diff --git a/doc/api_break.dox b/doc/api_break.dox
index fccdca2c69f..8c45436b9bf 100644
--- a/doc/api_break.dox
+++ b/doc/api_break.dox
@@ -610,6 +610,13 @@ QgsComposerObject::dataDefinedProperty instead.
 QgsComposerObject::setDataDefinedProperty() instead.
 - updatePictureExpression() was removed.
 
+QgsComposerScaleBar        {#qgis_api_break_3_0_QgsComposerScaleBar}
+-------------------
+
+- setBrush() was removed. Use setFillColor() instead.
+- setBrush2() was removed. Use setFillColor2() instead.
+- setPen() was removed. Use setLineColor() and setLineWidth() instead.
+
 
 QgsComposerTable        {#qgis_api_break_3_0_QgsComposerTable}
 ----------------
diff --git a/python/core/composer/qgscomposerscalebar.sip b/python/core/composer/qgscomposerscalebar.sip
index 7cff2addd36..c4109f1fd8b 100644
--- a/python/core/composer/qgscomposerscalebar.sip
+++ b/python/core/composer/qgscomposerscalebar.sip
@@ -134,6 +134,58 @@ class QgsComposerScaleBar: QgsComposerItem
      */
     void setFontColor( const QColor& c );
 
+    /** Returns the color used for fills in the scalebar.
+     * @see setFillColor()
+     * @see fillColor2()
+     * @note added in QGIS 3.0
+     */
+    QColor fillColor() const;
+
+    /** Sets the color used for fills in the scalebar.
+     * @see fillColor()
+     * @see setFillColor2()
+     * @note added in QGIS 3.0
+     */
+    void setFillColor( const QColor& color );
+
+    /** Returns the secondary color used for fills in the scalebar.
+     * @see setFillColor2()
+     * @see fillColor()
+     * @note added in QGIS 3.0
+     */
+    QColor fillColor2() const;
+
+    /** Sets the secondary color used for fills in the scalebar.
+     * @see fillColor2()
+     * @see setFillColor2()
+     * @note added in QGIS 3.0
+     */
+    void setFillColor2( const QColor& color );
+
+    /** Returns the color used for lines in the scalebar.
+     * @see setLineColor()
+     * @note added in QGIS 3.0
+     */
+    QColor lineColor() const;
+
+    /** Sets the color used for lines in the scalebar.
+     * @see lineColor()
+     * @note added in QGIS 3.0
+     */
+    void setLineColor( const QColor& color );
+
+    /** Returns the line width in millimeters for lines in the scalebar.
+     * @see setLineWidth()
+     * @note added in QGIS 3.0
+     */
+    double lineWidth() const;
+
+    /** Sets the line width in millimeters for lines in the scalebar.
+     * @see lineWidth()
+     * @note added in QGIS 3.0
+     */
+    void setLineWidth( double width );
+
     /** Returns the pen used for drawing the scalebar.
      * @returns QPen used for drawing the scalebar outlines.
      * @see setPen
@@ -141,13 +193,6 @@ class QgsComposerScaleBar: QgsComposerItem
      */
     QPen pen() const;
 
-    /** Sets the pen used for drawing the scalebar.
-     * @param pen QPen to use for drawing the scalebar outlines.
-     * @see pen
-     * @see setBrush
-     */
-    void setPen( const QPen& pen );
-
     /** Returns the primary brush for the scalebar.
      * @returns QBrush used for filling the scalebar
      * @see setBrush
@@ -156,14 +201,6 @@ class QgsComposerScaleBar: QgsComposerItem
      */
     QBrush brush() const;
 
-    /** Sets primary brush for the scalebar.
-     * @param brush QBrush to use for filling the scalebar
-     * @see brush
-     * @see setBrush2
-     * @see setPen
-     */
-    void setBrush( const QBrush& brush );
-
     /** Returns the secondary brush for the scalebar. This is used for alternating color style scalebars, such
      * as single and double box styles.
      * @returns QBrush used for secondary color areas
@@ -172,14 +209,6 @@ class QgsComposerScaleBar: QgsComposerItem
      */
     QBrush brush2() const;
 
-    /** Sets secondary brush for the scalebar. This is used for alternating color style scalebars, such
-     * as single and double box styles.
-     * @param brush QBrush to use for secondary color areas
-     * @see brush2
-     * @see setBrush
-     */
-    void setBrush2( const QBrush& brush );
-
     double height() const;
     void setHeight( double h );
 
diff --git a/src/app/composer/qgscomposerscalebarwidget.cpp b/src/app/composer/qgscomposerscalebarwidget.cpp
index d205b041bd3..39bd117580a 100644
--- a/src/app/composer/qgscomposerscalebarwidget.cpp
+++ b/src/app/composer/qgscomposerscalebarwidget.cpp
@@ -91,6 +91,15 @@ QgsComposerScaleBarWidget::QgsComposerScaleBarWidget( QgsComposerScaleBar* scale
 
   connect( mMapItemComboBox, SIGNAL( itemChanged( QgsComposerItem* ) ), this, SLOT( composerMapChanged( QgsComposerItem* ) ) );
 
