WebEngineView does not load a url while invisible

Notify the RenderWidgetHost about visibility changes so that we
receive updates with non-empty DelegatedFrameData when a page was
loaded in an invisible WebEngineView and then made visible.

Task-number: QTBUG-42789
Change-Id: I4856efcd9c0ce44b66a228d5a414198df46b95eb
Reviewed-by: Michael Brüning <michael.bruning@theqtcompany.com>

3 files changed, 14 insertions, 0 deletions

diff --git a/src/core/render_widget_host_view_qt.cpp b/src/core/render_widget_host_view_qt.cpp
index 0f9286252..572bc340c 100644
--- a/src/core/render_widget_host_view_qt.cpp
+++ b/src/core/render_widget_host_view_qt.cpp
@@ -715,6 +715,16 @@ void RenderWidgetHostViewQt::notifyResize()
     m_host->WasResized();
 }
 
+void RenderWidgetHostViewQt::notifyShown()
+{
+    WasShown();
+}
+
+void RenderWidgetHostViewQt::notifyHidden()
+{
+    WasHidden();
+}
+
 void RenderWidgetHostViewQt::windowBoundsChanged()
 {
     m_host->SendScreenRects();
diff --git a/src/core/render_widget_host_view_qt.h b/src/core/render_widget_host_view_qt.h
index 68330a486..248c52f6e 100644
--- a/src/core/render_widget_host_view_qt.h
+++ b/src/core/render_widget_host_view_qt.h
@@ -159,6 +159,8 @@ public:
     // Overridden from RenderWidgetHostViewQtDelegateClient.
     virtual QSGNode *updatePaintNode(QSGNode *) Q_DECL_OVERRIDE;
     virtual void notifyResize() Q_DECL_OVERRIDE;
+    virtual void notifyShown() Q_DECL_OVERRIDE;
+    virtual void notifyHidden() Q_DECL_OVERRIDE;
     virtual void windowBoundsChanged() Q_DECL_OVERRIDE;
     virtual void windowChanged() Q_DECL_OVERRIDE;
     virtual bool forwardEvent(QEvent *) Q_DECL_OVERRIDE;
diff --git a/src/core/render_widget_host_view_qt_delegate.h b/src/core/render_widget_host_view_qt_delegate.h
index a12f3055e..da595b91f 100644
--- a/src/core/render_widget_host_view_qt_delegate.h
+++ b/src/core/render_widget_host_view_qt_delegate.h
@@ -64,6 +64,8 @@ public:
     virtual ~RenderWidgetHostViewQtDelegateClient() { }
     virtual QSGNode *updatePaintNode(QSGNode *) = 0;
     virtual void notifyResize() = 0;
+    virtual void notifyShown() = 0;
+    virtual void notifyHidden() = 0;
     virtual void windowBoundsChanged() = 0;
     virtual void windowChanged() = 0;
     virtual bool forwardEvent(QEvent *) = 0;