LcdSpinBox: added displayOffset property

The new displayOffset property is an offset which is always added to the
value of model so we can display values in a user-friendly way if they
internally start at 0.

include/lcd_spinbox.h

@@ -46,6 +46,19 @@ public:
 		update();
 	}
 
+	/*! Sets an offset which is always added to value of model so we can
+	    display values in a user-friendly way if they internally start at 0 */
+	void setDisplayOffset( int offset )
+	{
+		m_displayOffset = offset;
+	}
+
+	/*! \brief Returns internal offset for displaying values */
+	int displayOffset() const
+	{
+		return m_displayOffset;
+	}
+
 
 public slots:
 	virtual void update();
@@ -60,6 +73,7 @@ protected:
 
 private:
 	QPoint m_origMousePos;
+	int m_displayOffset;
 
 
 signals:

src/gui/widgets/lcd_spinbox.cpp

@@ -43,7 +43,8 @@
 lcdSpinBox::lcdSpinBox( int numDigits, QWidget* parent, const QString& name ) :
 	LcdWidget( numDigits, parent, name ),
 	IntModelView( new IntModel( 0, 0, 0, NULL, name, true ), this ),
-	m_origMousePos()
+	m_origMousePos(),
+	m_displayOffset( 0 )
 {
 }
 
@@ -53,7 +54,8 @@ lcdSpinBox::lcdSpinBox( int numDigits, QWidget* parent, const QString& name ) :
 lcdSpinBox::lcdSpinBox( int numDigits, const QString& style, QWidget* parent, const QString& name ) :
 	LcdWidget( numDigits, parent, name ),
 	IntModelView( new IntModel( 0, 0, 0, NULL, name, true ), this ),
-	m_origMousePos()
+	m_origMousePos(),
+	m_displayOffset( 0 )
 {
 }
 
@@ -67,7 +69,7 @@ lcdSpinBox::~lcdSpinBox()
 
 void lcdSpinBox::update()
 {
-	setValue( model()->value() );
+	setValue( model()->value() + m_displayOffset );
 
 	QWidget::update();
 }