+  registerDataDefinedButton( mFillColorDDBtn, QgsComposerObject::ScalebarFillColor,
+                             QgsDataDefinedButtonV2::AnyType, QgsDataDefinedButtonV2::colorAlphaDesc() );
+  registerDataDefinedButton( mFillColor2DDBtn, QgsComposerObject::ScalebarFillColor2,
+                             QgsDataDefinedButtonV2::AnyType, QgsDataDefinedButtonV2::colorAlphaDesc() );
+  registerDataDefinedButton( mLineColorDDBtn, QgsComposerObject::ScalebarLineColor,
+                             QgsDataDefinedButtonV2::AnyType, QgsDataDefinedButtonV2::colorAlphaDesc() );
+  registerDataDefinedButton( mLineWidthDDBtn, QgsComposerObject::ScalebarLineWidth,
+                             QgsDataDefinedButtonV2::AnyType, QgsDataDefinedButtonV2::doublePosDesc() );
+
   blockMemberSignals( false );
   setGuiElements(); //set the GUI elements to the state of scaleBar
 }
@@ -111,7 +120,7 @@ void QgsComposerScaleBarWidget::setGuiElements()
   mNumberOfSegmentsSpinBox->setValue( mComposerScaleBar->numSegments() );
   mSegmentsLeftSpinBox->setValue( mComposerScaleBar->numSegmentsLeft() );
   mSegmentSizeSpinBox->setValue( mComposerScaleBar->numUnitsPerSegment() );
-  mLineWidthSpinBox->setValue( mComposerScaleBar->pen().widthF() );
+  mLineWidthSpinBox->setValue( mComposerScaleBar->lineWidth() );
   mHeightSpinBox->setValue( mComposerScaleBar->height() );
   mMapUnitsPerBarUnitSpinBox->setValue( mComposerScaleBar->numMapUnitsPerScaleBarUnit() );
   mLabelBarSpaceSpinBox->setValue( mComposerScaleBar->labelBarSpace() );
@@ -120,9 +129,9 @@ void QgsComposerScaleBarWidget::setGuiElements()
   mLineJoinStyleCombo->setPenJoinStyle( mComposerScaleBar->lineJoinStyle() );
   mLineCapStyleCombo->setPenCapStyle( mComposerScaleBar->lineCapStyle() );
   mFontColorButton->setColor( mComposerScaleBar->fontColor() );
-  mFillColorButton->setColor( mComposerScaleBar->brush().color() );
-  mFillColor2Button->setColor( mComposerScaleBar->brush2().color() );
-  mStrokeColorButton->setColor( mComposerScaleBar->pen().color() );
+  mFillColorButton->setColor( mComposerScaleBar->fillColor() );
+  mFillColor2Button->setColor( mComposerScaleBar->fillColor2() );
+  mStrokeColorButton->setColor( mComposerScaleBar->lineColor() );
 
   //map combo box
   mMapItemComboBox->setItem( mComposerScaleBar->composerMap() );
@@ -154,7 +163,10 @@ void QgsComposerScaleBarWidget::setGuiElements()
   }
   mMinWidthSpinBox->setValue( mComposerScaleBar->minBarWidth() );
   mMaxWidthSpinBox->setValue( mComposerScaleBar->maxBarWidth() );
-
+  updateDataDefinedButton( mFillColorDDBtn );
+  updateDataDefinedButton( mFillColor2DDBtn );
+  updateDataDefinedButton( mLineColorDDBtn );
+  updateDataDefinedButton( mLineWidthDDBtn );
   blockMemberSignals( false );
 }
 
@@ -169,9 +181,7 @@ void QgsComposerScaleBarWidget::on_mLineWidthSpinBox_valueChanged( double d )
 
   mComposerScaleBar->beginCommand( tr( "Scalebar line width" ), QgsComposerMergeCommand::ScaleBarLineWidth );
   disconnectUpdateSignal();
-  QPen newPen = mComposerScaleBar->pen();
-  newPen.setWidthF( d );
-  mComposerScaleBar->setPen( newPen );
+  mComposerScaleBar->setLineWidth( d );
   mComposerScaleBar->update();
   connectUpdateSignal();
   mComposerScaleBar->endCommand();
@@ -280,9 +290,7 @@ void QgsComposerScaleBarWidget::on_mFillColorButton_colorChanged( const QColor&
 
   mComposerScaleBar->beginCommand( tr( "Scalebar color changed" ), QgsComposerMergeCommand::ScaleBarFillColor );
   disconnectUpdateSignal();
-  QBrush newBrush = mComposerScaleBar->brush();
-  newBrush.setColor( newColor );
-  mComposerScaleBar->setBrush( newBrush );
+  mComposerScaleBar->setFillColor( newColor );
   mComposerScaleBar->update();
   connectUpdateSignal();
   mComposerScaleBar->endCommand();
@@ -297,9 +305,7 @@ void QgsComposerScaleBarWidget::on_mFillColor2Button_colorChanged( const QColor
 
   mComposerScaleBar->beginCommand( tr( "Scalebar secondary color changed" ), QgsComposerMergeCommand::ScaleBarFill2Color );
   disconnectUpdateSignal();
-  QBrush newBrush = mComposerScaleBar->brush2();
-  newBrush.setColor( newColor );
-  mComposerScaleBar->setBrush2( newBrush );
+  mComposerScaleBar->setFillColor2( newColor );
   mComposerScaleBar->update();
   connectUpdateSignal();
   mComposerScaleBar->endCommand();
@@ -314,9 +320,7 @@ void QgsComposerScaleBarWidget::on_mStrokeColorButton_colorChanged( const QColor
 
   mComposerScaleBar->beginCommand( tr( "Scalebar line color changed" ), QgsComposerMergeCommand::ScaleBarStrokeColor );
   disconnectUpdateSignal();
-  QPen newPen = mComposerScaleBar->pen();
-  newPen.setColor( newColor );
-  mComposerScaleBar->setPen( newPen );
+  mComposerScaleBar->setLineColor( newColor );
   mComposerScaleBar->update();
   connectUpdateSignal();
   mComposerScaleBar->endCommand();
diff --git a/src/core/composer/qgscomposerobject.cpp b/src/core/composer/qgscomposerobject.cpp
index 7b85dd619cb..15d27e942f3 100644
--- a/src/core/composer/qgscomposerobject.cpp
+++ b/src/core/composer/qgscomposerobject.cpp
@@ -63,6 +63,10 @@ const QgsPropertyDefinition QgsComposerObject::sPropertyNameMap
   { QgsComposerObject::PictureSvgOutlineWidth, "dataDefinedSvgOutlineWidth" },
   { QgsComposerObject::LegendTitle, "dataDefinedLegendTitle" },
   { QgsComposerObject::LegendColumnCount, "dataDefinedLegendColumns" },
+  { QgsComposerObject::ScalebarFillColor, "dataDefinedScalebarFill" },
+  { QgsComposerObject::ScalebarFillColor2, "dataDefinedScalebarFill2" },
+  { QgsComposerObject::ScalebarLineColor, "dataDefinedScalebarLineColor" },
+  { QgsComposerObject::ScalebarLineWidth, "dataDefinedScalebarLineWidth" },
 };
 
 
diff --git a/src/core/composer/qgscomposerobject.h b/src/core/composer/qgscomposerobject.h
index a4774f5c55e..29649a2a84f 100644
--- a/src/core/composer/qgscomposerobject.h
+++ b/src/core/composer/qgscomposerobject.h
@@ -81,6 +81,11 @@ class CORE_EXPORT QgsComposerObject: public QObject, public QgsExpressionContext
       //legend item
       LegendTitle, //!< Legend title
       LegendColumnCount, //!< Legend column count
+      //scalebar item
+      ScalebarFillColor, //!< Scalebar fill color
+      ScalebarFillColor2, //!< Scalebar secondary fill color
+      ScalebarLineColor, //!< Scalebar line color
+      ScalebarLineWidth, //!< Scalebar line width
     };
 
     static const QgsPropertyDefinition sPropertyNameMap;
diff --git a/src/core/composer/qgscomposerscalebar.cpp b/src/core/composer/qgscomposerscalebar.cpp
index 83c5db173f9..21ca9551bd5 100644
--- a/src/core/composer/qgscomposerscalebar.cpp
+++ b/src/core/composer/qgscomposerscalebar.cpp
@@ -225,6 +225,41 @@ void QgsComposerScaleBar::invalidateCurrentMap()
   mComposerMap = nullptr;
 }
 
