Quick: Support reparenting

To support reparenting, we make the compositing surface independent of
the window by using gfx::TEXTURE_TRANSPORT. We also need to be able to
keep frame data across window changes so we can reconstruct the QSGNode
tree in a new context, so extract that data into DelegatedFrameNodeData
class. Any context-specific data is still stored in DelegatedFrameNode.

Also hook up window changes to WebContents::WasShown/Hidden for Quick.
Remove checking of Qt isVisible state, this mechanism is used to sync
Chromium with Qt, not the other way around. WasShown/Hidden is
orthogonal to Show/Hide, and can use different triggers. However for
Widgets it probably makes sense to hook both up to widget visibility.

Change-Id: I1ef4b50cd61b8e54b791e03f0b41929c42fec8bf
Reviewed-by: Jocelyn Turcotte <jocelyn.turcotte@digia.com>

1 files changed, 5 insertions, 6 deletions

diff --git a/src/webenginewidgets/render_widget_host_view_qt_delegate_widget.cpp b/src/webenginewidgets/render_widget_host_view_qt_delegate_widget.cpp
index c7b831853..d0bc44a5b 100644
--- a/src/webenginewidgets/render_widget_host_view_qt_delegate_widget.cpp
+++ b/src/webenginewidgets/render_widget_host_view_qt_delegate_widget.cpp
@@ -111,12 +111,6 @@ bool RenderWidgetHostViewQtDelegateWidget::isVisible() const
     return QWidget::isVisible();
 }
 
-WId RenderWidgetHostViewQtDelegateWidget::nativeWindowIdForCompositor() const
-{
-    // The QtWidgets API doesn't support hardware acceleration.
-    return 0;
-}
-
 QWindow* RenderWidgetHostViewQtDelegateWidget::window() const
 {
     const QWidget* root = QWidget::window();
@@ -153,6 +147,11 @@ QVariant RenderWidgetHostViewQtDelegateWidget::inputMethodQuery(Qt::InputMethodQ
     return m_client->inputMethodQuery(query);
 }
 
+bool RenderWidgetHostViewQtDelegateWidget::supportsHardwareAcceleration() const
+{
+    return false;
+}
+
 void RenderWidgetHostViewQtDelegateWidget::paintEvent(QPaintEvent * event)
 {
     QPainter painter(this);