_EXPORT QskBoxBorderMetrics
     Qt::SizeMode m_sizeMode : 2;
 };
 
-inline constexpr QskBoxBorderMetrics::QskBoxBorderMetrics()
+inline constexpr QskBoxBorderMetrics::QskBoxBorderMetrics() noexcept
     : m_sizeMode( Qt::AbsoluteSize )
 {
 }
 
 inline constexpr QskBoxBorderMetrics::QskBoxBorderMetrics(
-        qreal width, Qt::SizeMode sizeMode )
+        qreal width, Qt::SizeMode sizeMode ) noexcept
     : m_widths( width )
     , m_sizeMode( sizeMode )
 {
 }
 
 inline constexpr QskBoxBorderMetrics::QskBoxBorderMetrics(
-        const QskMargins& widths, Qt::SizeMode sizeMode )
+        const QskMargins& widths, Qt::SizeMode sizeMode ) noexcept
     : m_widths( widths )
     , m_sizeMode( sizeMode )
 {
 }
 
 inline constexpr QskBoxBorderMetrics::QskBoxBorderMetrics(
-        qreal left, qreal top, qreal right, qreal bottom, Qt::SizeMode sizeMode )
+        qreal left, qreal top, qreal right, qreal bottom, Qt::SizeMode sizeMode ) noexcept
     : m_widths( left, top, right, bottom )
     , m_sizeMode( sizeMode )
 {
 }
 
-inline bool QskBoxBorderMetrics::operator!=( const QskBoxBorderMetrics& other ) const
+inline constexpr bool QskBoxBorderMetrics::operator==(
+    const QskBoxBorderMetrics& other ) const noexcept
+{
+    return ( m_sizeMode == other.m_sizeMode ) && ( m_widths == other.m_widths );
+}
+
+inline constexpr bool QskBoxBorderMetrics::operator!=(
+    const QskBoxBorderMetrics& other ) const noexcept
 {
     return !( *this == other );
 }
 
-inline bool QskBoxBorderMetrics::isNull() const
+inline constexpr bool QskBoxBorderMetrics::isNull() const noexcept
 {
     return m_widths.isNull();
 }
 
-inline const QskMargins& QskBoxBorderMetrics::widths() const
+inline constexpr const QskMargins& QskBoxBorderMetrics::widths() const noexcept
 {
     return m_widths;
 }
 
-inline qreal QskBoxBorderMetrics::widthAt( Qt::Edge edge ) const
+inline qreal QskBoxBorderMetrics::widthAt( Qt::Edge edge ) const noexcept
 {
     return m_widths.marginAt( edge );
 }
 
-inline Qt::SizeMode QskBoxBorderMetrics::sizeMode() const
+inline constexpr Qt::SizeMode QskBoxBorderMetrics::sizeMode() const noexcept
 {
     return m_sizeMode;
 }
 
 #ifndef QT_NO_DEBUG_STREAM
 
+class QDebug;
 QSK_EXPORT QDebug operator<<( QDebug, const QskBoxBorderMetrics& );
 
 #endif