+void QgsComposerScaleBar::refreshDataDefinedProperty( const QgsComposerObject::DataDefinedProperty property, const QgsExpressionContext* context )
+{
+  QgsExpressionContext scopedContext = createExpressionContext();
+  const QgsExpressionContext* evalContext = context ? context : &scopedContext;
+
+  bool forceUpdate = false;
+  //updates data defined properties and redraws item to match
+  if ( property == QgsComposerObject::ScalebarFillColor || property == QgsComposerObject::AllProperties )
+  {
+    mBrush.setColor( mProperties.valueAsColor( QgsComposerObject::ScalebarFillColor, *evalContext, mFillColor ) );
+    forceUpdate = true;
+  }
+  if ( property == QgsComposerObject::ScalebarFillColor2 || property == QgsComposerObject::AllProperties )
+  {
+    mBrush2.setColor( mProperties.valueAsColor( QgsComposerObject::ScalebarFillColor2, *evalContext, mFillColor2 ) );
+    forceUpdate = true;
+  }
+  if ( property == QgsComposerObject::ScalebarLineColor || property == QgsComposerObject::AllProperties )
+  {
+    mPen.setColor( mProperties.valueAsColor( QgsComposerObject::ScalebarLineColor, *evalContext, mLineColor ) );
+    forceUpdate = true;
+  }
+  if ( property == QgsComposerObject::ScalebarLineWidth || property == QgsComposerObject::AllProperties )
+  {
+    mPen.setWidthF( mProperties.valueAsDouble( QgsComposerObject::ScalebarLineWidth, *evalContext, mLineWidth ) );
+    forceUpdate = true;
+  }
+  if ( forceUpdate )
+  {
+    update();
+  }
+
+  QgsComposerObject::refreshDataDefinedProperty( property, context );
+}
+
 // nextNiceNumber(4573.23, d) = 5000 (d=1) -> 4600 (d=10) -> 4580 (d=100) -> 4574 (d=1000) -> etc
 inline double nextNiceNumber( double a, double d = 1 )
 {
@@ -385,15 +420,15 @@ void QgsComposerScaleBar::applyDefaultSettings()
   //default to no background
   setBackgroundEnabled( false );
 
-  mPen = QPen( Qt::black );
+  mPen = QPen( mLineColor );
   mPen.setJoinStyle( mLineJoinStyle );
   mPen.setCapStyle( mLineCapStyle );
-  mPen.setWidthF( 0.3 );
+  mPen.setWidthF( mLineWidth );
 
-  mBrush.setColor( Qt::black );
+  mBrush.setColor( mFillColor );
   mBrush.setStyle( Qt::SolidPattern );
 
-  mBrush2.setColor( Qt::white );
+  mBrush2.setColor( mFillColor2 );
   mBrush2.setStyle( Qt::SolidPattern );
 
   //get default composer font from settings
@@ -681,7 +716,7 @@ bool QgsComposerScaleBar::writeXml( QDomElement& elem, QDomDocument & doc ) cons
   composerScaleBarElem.setAttribute( QStringLiteral( "segmentMillimeters" ), QString::number( mSegmentMillimeters ) );
   composerScaleBarElem.setAttribute( QStringLiteral( "numMapUnitsPerScaleBarUnit" ), QString::number( mNumMapUnitsPerScaleBarUnit ) );
   composerScaleBarElem.appendChild( QgsFontUtils::toXmlElement( mFont, doc, QStringLiteral( "scaleBarFont" ) ) );
-  composerScaleBarElem.setAttribute( QStringLiteral( "outlineWidth" ), QString::number( mPen.widthF() ) );
+  composerScaleBarElem.setAttribute( QStringLiteral( "outlineWidth" ), QString::number( mLineWidth ) );
   composerScaleBarElem.setAttribute( QStringLiteral( "unitLabel" ), mUnitLabeling );
   composerScaleBarElem.setAttribute( QStringLiteral( "units" ), mUnits );
   composerScaleBarElem.setAttribute( QStringLiteral( "lineJoinStyle" ), QgsSymbolLayerUtils::encodePenJoinStyle( mLineJoinStyle ) );
@@ -703,29 +738,26 @@ bool QgsComposerScaleBar::writeXml( QDomElement& elem, QDomDocument & doc ) cons
 
   //fill color
   QDomElement fillColorElem = doc.createElement( QStringLiteral( "fillColor" ) );
-  QColor fillColor = mBrush.color();
-  fillColorElem.setAttribute( QStringLiteral( "red" ), QString::number( fillColor.red() ) );
-  fillColorElem.setAttribute( QStringLiteral( "green" ), QString::number( fillColor.green() ) );
-  fillColorElem.setAttribute( QStringLiteral( "blue" ), QString::number( fillColor.blue() ) );
-  fillColorElem.setAttribute( QStringLiteral( "alpha" ), QString::number( fillColor.alpha() ) );
+  fillColorElem.setAttribute( QStringLiteral( "red" ), QString::number( mFillColor.red() ) );
+  fillColorElem.setAttribute( QStringLiteral( "green" ), QString::number( mFillColor.green() ) );
+  fillColorElem.setAttribute( QStringLiteral( "blue" ), QString::number( mFillColor.blue() ) );
+  fillColorElem.setAttribute( QStringLiteral( "alpha" ), QString::number( mFillColor.alpha() ) );
   composerScaleBarElem.appendChild( fillColorElem );
 
