From 4267567f5366b237c763d1b93cd09501a483a070 Mon Sep 17 00:00:00 2001 From: Allan Sandfeld Jensen Date: Tue, 24 Oct 2017 16:30:31 +0200 Subject: Coalesce wheel events when possible MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Combine wheel events if we are getting more than Chromium can handle. This improves latency and perceived performance when scrolling with touchpads or fine-grained mouse, on a slow machine or with a debug build. Change-Id: Id847c8e7782e155c28067b6051ce92896b68ca7a Reviewed-by: Michael Brüning --- src/core/render_widget_host_view_qt.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'src/core/render_widget_host_view_qt.h') diff --git a/src/core/render_widget_host_view_qt.h b/src/core/render_widget_host_view_qt.h index 59e21b853..4b7f9094e 100644 --- a/src/core/render_widget_host_view_qt.h +++ b/src/core/render_widget_host_view_qt.h @@ -152,6 +152,7 @@ public: bool HasAcceleratedSurface(const gfx::Size&) override; void DidCreateNewRendererCompositorFrameSink(cc::mojom::CompositorFrameSinkClient* renderer_compositor_frame_sink) override; void SubmitCompositorFrame(const viz::LocalSurfaceId&, cc::CompositorFrame) override; + void WheelEventAck(const blink::WebMouseWheelEvent &event, content::InputEventAckState ack_result) override; void GetScreenInfo(content::ScreenInfo* results); gfx::Rect GetBoundsInRootWindow() override; @@ -270,6 +271,9 @@ private: QString m_surroundingText; bool m_imeHasHiddenTextCapability; + + bool m_wheelAckPending; + QList m_pendingWheelEvents; }; } // namespace QtWebEngineCore -- cgit v1.2.3