diff --git a/GUI/View/Tool/DesignerHelper.cpp b/GUI/View/Tool/DesignerHelper.cpp
index 94116f7c5500c28642ed0733e66ec568c75cd6ad..854a5ccf7f493867e45a36b9aaad15de48c47863 100644
--- a/GUI/View/Tool/DesignerHelper.cpp
+++ b/GUI/View/Tool/DesignerHelper.cpp
@@ -14,245 +14,6 @@
 
 #include "GUI/View/Tool/DesignerHelper.h"
 #include "GUI/View/Tool/StyleUtils.h"
-#include <QPainter>
-#include <cmath>
-#include <iostream>
-
-namespace {
-
-double m_current_zoom_level = 1.0;
-}
-
-
-QGradient DesignerHelper::getLayerGradient(const QColor& color, const QRectF& rect)
-{
-    QColor c = color;
-    c.setAlpha(160);
-    QLinearGradient result(rect.topLeft(), rect.bottomRight());
-#if QT_VERSION >= QT_VERSION_CHECK(5, 13, 0)
-    result.setColorAt(0, c.darker(150));
-    result.setColorAt(0.5, c.lighter(200));
-    result.setColorAt(1, c.darker(150));
-#else
-    result.setColorAt(0, c.dark(150));
-    result.setColorAt(0.5, c.light(200));
-    result.setColorAt(1, c.dark(150));
-#endif
-    return result;
-}
-
-QGradient DesignerHelper::getDecorationGradient(const QColor& color, const QRectF& rect)
-{
-    const QColor& c = color;
-    // c.setAlpha(200);
-    QLinearGradient result(rect.x() + rect.width() / 2, rect.y(), rect.x() + rect.width() / 2,
-                           rect.y() + rect.height());
-    result.setColorAt(0, c);
-    result.setColorAt(0.5, c.lighter(150));
-    result.setColorAt(1, c);
-    return result;
-}
-
-QPixmap DesignerHelper::getSceneBackground()
-{
-    const int size = 10;
-    QPixmap result(size, size);
-    result.fill(QColor(250, 250, 250));
-    QPainter tilePainter(&result);
-    QColor color(220, 220, 220);
-    tilePainter.fillRect(0.0, 0.0, 2, 2, color);
-    tilePainter.end();
-
-    return result;
-}
-
-QPixmap DesignerHelper::getPixmapLayer()
-{
-    QRect rect(0, 0, layerWidth(), layerHeight());
-    QPixmap pixmap(rect.width() + 1, rect.height() + 1);
-    pixmap.fill(Qt::transparent);
-    QPainter painter(&pixmap);
-    painter.setPen(Qt::black);
-    painter.setBrush(getLayerGradient(Qt::green, rect));
-    painter.drawRect(rect);
-    return pixmap;
-}
-
-QPixmap DesignerHelper::getPixmapMultiLayer()
-{
-    auto rect = getDefaultMultiLayerRect();
-    QPixmap pixmap(rect.width() + 1, rect.height() + 1);
-    pixmap.fill(Qt::transparent);
-    QPainter painter(&pixmap);
-    painter.setPen(Qt::black);
-    painter.setBrush(getLayerGradient(QColor(75, 157, 249), rect));
-    painter.drawRect(rect);
-    painter.setPen(Qt::DashLine);
-    painter.drawLine(0, layerHeight() * 0.3, rect.width(), layerHeight() * 0.3);
-    painter.drawLine(0, layerHeight() * 0.6, rect.width(), layerHeight() * 0.6);
-    return pixmap;
-}
-
-QPixmap DesignerHelper::getPixmapParticleLayout()
-{
-    auto rect = getParticleLayoutBoundingRect();
-    QPixmap pixmap(rect.width() + 1, rect.height() + 1);
-    pixmap.fill(Qt::transparent);
-    QPainter painter(&pixmap);
-    painter.setPen(Qt::black);
-    painter.setBrush(getDecorationGradient(QColor(135, 206, 50), rect));
-    painter.drawRoundedRect(rect, 3, 3);
-    return pixmap;
-}
-
-QPixmap DesignerHelper::getPixmapInterference()
-{
-    auto rect = getInterferenceBoundingRect();
-    QPixmap pixmap(rect.width() + 1, rect.height() + 1);
-    pixmap.fill(Qt::transparent);
-    QPainter painter(&pixmap);