   //fill color 2
   QDomElement fillColor2Elem = doc.createElement( QStringLiteral( "fillColor2" ) );
-  QColor fillColor2 = mBrush2.color();
-  fillColor2Elem.setAttribute( QStringLiteral( "red" ), QString::number( fillColor2.red() ) );
-  fillColor2Elem.setAttribute( QStringLiteral( "green" ), QString::number( fillColor2.green() ) );
-  fillColor2Elem.setAttribute( QStringLiteral( "blue" ), QString::number( fillColor2.blue() ) );
-  fillColor2Elem.setAttribute( QStringLiteral( "alpha" ), QString::number( fillColor2.alpha() ) );
+  fillColor2Elem.setAttribute( QStringLiteral( "red" ), QString::number( mFillColor2.red() ) );
+  fillColor2Elem.setAttribute( QStringLiteral( "green" ), QString::number( mFillColor2.green() ) );
+  fillColor2Elem.setAttribute( QStringLiteral( "blue" ), QString::number( mFillColor2.blue() ) );
+  fillColor2Elem.setAttribute( QStringLiteral( "alpha" ), QString::number( mFillColor2.alpha() ) );
   composerScaleBarElem.appendChild( fillColor2Elem );
 
   //pen color
   QDomElement strokeColorElem = doc.createElement( QStringLiteral( "strokeColor" ) );
-  QColor strokeColor = mPen.color();
-  strokeColorElem.setAttribute( QStringLiteral( "red" ), QString::number( strokeColor.red() ) );
-  strokeColorElem.setAttribute( QStringLiteral( "green" ), QString::number( strokeColor.green() ) );
-  strokeColorElem.setAttribute( QStringLiteral( "blue" ), QString::number( strokeColor.blue() ) );
-  strokeColorElem.setAttribute( QStringLiteral( "alpha" ), QString::number( strokeColor.alpha() ) );
+  strokeColorElem.setAttribute( QStringLiteral( "red" ), QString::number( mLineColor.red() ) );
+  strokeColorElem.setAttribute( QStringLiteral( "green" ), QString::number( mLineColor.green() ) );
+  strokeColorElem.setAttribute( QStringLiteral( "blue" ), QString::number( mLineColor.blue() ) );
+  strokeColorElem.setAttribute( QStringLiteral( "alpha" ), QString::number( mLineColor.alpha() ) );
   composerScaleBarElem.appendChild( strokeColorElem );
 
   //font color
@@ -761,7 +793,8 @@ bool QgsComposerScaleBar::readXml( const QDomElement& itemElem, const QDomDocume
   mMaxBarWidth = itemElem.attribute( QStringLiteral( "maxBarWidth" ), QStringLiteral( "150" ) ).toInt();
   mSegmentMillimeters = itemElem.attribute( QStringLiteral( "segmentMillimeters" ), QStringLiteral( "0.0" ) ).toDouble();
   mNumMapUnitsPerScaleBarUnit = itemElem.attribute( QStringLiteral( "numMapUnitsPerScaleBarUnit" ), QStringLiteral( "1.0" ) ).toDouble();
-  mPen.setWidthF( itemElem.attribute( QStringLiteral( "outlineWidth" ), QStringLiteral( "0.3" ) ).toDouble() );
+  mLineWidth = itemElem.attribute( QStringLiteral( "outlineWidth" ), QStringLiteral( "0.3" ) ).toDouble();
+  mPen.setWidthF( mLineWidth );
   mUnitLabeling = itemElem.attribute( QStringLiteral( "unitLabel" ) );
   mLineJoinStyle = QgsSymbolLayerUtils::decodePenJoinStyle( itemElem.attribute( QStringLiteral( "lineJoinStyle" ), QStringLiteral( "miter" ) ) );
   mPen.setJoinStyle( mLineJoinStyle );
@@ -788,12 +821,14 @@ bool QgsComposerScaleBar::readXml( const QDomElement& itemElem, const QDomDocume
 
     if ( redOk && greenOk && blueOk && alphaOk )
     {
-      mBrush.setColor( QColor( fillRed, fillGreen, fillBlue, fillAlpha ) );
+      mFillColor = QColor( fillRed, fillGreen, fillBlue, fillAlpha );
+      mBrush.setColor( mFillColor );
     }
   }
   else
   {
-    mBrush.setColor( QColor( itemElem.attribute( QStringLiteral( "brushColor" ), QStringLiteral( "#000000" ) ) ) );
+    mFillColor = QColor( itemElem.attribute( QStringLiteral( "brushColor" ), QStringLiteral( "#000000" ) ) );
+    mBrush.setColor( mFillColor );
   }
 
   //fill color 2
@@ -811,12 +846,14 @@ bool QgsComposerScaleBar::readXml( const QDomElement& itemElem, const QDomDocume
 
     if ( redOk && greenOk && blueOk && alphaOk )
     {
-      mBrush2.setColor( QColor( fillRed, fillGreen, fillBlue, fillAlpha ) );
+      mFillColor2 = QColor( fillRed, fillGreen, fillBlue, fillAlpha );
+      mBrush2.setColor( mFillColor2 );
     }
   }
   else
   {
-    mBrush2.setColor( QColor( itemElem.attribute( QStringLiteral( "brush2Color" ), QStringLiteral( "#ffffff" ) ) ) );
+    mFillColor2 = QColor( itemElem.attribute( QStringLiteral( "brush2Color" ), QStringLiteral( "#ffffff" ) ) );
+    mBrush2.setColor( mFillColor2 );
   }
 
   //stroke color
@@ -834,12 +871,14 @@ bool QgsComposerScaleBar::readXml( const QDomElement& itemElem, const QDomDocume
 
     if ( redOk && greenOk && blueOk && alphaOk )
     {
-      mPen.setColor( QColor( strokeRed, strokeGreen, strokeBlue, strokeAlpha ) );
+      mLineColor = QColor( strokeRed, strokeGreen, strokeBlue, strokeAlpha );
+      mPen.setColor( mLineColor );
     }
   }
   else
   {
-    mPen.setColor( QColor( itemElem.attribute( QStringLiteral( "penColor" ), QStringLiteral( "#000000" ) ) ) );
+    mLineColor = QColor( itemElem.attribute( QStringLiteral( "penColor" ), QStringLiteral( "#000000" ) ) );
+    mPen.setColor( mLineColor );
   }
 
