Allow SpinBox components to contain fractional values

resources/qml/Preferences/Materials/MaterialsView.qml

@@ -243,7 +243,7 @@ Item
                 value: properties.density
                 decimals: 2
                 suffix: " g/cm³"
-//                stepSize: 0.01 // spinboxes can only cointain reals, a non-integer value can not be entered as the step size
+                stepSize: 0.01
 
                 onEditingFinished: base.setMetaDataEntry("properties/density", properties.density, value)
                 onValueChanged: updateCostPerMeter()
@@ -258,7 +258,7 @@ Item
                 value: properties.diameter
                 decimals: 2
                 suffix: " mm"
-//                stepSize: 0.01 // spinboxes can only cointain reals, a non-integer value can not be entered as the step size
+                stepSize: 0.01
 
                 onEditingFinished:
                 {
@@ -389,12 +389,6 @@ Item
 
             Item { width: parent.width; height: UM.Theme.getSize("default_margin").height }
         }
-
-        function updateCostPerMeter()
-        {
-            base.spoolLength = calculateSpoolLength(diameterSpinBox.value, densitySpinBox.value, spoolWeightSpinBox.value);
-            base.costPerMeter = calculateCostPerMeter(spoolCostSpinBox.value);
-        }
     }
 
     ListView
@@ -606,4 +600,10 @@ Item
         base.setMetaDataEntry("brand", old_brand, new_brand)
         properties.brand = new_brand
     }
+
+    function updateCostPerMeter()
+    {
+        base.spoolLength = calculateSpoolLength(diameterSpinBox.value, densitySpinBox.value, spoolWeightSpinBox.value);
+        base.costPerMeter = calculateCostPerMeter(spoolCostSpinBox.value);
+    }
 }

resources/qml/SpinBox.qml

@@ -4,35 +4,64 @@
 import QtQuick 2.2
 import QtQuick.Controls 2.15
 
-SpinBox
+Item
 {
     id: base
 
+    height: spinBox.height
+
     property string prefix: ""
     property string suffix: ""
     property int decimals: 0
+    property real stepSize: 1
+    property real value: 0
+    property real from: 0
+    property real to: 99
 
-    signal editingFinished()
+    property alias wrap: spinBox.wrap
 
-    valueFromText: function(text)
+    property bool editable: true
-    {
-        return parseFloat(text.substring(prefix.length, text.length - suffix.length), decimals);
-    }
 
-    textFromValue: function(value)
+    property var validator: RegExpValidator
-    {
-        return prefix + value.toFixed(decimals) + suffix
-    }
-
-    validator: RegExpValidator
     {
         regExp: new RegExp("^" + prefix + "([0-9]+[.|,]?[0-9]*)?" + suffix + "$")
     }
 
+    signal editingFinished()
+
+    SpinBox
+    {
+        id: spinBox
+        anchors.fill: base
+
+        stepSize: 1
+
+        value: Math.floor(base.value / base.stepSize)
+        from: Math.floor(base.from / base.stepSize)
+        to: Math.floor(base.to / base.stepSize)
+        editable: base.editable
+
+        valueFromText: function(text)
+        {
+            return parseFloat(text.substring(prefix.length, text.length - suffix.length)) / base.stepSize;
+        }
+
+        textFromValue: function(value)
+        {
+            return prefix + (value * base.stepSize).toFixed(decimals) + suffix;
+        }
+
+        validator: base.validator
+
+        onValueModified:
+        {
+            base.value = value * base.stepSize;
+        }
+
         contentItem: TextField
         {
-        text: base.textFromValue(base.value, base.locale)
+            text: spinBox.textFromValue(spinBox.value, spinBox.locale)
-        selectByMouse: true
+            selectByMouse: base.editable
             background: Item {}
             validator: base.validator
 
@@ -40,7 +69,8 @@ SpinBox
             {
                 if(!activeFocus)
                 {
-                base.editingFinished()
+                    base.editingFinished();
+                }
             }
         }
     }