Index: sources/gui/qml/pages/treatment/TreatmentStack.qml
===================================================================
diff -u -r5c21e83a3fdc897cb99ac62e1cec0213f411cd73 -r1b24a85761c65a685fac98f396e244af97b94443
--- sources/gui/qml/pages/treatment/TreatmentStack.qml	(.../TreatmentStack.qml)	(revision 5c21e83a3fdc897cb99ac62e1cec0213f411cd73)
+++ sources/gui/qml/pages/treatment/TreatmentStack.qml	(.../TreatmentStack.qml)	(revision 1b24a85761c65a685fac98f396e244af97b94443)
@@ -98,41 +98,64 @@
                 _lineSerries2.append(x2, r      )
             }
         }
-        ChartView {
-            title: "Line"
+        Column {
             anchors.fill: parent
-            antialiasing: true
-            backgroundColor: Colors.transparent
-            ValueAxis { id: xAxis1
-                color: Colors.white
-                min: 0
-                max: _timer.x1
+            anchors.topMargin: Variables.mainMenuHeight
+            Slider { id : _zoomSlider
+                width   : parent.width
+                minimum : 0
+                maximum : 2
+                step    : 0.1
+                value   : 0
+                onValueChanged: _chartView.zoom(value)
             }
-            ValueAxis { id: yAxis1
-                color: Colors.white
-                min: 0
-                max: 10
+            TouchRect {
+                width   : 50
+                height  : 50
+                onClicked: _chartView.zoomReset()
             }
-            SplineSeries { id: _lineSerries1
-                name: "LineSeries"
-                axisX: xAxis1
-                axisY: yAxis1
+
+            ChartView { id: _chartView
+                title: "Line"
+                width: parent.width
+                height: parent.height - _zoomSlider.height
+                antialiasing: true
+                backgroundColor: Colors.transparent
+
+                legend.labelColor: Colors.white
+
+                ValueAxis { id: xAxis1
+                    color: Colors.white
+                    min: 0
+                    max: _timer.x1
+                }
+                ValueAxis { id: yAxis1
+                    color: Colors.white
+                    min: 0
+                    max: 10
+                }
+                SplineSeries { id: _lineSerries1
+                    name: "LineSeries"
+                    axisX: xAxis1
+                    axisY: yAxis1
+                }
+                ValueAxis { id: xAxis2
+                    color: Colors.white
+                    min: 0
+                    max: _timer.x2
+                }
+                ValueAxis { id: yAxis2
+                    color: Colors.white
+                    labelsColor: Colors.red
+                    min: 0
+                    max: 10
+                }
+                SplineSeries { id: _lineSerries2
+                    name: "LineSeries"
+                    axisX: xAxis2
+                    axisY: yAxis2
+                }
             }
-            ValueAxis { id: xAxis2
-                color: Colors.white
-                min: 0
-                max: _timer.x2
-            }
-            ValueAxis { id: yAxis2
-                color: Colors.white
-                min: 0
-                max: 10
-            }
-            SplineSeries { id: _lineSerries2
-                name: "LineSeries"
-                axisX: xAxis2
-                axisY: yAxis2
-            }
         }
     }