   //font color
diff --git a/src/core/composer/qgscomposerscalebar.h b/src/core/composer/qgscomposerscalebar.h
index 5402d5a3181..f8c54b02d4a 100644
--- a/src/core/composer/qgscomposerscalebar.h
+++ b/src/core/composer/qgscomposerscalebar.h
@@ -159,6 +159,58 @@ class CORE_EXPORT QgsComposerScaleBar: public QgsComposerItem
      */
     void setFontColor( const QColor& c ) {mFontColor = c;}
 
+    /** Returns the color used for fills in the scalebar.
+     * @see setFillColor()
+     * @see fillColor2()
+     * @note added in QGIS 3.0
+     */
+    QColor fillColor() const {return mFillColor;}
+
+    /** Sets the color used for fills in the scalebar.
+     * @see fillColor()
+     * @see setFillColor2()
+     * @note added in QGIS 3.0
+     */
+    void setFillColor( const QColor& color ) {mFillColor = color; mBrush.setColor( color ); }
+
+    /** Returns the secondary color used for fills in the scalebar.
+     * @see setFillColor2()
+     * @see fillColor()
+     * @note added in QGIS 3.0
+     */
+    QColor fillColor2() const {return mFillColor2;}
+
+    /** Sets the secondary color used for fills in the scalebar.
+     * @see fillColor2()
+     * @see setFillColor2()
+     * @note added in QGIS 3.0
+     */
+    void setFillColor2( const QColor& color ) {mFillColor2 = color; mBrush2.setColor( color ); }
+
+    /** Returns the color used for lines in the scalebar.
+     * @see setLineColor()
+     * @note added in QGIS 3.0
+     */
+    QColor lineColor() const {return mLineColor;}
+
+    /** Sets the color used for lines in the scalebar.
+     * @see lineColor()
+     * @note added in QGIS 3.0
+     */
+    void setLineColor( const QColor& color ) { mLineColor = color; mPen.setColor( mLineColor ); }
+
+    /** Returns the line width in millimeters for lines in the scalebar.
+     * @see setLineWidth()
+     * @note added in QGIS 3.0
+     */
+    double lineWidth() const {return mLineWidth;}
+
+    /** Sets the line width in millimeters for lines in the scalebar.
+     * @see lineWidth()
+     * @note added in QGIS 3.0
+     */
+    void setLineWidth( double width ) { mLineWidth = width; mPen.setWidthF( width ); }
+
     /** Returns the pen used for drawing the scalebar.
      * @returns QPen used for drawing the scalebar outlines.
      * @see setPen
@@ -166,13 +218,6 @@ class CORE_EXPORT QgsComposerScaleBar: public QgsComposerItem
      */
     QPen pen() const {return mPen;}
 
-    /** Sets the pen used for drawing the scalebar.
-     * @param pen QPen to use for drawing the scalebar outlines.
-     * @see pen
-     * @see setBrush
-     */
-    void setPen( const QPen& pen ) {mPen = pen;}
-
     /** Returns the primary brush for the scalebar.
      * @returns QBrush used for filling the scalebar
      * @see setBrush
@@ -181,14 +226,6 @@ class CORE_EXPORT QgsComposerScaleBar: public QgsComposerItem
      */
     QBrush brush() const {return mBrush;}
 
-    /** Sets primary brush for the scalebar.
-     * @param brush QBrush to use for filling the scalebar
-     * @see brush
-     * @see setBrush2
-     * @see setPen
-     */
-    void setBrush( const QBrush& brush ) {mBrush = brush;}
-
     /** Returns the secondary brush for the scalebar. This is used for alternating color style scalebars, such
      * as single and double box styles.
      * @returns QBrush used for secondary color areas
@@ -197,14 +234,6 @@ class CORE_EXPORT QgsComposerScaleBar: public QgsComposerItem
      */
     QBrush brush2() const {return mBrush2;}
 
-    /** Sets secondary brush for the scalebar. This is used for alternating color style scalebars, such
-     * as single and double box styles.
-     * @param brush QBrush to use for secondary color areas
-     * @see brush2
-     * @see setBrush
-     */
-    void setBrush2( const QBrush& brush ) {mBrush2 = brush;}
-
     double height() const {return mHeight;}
     void setHeight( double h ) {mHeight = h;}
 
@@ -307,6 +336,7 @@ class CORE_EXPORT QgsComposerScaleBar: public QgsComposerItem
     void updateSegmentSize();
     //! Sets mCompositionMap to 0 if the map is deleted
     void invalidateCurrentMap();
+    virtual void refreshDataDefinedProperty( const QgsComposerObject::DataDefinedProperty property = QgsComposerObject::AllProperties, const QgsExpressionContext* context = nullptr ) override;
 
   protected:
 