-    painter.setPen(Qt::black);
-    painter.setBrush(getDecorationGradient(Qt::lightGray, rect));
-    painter.drawRoundedRect(rect, 3, 3);
-    return pixmap;
-}
-
-QPixmap DesignerHelper::getPixmapParticle()
-{
-    auto rect = getParticleBoundingRect();
-    QPixmap pixmap(rect.width() + 1, rect.height() + 1);
-    pixmap.fill(Qt::transparent);
-    QPainter painter(&pixmap);
-    painter.setPen(Qt::black);
-    painter.setBrush(getDecorationGradient(getDefaultParticleColor(), rect));
-    painter.drawRoundedRect(rect, 5, 5);
-    return pixmap;
-}
-
-bool DesignerHelper::sort_layers(QGraphicsItem* left, QGraphicsItem* right)
-{
-    return left->y() < right->y();
-}
-
-// non-linear conversion of layer's thickness in nanometers to screen size to have reasonable
-// graphics representation
-int DesignerHelper::nanometerToScreen(double nanometer)
-{
-    const int ymin(layerHeight());
-    const int ymax(500);
-    int result(ymin);
-    if (nanometer > 0)
-        result = qBound(ymin, ymin + (int)std::pow(nanometer, 0.9), ymax);
-    return result;
-}
-
-QRectF DesignerHelper::getDefaultBoundingRect(const QString& name)
-{
-    if (name == "MultiLayer")
-        return getDefaultMultiLayerRect();
-    if (name == "Layer")
-        return QRectF(0, 0, layerWidth(), layerHeight());
-    if (name == "ParticleLayout")
-        return getParticleLayoutBoundingRect();
-    if (name == "Rotation")
-        return getTransformationBoundingRect();
-    if (name.startsWith("FormFactor") || name == "Particle" || name == "ParticleCoreShell")
-        return getParticleBoundingRect();
-    if (name.startsWith("Interference"))
-        return getInterferenceBoundingRect();
-    return QRectF(0, 0, 50, 50);
-}
-
-QColor DesignerHelper::getDefaultColor(const QString& name)
-{
-    if (name == "MultiLayer")
-        // return QColor(Qt::blue);
-        return QColor(51, 116, 255);
-    if (name == "Layer")
-        // return QColor(Qt::green);
-        return QColor(26, 156, 9);
-    if (name == "ParticleLayout")
-        return QColor(135, 206, 50);
-    if (name.startsWith("FormFactor") || name == "Particle" || name == "ParticleCoreShell")
-        return QColor(210, 223, 237);
-    if (name.startsWith("Interference"))
-        return QColor(255, 236, 139);
-    if (name == "Transparant red")
-        return QColor(0xFF, 0, 0, 0x80);
-    if (name == "Transparant blue")
-        return QColor(0, 0, 0xFF, 0x80);
-    return QColor(Qt::lightGray);
-}
-
-QPixmap DesignerHelper::getMimePixmap(const QString& name)
-{
-    QRectF default_rect = getDefaultBoundingRect(name);
-    QRectF mime_rect(0, 0, default_rect.width() * m_current_zoom_level,
-                     default_rect.height() * m_current_zoom_level);
-
-    QPixmap pixmap(mime_rect.width() + 1, mime_rect.height() + 1);
-    pixmap.fill(Qt::transparent);
-    QPainter painter(&pixmap);
-    painter.setPen(Qt::black);
-    painter.setBrush(getDecorationGradient(getDefaultColor(name), mime_rect));
-    painter.drawRoundedRect(mime_rect, 1, 1);
-    return pixmap;
-}
-
-int DesignerHelper::getHeaderFontSize()
-{
-    return GUI::Util::Style::SystemPointSize() * 1.5;
-}
-
-int DesignerHelper::layerWidth()
-{
-    return GUI::Util::Style::SizeOfLetterM().width() * 18;
-}
-
-int DesignerHelper::layerHeight()
-{
-    return GUI::Util::Style::SizeOfLetterM().height() * 2;
