chromium/components/input/render_widget_host_input_event_router.h

// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_INPUT_RENDER_WIDGET_HOST_INPUT_EVENT_ROUTER_H_
#define COMPONENTS_INPUT_RENDER_WIDGET_HOST_INPUT_EVENT_ROUTER_H_

#include <stdint.h>

#include <map>
#include <unordered_map>
#include <vector>

#include "base/gtest_prod_util.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "components/input/event_with_latency_info.h"
#include "components/viz/common/hit_test/hit_test_query.h"
#include "components/viz/common/hit_test/hit_test_region_observer.h"
#include "components/viz/common/surfaces/surface_id.h"
#include "base/component_export.h"
#include "components/input/render_widget_host_view_input_observer.h"
#include "components/input/render_widget_targeter.h"
#include "components/input/touch_emulator_client.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "third_party/blink/public/mojom/input/input_event_result.mojom-shared.h"
#include "ui/gfx/geometry/transform.h"
#include "ui/gfx/geometry/vector2d_conversions.h"
#include "ui/gfx/mojom/delegated_ink_point_renderer.mojom.h"

namespace blink {
class WebGestureEvent;
class WebInputEvent;
class WebMouseEvent;
class WebMouseWheelEvent;
class WebPointerProperties;
class WebTouchEvent;
}

namespace gfx {
class Point;
class PointF;
}

content  // namespace content

namespace ui {
class LatencyInfo;
}

namespace viz {
class HitTestDataProvider;
}

namespace input {

class RenderWidgetHostViewInput;
class RenderWidgetTargeter;
class TouchEmulator;
class TouchEventAckQueue;

// Helper method also used from hit_test_debug_key_event_observer.cc
viz::HitTestQuery* GetHitTestQuery(viz::HitTestDataProvider* provider,
                                   const viz::FrameSinkId& frame_sink_id);

// Class owned by WebContentsImpl for the purpose of directing input events
// to the correct RenderWidgetHost on pages with multiple RenderWidgetHosts.
// It maintains a mapping of RenderWidgetHostViews to Surface IDs that they
// own. When an input event requires routing based on window coordinates,
// this class requests a Surface hit test from the provided |root_view| and
// forwards the event to the owning RWHV of the returned Surface ID.
class COMPONENT_EXPORT(INPUT) RenderWidgetHostInputEventRouter final
    : public RenderWidgetHostViewInputObserver,
      public RenderWidgetTargeter::Delegate,
      public TouchEmulatorClient,
      public viz::HitTestRegionObserver { … };

}  // namespace input

#endif  // COMPONENTS_INPUT_RENDER_WIDGET_HOST_INPUT_EVENT_ROUTER_H_