diff --git a/rtgui/colortoning.cc b/rtgui/colortoning.cc
index b6e001b70..3ec149a0a 100644
--- a/rtgui/colortoning.cc
+++ b/rtgui/colortoning.cc
@@ -339,20 +339,8 @@ ColorToning::ColorToning () : FoldableToolPanel(this, "colortoning", M("TP_COLOR
     // LAB grid
     auto m = ProcEventMapper::getInstance();
     EvColorToningLabGridValue = m->newEvent(RGBCURVE, "HISTORY_MSG_COLORTONING_LABGRID_VALUE");
-    labgridBox = Gtk::manage(new Gtk::HBox());
     labgrid = Gtk::manage(new LabGrid(EvColorToningLabGridValue, M("TP_COLORTONING_LABGRID_VALUES")));
-    labgridBox->pack_start(*labgrid, true, true);
-    labgridReset = Gtk::manage(new Gtk::Button ());
-    labgridReset->add (*Gtk::manage(new RTImage ("undo-small.png", "redo-small.png")));
-    setExpandAlignProperties(labgridReset, false, false, Gtk::ALIGN_CENTER, Gtk::ALIGN_START);
-    labgridReset->set_relief(Gtk::RELIEF_NONE);
-    labgridReset->set_tooltip_markup(M("ADJUSTER_RESET_TO_DEFAULT"));
-    labgridReset->get_style_context()->add_class(GTK_STYLE_CLASS_FLAT);
-    labgridReset->set_can_focus(false);
-    labgridReset->set_size_request(-1, 20);
-    labgridReset->signal_button_release_event().connect(sigc::mem_fun(*this, &ColorToning::resetPressed));
-    labgridBox->pack_start(*labgridReset, false, false);
-    pack_start(*labgridBox, Gtk::PACK_EXPAND_WIDGET, 4);
+    pack_start(*labgrid, Gtk::PACK_EXPAND_WIDGET, 4);
     //------------------------------------------------------------------------
 
     //------------------------------------------------------------------------
@@ -410,14 +398,7 @@ ColorToning::ColorToning () : FoldableToolPanel(this, "colortoning", M("TP_COLOR
     labRegionBox->pack_start(*hb, true, true);
     
     labRegionAB = Gtk::manage(new LabGrid(EvLabRegionAB, M("TP_COLORTONING_LABREGION_ABVALUES"), false));
-    hb = Gtk::manage(new Gtk::HBox());
-    hb->pack_start(*labRegionAB, true, true);
-    labRegionABReset = Gtk::manage(new Gtk::Button());
-    labRegionABReset->set_tooltip_markup(M("ADJUSTER_RESET_TO_DEFAULT"));
-    labRegionABReset->add(*Gtk::manage(new RTImage("undo-small.png", "redo-small.png")));
-    labRegionABReset->signal_button_release_event().connect(sigc::mem_fun(*this, &ColorToning::labRegionResetPressed));
-    add_button(labRegionABReset, hb);
-    labRegionBox->pack_start(*hb);
+    labRegionBox->pack_start(*labRegionAB);
 
     labRegionSaturation = Gtk::manage(new Adjuster(M("TP_COLORTONING_LABREGION_SATURATION"), -100, 100, 1, 0));
     labRegionSaturation->setAdjusterListener(this);
@@ -985,7 +966,7 @@ void ColorToning::methodChanged ()
 {
 
     if (!batchMode) {
-        labgridBox->hide();
+        labgrid->hide();
         labRegionBox->hide();
 
         if (method->get_active_row_number() == 0) { // Lab
@@ -1155,7 +1136,7 @@ void ColorToning::methodChanged ()
             lumamode->hide();
 
             if (method->get_active_row_number() == 5) {
-                labgridBox->show();
+                labgrid->show();
             } else {
                 labRegionBox->show();
             }
@@ -1388,19 +1369,6 @@ void ColorToning::setBatchMode (bool batchMode)
 
