QmlDesigner: Add missing font and text properties for Qt 5.10

Task-number: QTPM-862
Change-Id: I12813cf429f4f4a5a85c4e3c6d74eb7ac1a45bd2
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

share/qtcreator/qml-type-descriptions/builtins.qmltypes

@@ -673,6 +673,8 @@ Module {
         Property { name: "capitalization"; type: "Capitalization" }
         Property { name: "letterSpacing"; type: "qreal" }
         Property { name: "wordSpacing"; type: "qreal" }
+        Property { name: "kerning"; type: "bool" }
+        Property { name: "preferShaping"; type: "bool" }
     }
     Component {
         name: "QDeclarativeGradient"

share/qtcreator/qmldesigner/propertyEditorQmlSources/imports/HelperWidgets/FontSection.qml

@@ -191,11 +191,13 @@ Section {
                 width: 42
             }
             SpinBox {
-                maximumValue: 9999999
+                maximumValue: 500
-                minimumValue: -9999999
+                minimumValue: -500
-                decimals: 0
+                decimals: 2
                 backendValue: backendValues.font_wordSpacing
                 Layout.fillWidth: true
+                Layout.minimumWidth: 60
+                stepSize: 0.1
             }
             Item {
                 width: 4
@@ -208,11 +210,39 @@ Section {
                 width: 42
             }
             SpinBox {
-                maximumValue: 9999999
+                maximumValue: 500
-                minimumValue: -9999999
+                minimumValue: -500
-                decimals: 0
+                decimals: 2
                 backendValue: backendValues.font_letterSpacing
                 Layout.fillWidth: true
+                Layout.minimumWidth: 60
+                stepSize: 0.1
+            }
+        }
+
+        Label {
+            visible:  minorQtQuickVersion > 9
+            text: qsTr("Performance")
+        }
+
+        SecondColumnLayout {
+            visible:  minorQtQuickVersion > 9
+
+            CheckBox {
+                text: qsTr("Kerning")
+                Layout.fillWidth: true
+                backendValue: (backendValues.font_kerning === undefined) ? dummyBackendValue : backendValues.font_kerning
+                tooltip: qsTr("Enables or disables the kerning OpenType feature when shaping the text. This may " +
+                              "improve performance when creating or changing the text, at the expense of some cosmetic features. The default value is true.")
+            }
+
+            CheckBox {
+                text: qsTr("Prefer Shaping")
+                Layout.fillWidth: true
+                backendValue: (backendValues.font_preferShaping === undefined) ? dummyBackendValue : backendValues.font_preferShaping
+                tooltip: qsTr("Sometimes, a font will apply complex rules to a set of characters in order to display them correctly.\n" +
+                              "In some writing systems, such as Brahmic scripts, this is required in order for the text to be legible, but in e.g." +
+                              "Latin script,\n it is merely a cosmetic feature. Setting the preferShaping property to false will disable all such features\nwhen they are not required, which will improve performance in most cases.")
             }
         }
     }

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

@@ -128,5 +128,21 @@ Section {
             backendValue: backendValues.fontSizeMode
             Layout.fillWidth: true
         }
+
+
+        Label {
+            text: qsTr("Line Height")
+            tooltip: qsTr("Sets the line height for the text.")
+        }
+
+        SpinBox {
+            Layout.fillWidth: true
+            backendValue: (backendValues.lineHeight === undefined) ? dummyBackendValue : backendValues.lineHeight
+            maximumValue: 500
+            minimumValue: 0
+            decimals: 2
+            stepSize: 0.1
+        }
+
     }
 }

src/libs/qmljs/qmljsvalueowner.cpp

@@ -493,6 +493,8 @@ SharedValueOwner::SharedValueOwner(SharedValueOwnerKind kind)
     _qmlFontObject->setMember(QLatin1String("letterSpacing"), realValue());
     _qmlFontObject->setMember(QLatin1String("wordSpacing"), realValue());
     _qmlFontObject->setMember(QLatin1String("hintingPreference"), unknownValue());
+    _qmlFontObject->setMember(QLatin1String("kerning"), booleanValue());
+    _qmlFontObject->setMember(QLatin1String("preferShaping"), booleanValue());
 
     _qmlPointObject = newObject(/*prototype =*/ 0);
     _qmlPointObject->setClassName(QLatin1String("Point"));