QmlDesigner: Hide the cursor when dragging in SpinBox

Change-Id: I3900c510bc5510eaba51ea2ae8700aa9ca72f59a
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

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

@@ -47,6 +47,9 @@ Item {
     StudioControls.RealSpinBox {
         id: spinBox
 
+        onDragStarted: hideCursor();
+        onDragEnded: restoreCursor();
+
         property variant backendValue
         property bool hasSlider: wrapper.sliderIndicatorVisible
 

src/plugins/qmldesigner/components/propertyeditor/propertyeditorcontextobject.cpp

@@ -35,6 +35,8 @@
 #include <utils/algorithm.h>
 #include <utils/qtcassert.h>
 
+#include <QApplication>
+#include <QCursor>
 #include <QQmlContext>
 
 static uchar fromHex(const uchar c, const uchar c2)
@@ -386,4 +388,22 @@ void PropertyEditorContextObject::setHasAliasExport(bool hasAliasExport)
     emit hasAliasExportChanged();
 }
 
+void PropertyEditorContextObject::hideCursor()
+{
+    if (QApplication::overrideCursor())
+        return;
+
+    QApplication::setOverrideCursor(QCursor(Qt::BlankCursor));
+    m_lastPos = QCursor::pos();
+}
+
+void PropertyEditorContextObject::restoreCursor()
+{
+    if (!QApplication::overrideCursor())
+        return;
+
+    QCursor::setPos(m_lastPos);
+    QApplication::restoreOverrideCursor();
+}
+
 } //QmlDesigner

src/plugins/qmldesigner/components/propertyeditor/propertyeditorcontextobject.h

@@ -32,6 +32,7 @@
 #include <QQmlPropertyMap>
 #include <QQmlComponent>
 #include <QColor>
+#include <QPoint>
 
 namespace QmlDesigner {
 
@@ -85,6 +86,9 @@ public:
     Q_INVOKABLE void changeTypeName(const QString &typeName);
     Q_INVOKABLE void insertKeyframe(const QString &propertyName);
 
+    Q_INVOKABLE void hideCursor();
+    Q_INVOKABLE void restoreCursor();
+
     int majorVersion() const;
     int majorQtQuickVersion() const;
     int minorQtQuickVersion() const;
@@ -157,6 +161,8 @@ private:
     QQmlComponent *m_qmlComponent;
     QQmlContext *m_qmlContext;
 
+    QPoint m_lastPos;
+
     Model *m_model = nullptr;
 
     bool m_aliasExport = false;