 }
 
-bool ColorToning::resetPressed(GdkEventButton* event)
-{
-    labgrid->reset(event->state & GDK_CONTROL_MASK);
-    return false;
-}
-
-
-bool ColorToning::labRegionResetPressed(GdkEventButton *event)
-{
-    labRegionAB->reset(event->state & GDK_CONTROL_MASK);
-    return false;
-}
-
 
 void ColorToning::onLabRegionSelectionChanged()
 {
diff --git a/rtgui/colortoning.h b/rtgui/colortoning.h
index eff26bd46..8fb640cba 100644
--- a/rtgui/colortoning.h
+++ b/rtgui/colortoning.h
@@ -62,8 +62,6 @@ public:
     float blendPipetteValues(CurveEditor *ce, float chan1, float chan2, float chan3);
 
 private:
-    bool resetPressed(GdkEventButton* event);
-    bool labRegionResetPressed(GdkEventButton *event);
     void onLabRegionSelectionChanged();
     void labRegionAddPressed();
     void labRegionRemovePressed();
@@ -126,9 +124,7 @@ private:
     sigc::connection lumamodeConn;
 
     rtengine::ProcEvent EvColorToningLabGridValue;
-    Gtk::Button *labgridReset;
     LabGrid *labgrid;
-    Gtk::HBox *labgridBox;
 
     rtengine::ProcEvent EvLabRegionList;
     rtengine::ProcEvent EvLabRegionAB;
@@ -145,7 +141,6 @@ private:
     Gtk::Button *labRegionRemove;
     Gtk::Button *labRegionUp;
     Gtk::Button *labRegionDown;
-    Gtk::Button *labRegionABReset;
     LabGrid *labRegionAB;
     Adjuster *labRegionSaturation;
     Adjuster *labRegionLightness;
diff --git a/rtgui/labgrid.cc b/rtgui/labgrid.cc
index 5e0d571a5..f680c7322 100644
--- a/rtgui/labgrid.cc
+++ b/rtgui/labgrid.cc
@@ -41,7 +41,11 @@
 using rtengine::Color;
 
 
-bool LabGrid::notifyListener()
+//-----------------------------------------------------------------------------
+// LabGridArea
+//-----------------------------------------------------------------------------
+
+bool LabGridArea::notifyListener()
 {
     if (listener) {
         const auto round =
@@ -55,7 +59,7 @@ bool LabGrid::notifyListener()
 }
 
 
-LabGrid::LabGrid(rtengine::ProcEvent evt, const Glib::ustring &msg, bool enable_low):
+LabGridArea::LabGridArea(rtengine::ProcEvent evt, const Glib::ustring &msg, bool enable_low):
     Gtk::DrawingArea(),
     evt(evt), evtMsg(msg),
     litPoint(NONE),
@@ -70,7 +74,7 @@ LabGrid::LabGrid(rtengine::ProcEvent evt, const Glib::ustring &msg, bool enable_
     add_events(Gdk::EXPOSURE_MASK | Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK | Gdk::POINTER_MOTION_MASK);
 }
 
-void LabGrid::getParams(double &la, double &lb, double &ha, double &hb) const
+void LabGridArea::getParams(double &la, double &lb, double &ha, double &hb) const
 {
     la = low_a;
     ha = high_a;
@@ -79,7 +83,7 @@ void LabGrid::getParams(double &la, double &lb, double &ha, double &hb) const
 }
 
 
-void LabGrid::setParams(double la, double lb, double ha, double hb, bool notify)
+void LabGridArea::setParams(double la, double lb, double ha, double hb, bool notify)
 {
     const double lo = -1.0;
     const double hi = 1.0;
@@ -93,7 +97,7 @@ void LabGrid::setParams(double la, double lb, double ha, double hb, bool notify)
     }
 }
 
-void LabGrid::setDefault (double la, double lb, double ha, double hb)
+void LabGridArea::setDefault (double la, double lb, double ha, double hb)
 {
     defaultLow_a = la;
     defaultLow_b = lb;
@@ -102,7 +106,7 @@ void LabGrid::setDefault (double la, double lb, double ha, double hb)
 }
 
