QmlDesigner: Adding support for fontSizeMode

Change-Id: I34d5b4b801951929c8463ac741ee89977a017781
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

share/qtcreator/qmldesigner/propertyEditorQmlSources/HelperWidgets/StandardTextSection.qml

@@ -37,6 +37,7 @@ Section {
     property bool showVerticalAlignment: false
     property bool useLineEdit: true
     property bool showFormatProperty: false
+    property bool showFontSizeMode: false
 
     SectionLayout {
         columns: 2
@@ -116,5 +117,16 @@ Section {
             backendValue: backendValues.renderType
             Layout.fillWidth: true
         }
+
+        Label {
+            text: qsTr("Font size mode")
+            toolTip: qsTr("Specifies how the font size of the displayed text is determined.")
+        }
+        ComboBox {
+            scope: "Text"
+            model:  ["FixedSize", "HorizontalFit", "VerticalFit", "Fit"]
+            backendValue: backendValues.fontSizeMode
+            Layout.fillWidth: true
+        }
     }
 }

share/qtcreator/qmldesigner/propertyEditorQmlSources/QtQuick/TextSpecifics.qml

@@ -37,6 +37,7 @@ Column {
         showVerticalAlignment: true
         showFormatProperty: true
         showElide: true
+        showFontSizeMode: true
     }
 
     Section {