Designer: Support the 'windowOpacity'-property for forms.

Analogous to windowTitle, etc.
Task-number: QTBUG-7822

2 files changed, 9 insertions, 2 deletions

diff --git a/tools/designer/src/components/formeditor/formwindow.cpp b/tools/designer/src/components/formeditor/formwindow.cpp
index 2d013c9..4cfec95 100644
--- a/tools/designer/src/components/formeditor/formwindow.cpp
+++ b/tools/designer/src/components/formeditor/formwindow.cpp
@@ -484,6 +484,7 @@ void FormWindow::setMainContainer(QWidget *w)
         sheet->setVisible(sheet->indexOf(QLatin1String("windowTitle")), true);
         sheet->setVisible(sheet->indexOf(QLatin1String("windowIcon")), true);
         sheet->setVisible(sheet->indexOf(QLatin1String("windowModality")), true);
+        sheet->setVisible(sheet->indexOf(QLatin1String("windowOpacity")), true);
         sheet->setVisible(sheet->indexOf(QLatin1String("windowFilePath")), true);
         // ### generalize
     }
diff --git a/tools/designer/src/lib/shared/qdesigner_propertysheet.cpp b/tools/designer/src/lib/shared/qdesigner_propertysheet.cpp
index b4b962c..13bb1d7 100644
--- a/tools/designer/src/lib/shared/qdesigner_propertysheet.cpp
+++ b/tools/designer/src/lib/shared/qdesigner_propertysheet.cpp
@@ -610,8 +610,9 @@ QDesignerPropertySheet::QDesignerPropertySheet(QObject *object, QObject *parent)
         createFakeProperty(QLatin1String("whatsThis"));
         createFakeProperty(QLatin1String("acceptDrops"));
         createFakeProperty(QLatin1String("dragEnabled"));
-        // windowModality is visible only for the main container, in which case the form windows enables it on loading
+        // windowModality/Opacity is visible only for the main container, in which case the form windows enables it on loading
         setVisible(createFakeProperty(QLatin1String("windowModality")), false);
+        setVisible(createFakeProperty(QLatin1String("windowOpacity"), double(1.0)), false);
         if (qobject_cast<const QToolBar *>(d->m_object)) { // prevent toolbars from being dragged off
             createFakeProperty(QLatin1String("floatable"), QVariant(true));
         } else {
@@ -1451,8 +1452,13 @@ bool QDesignerPropertySheet::isVisible(int index) const
     }
 
     if (isFakeProperty(index)) {
-        if (type == PropertyWindowModality) // Hidden for child widgets
+        switch (type) {
+        case PropertyWindowModality: // Hidden for child widgets
+        case PropertyWindowOpacity:
             return d->m_info.value(index).visible;
+        default:
+            break;
+        }
         return true;
     }