 
-void LabGrid::reset(bool toInitial)
+void LabGridArea::reset(bool toInitial)
 {
     if (toInitial) {
         setParams(defaultLow_a, defaultLow_b, defaultHigh_a, defaultHigh_b, true);
@@ -112,32 +116,32 @@ void LabGrid::reset(bool toInitial)
 }
 
 
-void LabGrid::setEdited(bool yes)
+void LabGridArea::setEdited(bool yes)
 {
     edited = yes;
 }
 
 
-bool LabGrid::getEdited() const
+bool LabGridArea::getEdited() const
 {
     return edited;
 }
 
 
-void LabGrid::setListener(ToolPanelListener *l)
+void LabGridArea::setListener(ToolPanelListener *l)
 {
     listener = l;
 }
 
 
-void LabGrid::on_style_updated ()
+void LabGridArea::on_style_updated ()
 {
     setDirty(true);
     queue_draw ();
 }
 
 
-bool LabGrid::on_draw(const ::Cairo::RefPtr<Cairo::Context> &crf)
+bool LabGridArea::on_draw(const ::Cairo::RefPtr<Cairo::Context> &crf)
 {
     Gtk::Allocation allocation = get_allocation();
     allocation.set_x(0);
@@ -232,7 +236,7 @@ bool LabGrid::on_draw(const ::Cairo::RefPtr<Cairo::Context> &crf)
 }
 
 
-bool LabGrid::on_button_press_event(GdkEventButton *event)
+bool LabGridArea::on_button_press_event(GdkEventButton *event)
 {
     if (event->button == 1) {
         if (event->type == GDK_2BUTTON_PRESS) {
@@ -259,7 +263,7 @@ bool LabGrid::on_button_press_event(GdkEventButton *event)
 }
 
 
-bool LabGrid::on_button_release_event(GdkEventButton *event)
+bool LabGridArea::on_button_release_event(GdkEventButton *event)
 {
     if (event->button == 1) {
         isDragged = false;
@@ -269,7 +273,7 @@ bool LabGrid::on_button_release_event(GdkEventButton *event)
 }
 
 
-bool LabGrid::on_motion_notify_event(GdkEventMotion *event)
+bool LabGridArea::on_motion_notify_event(GdkEventMotion *event)
 {
     if (isDragged && delayconn.connected()) {
         delayconn.disconnect();
@@ -295,7 +299,7 @@ bool LabGrid::on_motion_notify_event(GdkEventMotion *event)
         if (options.adjusterMinDelay == 0) {
             notifyListener();
         } else {
-            delayconn = Glib::signal_timeout().connect(sigc::mem_fun(*this, &LabGrid::notifyListener), options.adjusterMinDelay);
+            delayconn = Glib::signal_timeout().connect(sigc::mem_fun(*this, &LabGridArea::notifyListener), options.adjusterMinDelay);
         }
         queue_draw();
     } else {
@@ -320,35 +324,66 @@ bool LabGrid::on_motion_notify_event(GdkEventMotion *event)
 }
 
 
-Gtk::SizeRequestMode LabGrid::get_request_mode_vfunc() const
+Gtk::SizeRequestMode LabGridArea::get_request_mode_vfunc() const
 {
     return Gtk::SIZE_REQUEST_HEIGHT_FOR_WIDTH;
 }
 
 
-void LabGrid::get_preferred_width_vfunc(int &minimum_width, int &natural_width) const
+void LabGridArea::get_preferred_width_vfunc(int &minimum_width, int &natural_width) const
 {
     minimum_width = 50;
     natural_width = 150;  // same as GRAPH_SIZE from mycurve.h
 }
 
 
-void LabGrid::get_preferred_height_for_width_vfunc(int width, int &minimum_height, int &natural_height) const
+void LabGridArea::get_preferred_height_for_width_vfunc(int width, int &minimum_height, int &natural_height) const
 {
     minimum_height = natural_height = width;
 }
 