-}
-
-QColor DesignerHelper::getDefaultLayerColor()
-{
-    return QColor(Qt::lightGray);
-}
-
-QRectF DesignerHelper::getDefaultMultiLayerRect()
-{
-    return QRectF(0, 0, layerWidth() * 1.15, layerHeight());
-}
-
-QRectF DesignerHelper::getParticleLayoutBoundingRect()
-{
-    return QRectF(0, 0, layerHeight() * 3.5, layerHeight() * 4.5);
-}
-
-QRectF DesignerHelper::getInterferenceBoundingRect()
-{
-    return QRectF(0, 0, layerHeight() * 4.5, layerHeight() * 4);
-}
-
-QColor DesignerHelper::getDefaultParticleColor()
-{
-    return QColor(210, 223, 237);
-}
-
-QRectF DesignerHelper::getParticleBoundingRect()
-{
-    return QRectF(0, 0, layerHeight() * 3.5, layerHeight() * 4);
-}
-
-QColor DesignerHelper::getDefaultTransformationColor()
-{
-    return QColor(145, 50, 220);
-}
-
-QRectF DesignerHelper::getTransformationBoundingRect()
-{
-    return QRectF(0, 0, layerHeight() * 4, layerHeight() * 2);
-}
 
 int DesignerHelper::getSectionFontSize()
 {
diff --git a/GUI/View/Tool/DesignerHelper.h b/GUI/View/Tool/DesignerHelper.h
index cc0b8d6dae702d81b0659132bd71a3ce38bdc374..08d9e251f470b1bf12678db648ad7c3d581aeab9 100644
--- a/GUI/View/Tool/DesignerHelper.h
+++ b/GUI/View/Tool/DesignerHelper.h
@@ -15,58 +15,10 @@
 #ifndef BORNAGAIN_GUI_VIEW_TOOL_DESIGNERHELPER_H
 #define BORNAGAIN_GUI_VIEW_TOOL_DESIGNERHELPER_H
 
-#include <QColor>
-#include <QGradient>
-#include <QGraphicsItem>
-#include <QRect>
-
 //! collection of static methods with SampleDesigner geometry settings
 class DesignerHelper {
 public:
-    static int layerWidth();
-    static int layerHeight();
-    static QColor getDefaultLayerColor();
-
-    static QRectF getDefaultMultiLayerRect();
-
-    static QRectF getParticleLayoutBoundingRect();
-
-    static QRectF getInterferenceBoundingRect();
-
-    static QColor getDefaultParticleColor();
-    static QRectF getParticleBoundingRect();
-
-    static QColor getDefaultTransformationColor();
-    static QRectF getTransformationBoundingRect();
-
-    static QGradient getLayerGradient(const QColor& color, const QRectF& rect);
-    static QGradient getDecorationGradient(const QColor& color, const QRectF& rect);
-
-    static QPixmap getSceneBackground();
-    static QPixmap getPixmapLayer();
-    static QPixmap getPixmapMultiLayer();
-    static QPixmap getPixmapParticleLayout();
-    static QPixmap getPixmapInterference();
-    static QPixmap getPixmapParticle();
-
-    //! sort graphics item according they y-coordinate
-    static bool sort_layers(QGraphicsItem* left, QGraphicsItem* right);
-
-    //! non-linear conversion of layer's thickness in nanometers to screen size
-    //! to have reasonable graphics representation of layer in the form of QRect
-    static int nanometerToScreen(double nanometer);
-
-    //! returns default bounding rectangle for given IvView name
-    static QRectF getDefaultBoundingRect(const QString& name);
-
-    //! returns default color for IView with given name
-    static QColor getDefaultColor(const QString& name);
-
-    //! returns Mime pixmap for givew IView name
-    static QPixmap getMimePixmap(const QString& name);
-
     //! returns system dependent font size
-    static int getHeaderFontSize();
     static int getSectionFontSize();
     static int getLabelFontSize();
     static int getPortFontSize();