@@ -332,6 +362,14 @@ class CORE_EXPORT QgsComposerScaleBar: public QgsComposerItem
     //! Font
     QFont mFont;
     QColor mFontColor;
+    //! Fill color
+    QColor mFillColor = QColor( 0, 0, 0 );
+    //! Secondary fill color
+    QColor mFillColor2 = QColor( 255, 255, 255 );
+    //! Line color
+    QColor mLineColor = QColor( 0, 0, 0 );
+    //! Line width
+    double mLineWidth = 0.3;
     //! Outline
     QPen mPen;
     //! Fill
diff --git a/src/ui/composer/qgscomposerscalebarwidgetbase.ui b/src/ui/composer/qgscomposerscalebarwidgetbase.ui
index a54e17f5811..226c285bc4f 100644
--- a/src/ui/composer/qgscomposerscalebarwidgetbase.ui
+++ b/src/ui/composer/qgscomposerscalebarwidgetbase.ui
@@ -60,9 +60,9 @@
       <property name="geometry">
        <rect>
         <x>0</x>
-        <y>0</y>
-        <width>437</width>
-        <height>768</height>
+        <y>-213</y>
+        <width>440</width>
+        <height>855</height>
        </rect>
       </property>
       <layout class="QVBoxLayout" name="mainLayout">
@@ -350,48 +350,7 @@
          <property name="collapsed" stdset="0">
           <bool>true</bool>
          </property>
-         <layout class="QGridLayout" name="gridLayout_4" columnstretch="0,1">
-          <item row="0" column="0">
-           <widget class="QLabel" name="label_4">
-            <property name="text">
-             <string>Box margin</string>
-            </property>
-           </widget>
-          </item>
-          <item row="0" column="1">
-           <widget class="QgsDoubleSpinBox" name="mBoxSizeSpinBox">
-            <property name="prefix">
-             <string/>
-            </property>
-            <property name="suffix">
-             <string> mm</string>
-            </property>
-           </widget>
-          </item>
-          <item row="1" column="0">
-           <widget class="QLabel" name="label_2">
-            <property name="text">
-             <string>Labels margin</string>
-            </property>
-           </widget>
-          </item>
-          <item row="1" column="1">
-           <widget class="QgsDoubleSpinBox" name="mLabelBarSpaceSpinBox">
-            <property name="prefix">
-             <string/>
-            </property>
-            <property name="suffix">
-             <string> mm</string>
-            </property>
-           </widget>
-          </item>
-          <item row="2" column="0">
-           <widget class="QLabel" name="label_3">
-            <property name="text">
-             <string>Line width</string>
-            </property>
-           </widget>
-          </item>
+         <layout class="QGridLayout" name="gridLayout_4" columnstretch="0,1,0">
           <item row="2" column="1">
            <widget class="QgsDoubleSpinBox" name="mLineWidthSpinBox">
             <property name="sizePolicy">
@@ -420,26 +379,13 @@
             </property>
            </widget>
           </item>
-          <item row="3" column="0">
-           <widget class="QLabel" name="label_8">
+          <item row="0" column="0">
+           <widget class="QLabel" name="label_4">
             <property name="text">
-             <string>Join style</string>
+             <string>Box margin</string>
             </property>
            </widget>
           </item>
-          <item row="3" column="1">
-           <widget class="QgsPenJoinStyleComboBox" name="mLineJoinStyleCombo"/>
-          </item>
-          <item row="4" column="0">
-           <widget class="QLabel" name="label_6">
-            <property name="text">
-             <string>Cap style</string>
-            </property>
-           </widget>
-          </item>
-          <item row="4" column="1">
-           <widget class="QgsPenCapStyleComboBox" name="mLineCapStyleCombo"/>
-          </item>
           <item row="5" column="0">
            <widget class="QLabel" name="mAlignmentLabel">
             <property name="text">
@@ -447,7 +393,68 @@
             </property>
            </widget>
           </item>
-          <item row="5" column="1">
+          <item row="1" column="0">
+           <widget class="QLabel" name="label_2">
+            <property name="text">
+             <string>Labels margin</string>
+            </property>
+           </widget>
+          </item>
+          <item row="2" column="0">
+           <widget class="QLabel" name="label_3">
+            <property name="text">
+             <string>Line width</string>
+            </property>
+           </widget>
+          </item>
+          <item row="4" column="0">
+           <widget class="QLabel" name="label_6">
+            <property name="text">
+             <string>Cap style</string>
+            </property>
+           </widget>
+          </item>
+          <item row="3" column="0">
+           <widget class="QLabel" name="label_8">
+            <property name="text">
+             <string>Join style</string>
+            </property>
+           </widget>
+          </item>
+          <item row="2" column="2">
+           <widget class="QgsDataDefinedButtonV2" name="mLineWidthDDBtn">
+            <property name="text">
+             <string>...</string>
+            </property>
+           </widget>
+          </item>
+          <item row="1" column="1" colspan="2">
+           <widget class="QgsDoubleSpinBox" name="mLabelBarSpaceSpinBox">
+            <property name="prefix">
+             <string/>
+            </property>
+            <property name="suffix">
+             <string> mm</string>
+            </property>
+           </widget>
+          </item>
+          <item row="0" column="1" colspan="2">
+           <widget class="QgsDoubleSpinBox" name="mBoxSizeSpinBox">
+            <property name="prefix">
+             <string/>
+            </property>
+            <property name="suffix">
+             <string> mm</string>
+            </property>
+           </widget>
+          </item>
+          <item row="3" column="1" colspan="2">
+           <widget class="QgsPenJoinStyleComboBox" name="mLineJoinStyleCombo"/>
+          </item>
+          <item row="4" column="1" colspan="2">
+           <widget class="QgsPenCapStyleComboBox" name="mLineCapStyleCombo"/>
+          </item>
+          <item row="5" column="1" colspan="2">
            <widget class="QComboBox" name="mAlignmentComboBox"/>
           </item>
          </layout>
@@ -467,14 +474,7 @@
          <property name="collapsed" stdset="0">
           <bool>true</bool>
          </property>
-         <layout class="QGridLayout" name="gridLayout_5" columnstretch="0,1">
-          <item row="1" column="0">
-           <widget class="QLabel" name="label_7">
-            <property name="text">
-             <string>Font color</string>
-            </property>
-           </widget>
-          </item>
+         <layout class="QGridLayout" name="gridLayout_5" columnstretch="0,0">
           <item row="1" column="1">
            <layout class="QHBoxLayout" name="horizontalLayout_2">
             <item>
@@ -511,96 +511,23 @@
             </item>
            </layout>
           </item>
-          <item row="2" column="0">
-           <widget class="QLabel" name="label_9">
+          <item row="0" column="0" colspan="2">
+           <widget class="QPushButton" name="mFontButton">
+            <property name="sizePolicy">
+             <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
+              <horstretch>0</horstretch>
+              <verstretch>0</verstretch>
+             </sizepolicy>
+            </property>
             <property name="text">
-             <string>Fill color</string>
+             <string>Font...</string>
             </property>
            </widget>
           </item>
-          <item row="2" column="1">
-           <layout class="QHBoxLayout" name="horizontalLayout_3">
-            <item>
-             <widget class="QgsColorButton" name="mFillColorButton">
-              <property name="minimumSize">
-               <size>
-                <width>120</width>
-                <height>0</height>
-               </size>
-              </property>
-              <property name="maximumSize">
-               <size>
-                <width>120</width>
-                <height>16777215</height>
-               </size>
-              </property>
-              <property name="text">
-               <string/>
-              </property>
-             </widget>
-            </item>
-            <item>
-             <spacer name="horizontalSpacer_2">
-              <property name="orientation">
-               <enum>Qt::Horizontal</enum>
-              </property>
-              <property name="sizeHint" stdset="0">
-               <size>
-                <width>40</width>
-                <height>20</height>
-               </size>