 
-bool LabGrid::lowEnabled() const
+bool LabGridArea::lowEnabled() const
 {
     return low_enabled;
 }
 
 
-void LabGrid::setLowEnabled(bool yes)
+void LabGridArea::setLowEnabled(bool yes)
 {
     if (low_enabled != yes) {
         low_enabled = yes;
         queue_draw();
     }
 }
+
+
+//-----------------------------------------------------------------------------
+// LabGrid
+//-----------------------------------------------------------------------------
+
+LabGrid::LabGrid(rtengine::ProcEvent evt, const Glib::ustring &msg, bool enable_low):
+    grid(evt, msg, enable_low)
+{
+    Gtk::Button *reset = Gtk::manage(new Gtk::Button());
+    reset->set_tooltip_markup(M("ADJUSTER_RESET_TO_DEFAULT"));
+    reset->add(*Gtk::manage(new RTImage("undo-small.png", "redo-small.png")));
+    reset->signal_button_release_event().connect(sigc::mem_fun(*this, &LabGrid::resetPressed));
+
+    setExpandAlignProperties(reset, false, false, Gtk::ALIGN_CENTER, Gtk::ALIGN_START);
+    reset->set_relief(Gtk::RELIEF_NONE);
+    reset->get_style_context()->add_class(GTK_STYLE_CLASS_FLAT);
+    reset->set_can_focus(false);
+    reset->set_size_request(-1, 20);
+
+    pack_start(grid, true, true);
+    pack_start(*reset, false, false);
+    show_all_children();
+}
+
+
+bool LabGrid::resetPressed(GdkEventButton *event)
+{
+    grid.reset(event->state & GDK_CONTROL_MASK);
+    return false;    
+}
diff --git a/rtgui/labgrid.h b/rtgui/labgrid.h
index 715175f74..35e259996 100644
--- a/rtgui/labgrid.h
+++ b/rtgui/labgrid.h
@@ -43,7 +43,7 @@
 #include "toolpanel.h"
 
 
-class LabGrid: public Gtk::DrawingArea, public BackBuffer {
+class LabGridArea: public Gtk::DrawingArea, public BackBuffer {
 private:
     rtengine::ProcEvent evt;
     Glib::ustring evtMsg;
@@ -73,7 +73,7 @@ private:
     void getLitPoint();
 
 public:
-    LabGrid(rtengine::ProcEvent evt, const Glib::ustring &msg, bool enable_low=true);
+    LabGridArea(rtengine::ProcEvent evt, const Glib::ustring &msg, bool enable_low=true);
 
     void getParams(double &la, double &lb, double &ha, double &hb) const;
     void setParams(double la, double lb, double ha, double hb, bool notify);
@@ -96,3 +96,24 @@ public:
     void get_preferred_height_for_width_vfunc (int width, int &minimum_height, int &natural_height) const;
 };
 
+
+class LabGrid: public Gtk::HBox {
+private:
+    LabGridArea grid;
+
+    bool resetPressed(GdkEventButton *event);
+    
+public:
+    LabGrid(rtengine::ProcEvent evt, const Glib::ustring &msg, bool enable_low=true);
+
+    void getParams(double &la, double &lb, double &ha, double &hb) const { return grid.getParams(la, lb, ha, hb); }
+    void setParams(double la, double lb, double ha, double hb, bool notify) { grid.setParams(la, lb, ha, hb, notify); }
+    void setDefault (double la, double lb, double ha, double hb) { grid.setDefault(la, lb, ha, hb); }
+    void setEdited(bool yes) { grid.setEdited(yes); }
+    bool getEdited() const { return grid.getEdited(); }
+    void reset(bool toInitial) { grid.reset(toInitial); }
+    void setListener(ToolPanelListener *l) { grid.setListener(l); }
+    bool lowEnabled() const { return grid.lowEnabled(); }
+    void setLowEnabled(bool yes) { grid.setLowEnabled(yes); }
+};
+