diff options
Diffstat (limited to 'src/core/render_widget_host_view_qt.cpp')
| -rw-r--r-- | src/core/render_widget_host_view_qt.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/core/render_widget_host_view_qt.cpp b/src/core/render_widget_host_view_qt.cpp index 26ea4f4ae..bf0e80be9 100644 --- a/src/core/render_widget_host_view_qt.cpp +++ b/src/core/render_widget_host_view_qt.cpp @@ -628,6 +628,7 @@ bool RenderWidgetHostViewQt::HasAcceleratedSurface(const gfx::Size&) void RenderWidgetHostViewQt::OnSwapCompositorFrame(uint32 output_surface_id, scoped_ptr<cc::CompositorFrame> frame) { + bool scrollOffsetChanged = (m_lastScrollOffset != frame->metadata.root_scroll_offset); m_lastScrollOffset = frame->metadata.root_scroll_offset; Q_ASSERT(!m_needsDelegatedFrameAck); m_needsDelegatedFrameAck = true; @@ -648,6 +649,9 @@ void RenderWidgetHostViewQt::OnSwapCompositorFrame(uint32 output_surface_id, sco m_adapterClient->loadVisuallyCommitted(); m_didFirstVisuallyNonEmptyLayout = false; } + + if (scrollOffsetChanged) + m_adapterClient->updateScrollPosition(toQt(m_lastScrollOffset)); } void RenderWidgetHostViewQt::GetScreenInfo(blink::WebScreenInfo* results) |