Enhance quickwidget example with all grabbing cases

Add a demo of QQuickItem::grabToImage(), in addition to grabFramebuffer()
and render(). This way all possible approaches are demonstrated and tested.

Task-number: QTBUG-55879
Change-Id: I13c427730c416f0d87f83092627e2cb46aba2cc4
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
Reviewed-by: Andy Nichols <andy.nichols@qt.io>

1 files changed, 6 insertions, 0 deletions

diff --git a/examples/quick/quickwidgets/quickwidget/rotatingsquare.qml b/examples/quick/quickwidgets/quickwidget/rotatingsquare.qml
index 0c25eddf88..03b1114d20 100644
--- a/examples/quick/quickwidgets/quickwidget/rotatingsquare.qml
+++ b/examples/quick/quickwidgets/quickwidget/rotatingsquare.qml
@@ -57,4 +57,10 @@ Rectangle {
         anchors.centerIn: parent
         text: "Qt Quick running in a widget"
     }
+
+    function performLayerBasedGrab(fn) {
+        root.grabToImage(function(result) {
+            result.saveToFile(fn);
+        });
+    }
 }