-              </property>
-             </spacer>
-            </item>
-           </layout>
-          </item>
-          <item row="3" column="0">
-           <widget class="QLabel" name="label_10">
+          <item row="1" column="0">
+           <widget class="QLabel" name="label_7">
             <property name="text">
-             <string>Secondary fill color</string>
-            </property>
-           </widget>
-          </item>
-          <item row="3" column="1">
-           <layout class="QHBoxLayout" name="horizontalLayout_4">
-            <item>
-             <widget class="QgsColorButton" name="mFillColor2Button">
-              <property name="minimumSize">
-               <size>
-                <width>120</width>
-                <height>0</height>
-               </size>
-              </property>
-              <property name="maximumSize">
-               <size>
-                <width>120</width>
-                <height>16777215</height>
-               </size>
-              </property>
-              <property name="text">
-               <string/>
-              </property>
-             </widget>
-            </item>
-            <item>
-             <spacer name="horizontalSpacer_3">
-              <property name="orientation">
-               <enum>Qt::Horizontal</enum>
-              </property>
-              <property name="sizeHint" stdset="0">
-               <size>
-                <width>40</width>
-                <height>20</height>
-               </size>
-              </property>
-             </spacer>
-            </item>
-           </layout>
-          </item>
-          <item row="4" column="0">
-           <widget class="QLabel" name="label_11">
-            <property name="text">
-             <string>Line color</string>
+             <string>Font color</string>
             </property>
            </widget>
           </item>
@@ -625,6 +552,13 @@
               </property>
              </widget>
             </item>
+            <item>
+             <widget class="QgsDataDefinedButtonV2" name="mLineColorDDBtn">
+              <property name="text">
+               <string>...</string>
+              </property>
+             </widget>
+            </item>
             <item>
              <spacer name="horizontalSpacer_4">
               <property name="orientation">
@@ -640,19 +574,113 @@
             </item>
            </layout>
           </item>
-          <item row="0" column="0" colspan="2">
-           <widget class="QPushButton" name="mFontButton">
-            <property name="sizePolicy">
-             <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
-              <horstretch>0</horstretch>
-              <verstretch>0</verstretch>
-             </sizepolicy>
-            </property>
+          <item row="3" column="0">
+           <widget class="QLabel" name="label_10">
             <property name="text">
-             <string>Font...</string>
+             <string>Secondary fill color</string>
             </property>
            </widget>
           </item>
+          <item row="2" column="0">
+           <widget class="QLabel" name="label_9">
+            <property name="text">
+             <string>Fill color</string>
+            </property>
+           </widget>
+          </item>
+          <item row="3" column="1">
+           <layout class="QHBoxLayout" name="horizontalLayout_4">
+            <item>
+             <widget class="QgsColorButton" name="mFillColor2Button">
+              <property name="minimumSize">
+               <size>
+                <width>120</width>
+                <height>0</height>
+               </size>
+              </property>
+              <property name="maximumSize">
+               <size>
+                <width>120</width>
+                <height>16777215</height>
+               </size>
+              </property>
+              <property name="text">
+               <string/>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <widget class="QgsDataDefinedButtonV2" name="mFillColor2DDBtn">
+              <property name="text">
+               <string>...</string>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <spacer name="horizontalSpacer_3">
+              <property name="orientation">
+               <enum>Qt::Horizontal</enum>
+              </property>
+              <property name="sizeHint" stdset="0">
+               <size>
+                <width>40</width>
+                <height>20</height>
+               </size>
+              </property>
+             </spacer>
+            </item>
+           </layout>
+          </item>
+          <item row="4" column="0">
+           <widget class="QLabel" name="label_11">
+            <property name="text">
+             <string>Line color</string>
+            </property>
+           </widget>
+          </item>
+          <item row="2" column="1">
+           <layout class="QHBoxLayout" name="horizontalLayout_3">
+            <item>
+             <widget class="QgsColorButton" name="mFillColorButton">
+              <property name="minimumSize">
+               <size>
+                <width>120</width>
+                <height>0</height>
+               </size>
+              </property>
+              <property name="maximumSize">
+               <size>
+                <width>120</width>
+                <height>16777215</height>
+               </size>
+              </property>
+              <property name="text">
+               <string/>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <widget class="QgsDataDefinedButtonV2" name="mFillColorDDBtn">
+              <property name="text">
+               <string>...</string>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <spacer name="horizontalSpacer_2">
+              <property name="orientation">
+               <enum>Qt::Horizontal</enum>
+              </property>
+              <property name="sizeHint" stdset="0">
+               <size>
+                <width>40</width>
+                <height>20</height>
+               </size>
+              </property>
+             </spacer>
+            </item>
+           </layout>
+          </item>
          </layout>
         </widget>
        </item>
@@ -670,26 +698,26 @@
    <header>qgscolorbutton.h</header>
    <container>1</container>
   </customwidget>
+  <customwidget>
+   <class>QgsDataDefinedButtonV2</class>
+   <extends>QToolButton</extends>
+   <header>qgsdatadefinedbuttonv2.h</header>
+  </customwidget>
   <customwidget>
    <class>QgsDoubleSpinBox</class>
    <extends>QDoubleSpinBox</extends>
    <header>qgsdoublespinbox.h</header>
   </customwidget>
-  <customwidget>
-   <class>QgsPenJoinStyleComboBox</class>
-   <extends>QComboBox</extends>
-   <header>qgspenstylecombobox.h</header>
-  </customwidget>
-  <customwidget>
-   <class>QgsPenCapStyleComboBox</class>
-   <extends>QComboBox</extends>
-   <header>qgspenstylecombobox.h</header>
-  </customwidget>
   <customwidget>
    <class>QgsSpinBox</class>
    <extends>QSpinBox</extends>
    <header>qgsspinbox.h</header>
   </customwidget>
+  <customwidget>
+   <class>QgsPenJoinStyleComboBox</class>
+   <extends>QComboBox</extends>
+   <header>qgspenstylecombobox.h</header>
+  </customwidget>
   <customwidget>
    <class>QgsCollapsibleGroupBoxBasic</class>
    <extends>QGroupBox</extends>
@@ -701,6 +729,11 @@
    <extends>QComboBox</extends>
    <header>qgscomposeritemcombobox.h</header>
   </customwidget>
+  <customwidget>
+   <class>QgsPenCapStyleComboBox</class>
+   <extends>QComboBox</extends>
+   <header>qgspenstylecombobox.h</header>
+  </customwidget>
  </customwidgets>
  <tabstops>
   <tabstop>scrollArea</tabstop>
@@ -724,6 +757,7 @@
   <tabstop>mBoxSizeSpinBox</tabstop>
   <tabstop>mLabelBarSpaceSpinBox</tabstop>
   <tabstop>mLineWidthSpinBox</tabstop>
+  <tabstop>mLineWidthDDBtn</tabstop>
   <tabstop>mLineJoinStyleCombo</tabstop>
   <tabstop>mLineCapStyleCombo</tabstop>
   <tabstop>mAlignmentComboBox</tabstop>
@@ -731,8 +765,11 @@
   <tabstop>mFontButton</tabstop>
   <tabstop>mFontColorButton</tabstop>
   <tabstop>mFillColorButton</tabstop>
+  <tabstop>mFillColorDDBtn</tabstop>
   <tabstop>mFillColor2Button</tabstop>
+  <tabstop>mFillColor2DDBtn</tabstop>
   <tabstop>mStrokeColorButton</tabstop>
+  <tabstop>mLineColorDDBtn</tabstop>
  </tabstops>
  <resources/>
  <connections/>
diff --git a/tests/src/core/testqgscomposerscalebar.cpp b/tests/src/core/testqgscomposerscalebar.cpp
index efa220412a2..23c77308212 100644
--- a/tests/src/core/testqgscomposerscalebar.cpp
+++ b/tests/src/core/testqgscomposerscalebar.cpp
@@ -24,6 +24,7 @@
 #include "qgsrasterlayer.h"
 #include "qgsrasterdataprovider.h"
 #include "qgsfontutils.h"
+#include "qgsproperty.h"
 #include "qgsproject.h"
 
 #include <QLocale>
@@ -53,6 +54,7 @@ class TestQgsComposerScaleBar : public QObject
     void doubleBox();
     void numeric();
     void tick();
+    void dataDefined();
 
   private:
     QgsComposition* mComposition;
@@ -61,7 +63,6 @@ class TestQgsComposerScaleBar : public QObject
     QgsRasterLayer* mRasterLayer;
     QgsMapSettings *mMapSettings;
     QString mReport;
-    QPen mPrevPen;
 };
 
 void TestQgsComposerScaleBar::initTestCase()
@@ -110,9 +111,7 @@ void TestQgsComposerScaleBar::initTestCase()
   mComposerScaleBar->setNumSegmentsLeft( 0 );
   mComposerScaleBar->setNumSegments( 2 );
   mComposerScaleBar->setHeight( 5 );
-  QPen scalePen = mComposerScaleBar->pen();
-  scalePen.setWidthF( 1.0 );
-  mComposerScaleBar->setPen( scalePen );
+  mComposerScaleBar->setLineWidth( 1.0 );
 
   qWarning() << "scalebar font: " << mComposerScaleBar->font().toString() << " exactMatch:" << mComposerScaleBar->font().exactMatch();
 
@@ -158,12 +157,9 @@ void TestQgsComposerScaleBar::singleBox()
 void TestQgsComposerScaleBar::singleBoxAlpha()
 {
   mComposerScaleBar->setStyle( QStringLiteral( "Single Box" ) );
-  mComposerScaleBar->setBrush( QBrush( QColor( 255, 0, 0, 100 ) ) );
-  mComposerScaleBar->setBrush2( QBrush( QColor( 0, 255, 0, 50 ) ) );
-  mPrevPen = mComposerScaleBar->pen();
-  QPen newPen = mPrevPen;
-  newPen.setColor( QColor( 0, 0, 255, 150 ) );
-  mComposerScaleBar->setPen( newPen );
+  mComposerScaleBar->setFillColor( QColor( 255, 0, 0, 100 ) );
+  mComposerScaleBar->setFillColor2( QColor( 0, 255, 0, 50 ) );
+  mComposerScaleBar->setLineColor( QColor( 0, 0, 255, 150 ) );
   mComposerScaleBar->setFontColor( QColor( 255, 0, 255, 100 ) );
   QgsCompositionChecker checker( QStringLiteral( "composerscalebar_singlebox_alpha" ), mComposition );
   checker.setControlPathPrefix( QStringLiteral( "composer_scalebar" ) );
@@ -173,9 +169,10 @@ void TestQgsComposerScaleBar::singleBoxAlpha()
 void TestQgsComposerScaleBar::doubleBox()
 {
   // cleanup singleBoxAlpha
-  mComposerScaleBar->setBrush( QBrush( Qt::black ) );
-  mComposerScaleBar->setBrush2( QBrush( Qt::white ) );
-  mComposerScaleBar->setPen( mPrevPen );
+  mComposerScaleBar->setFillColor( Qt::black );
+  mComposerScaleBar->setFillColor2( Qt::white );
+  mComposerScaleBar->setLineColor( Qt::black );
+  mComposerScaleBar->setLineWidth( 0.3 );
   mComposerScaleBar->setFontColor( Qt::black );
   mComposerScaleBar->setStyle( QStringLiteral( "Double Box" ) );
 
@@ -201,5 +198,19 @@ void TestQgsComposerScaleBar::tick()
   QVERIFY( checker.testComposition( mReport, 0, 0 ) );
 }
 
+void TestQgsComposerScaleBar::dataDefined()
+{
+  mComposerScaleBar->dataDefinedProperties().setProperty( QgsComposerObject::ScalebarFillColor, new QgsExpressionBasedProperty( "'red'" ) );
+  mComposerScaleBar->dataDefinedProperties().setProperty( QgsComposerObject::ScalebarFillColor2, new QgsExpressionBasedProperty( "'blue'" ) );
+  mComposerScaleBar->dataDefinedProperties().setProperty( QgsComposerObject::ScalebarLineColor, new QgsExpressionBasedProperty( "'yellow'" ) );
+  mComposerScaleBar->dataDefinedProperties().setProperty( QgsComposerObject::ScalebarLineWidth, new QgsExpressionBasedProperty( "1.2" ) );
+  mComposerScaleBar->refreshDataDefinedProperty();
+  QCOMPARE( mComposerScaleBar->brush().color().name(), QColor( 255, 0, 0 ).name() );
+  QCOMPARE( mComposerScaleBar->brush2().color().name(), QColor( 0, 0, 255 ).name() );
+  QCOMPARE( mComposerScaleBar->pen().color().name(), QColor( 255, 255, 0 ).name() );
+  QCOMPARE( mComposerScaleBar->pen().widthF(), 1.2 );
+  mComposerScaleBar->setDataDefinedProperties( QgsPropertyCollection() );
+}
+
 QGSTEST_MAIN( TestQgsComposerScaleBar )
 #include "testqgscomposerscalebar.moc"