1
    2
    3
    4
    5
    6
    7
    8
    9
   10
   11
   12
   13
   14
   15
   16
   17
   18
   19
   20
   21
   22
   23
   24
   25
   26
   27
   28
   29
   30
   31
   32
   33
   34
   35
   36
   37
   38
   39
   40
   41
   42
   43
   44
   45
   46
   47
   48
   49
   50
   51
   52
   53
   54
   55
   56
   57
   58
   59
   60
   61
   62
   63
   64
   65
   66
   67
   68
   69
   70
   71
   72
   73
   74
   75
   76
   77
   78
   79
   80
   81
   82
   83
   84
   85
   86
   87
   88


content / browser / renderer_host / input / synthetic_gesture_target_aura.h [blame]

// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_RENDERER_HOST_INPUT_SYNTHETIC_GESTURE_TARGET_AURA_H_
#define CONTENT_BROWSER_RENDERER_HOST_INPUT_SYNTHETIC_GESTURE_TARGET_AURA_H_

#include "content/browser/renderer_host/input/synthetic_gesture_target_base.h"
#include "content/browser/renderer_host/render_widget_host_view_aura.h"
#include "content/common/input/synthetic_gesture_params.h"
#include "ui/aura/event_injector.h"
#include "ui/compositor/host_begin_frame_observer.h"

namespace aura {
class Window;
}  // namespace aura

namespace content {

// SyntheticGestureTarget implementation for aura
class SyntheticGestureTargetAura
    : public SyntheticGestureTargetBase,
      public ui::HostBeginFrameObserver::SimpleBeginFrameObserver {
 public:
  explicit SyntheticGestureTargetAura(RenderWidgetHostImpl* host);

  SyntheticGestureTargetAura(const SyntheticGestureTargetAura&) = delete;
  ~SyntheticGestureTargetAura() override;
  SyntheticGestureTargetAura& operator=(const SyntheticGestureTargetAura&) =
      delete;

  // SyntheticGestureTargetBase:
  void DispatchWebTouchEventToPlatform(
      const blink::WebTouchEvent& web_touch,
      const ui::LatencyInfo& latency_info) override;
  void DispatchWebMouseWheelEventToPlatform(
      const blink::WebMouseWheelEvent& web_wheel,
      const ui::LatencyInfo& latency_info) override;
  void DispatchWebGestureEventToPlatform(
      const blink::WebGestureEvent& web_gesture,
      const ui::LatencyInfo& latency_info) override;
  void DispatchWebMouseEventToPlatform(
      const blink::WebMouseEvent& web_mouse,
      const ui::LatencyInfo& latency_info) override;

  // SyntheticGestureTarget:
  content::mojom::GestureSourceType GetDefaultSyntheticGestureSourceType()
      const override;

  void GetVSyncParameters(base::TimeTicks& timebase,
                          base::TimeDelta& interval) const override;

  float GetTouchSlopInDips() const override;

  float GetSpanSlopInDips() const override;

  float GetMinScalingSpanInDips() const override;

 private:
  // ui::HostBeginFrameObserver::SimpleBeginFrameObserver:
  void OnBeginFrame(base::TimeTicks frame_begin_time,
                    base::TimeDelta frame_interval) override;
  void OnBeginFrameSourceShuttingDown() override;

  RenderWidgetHostViewAura* GetView() const;
  aura::Window* GetWindow() const;

  // Synthetic located event's location and touch event's radius are in DIP and
  // aura event dispatcher assumes input event is in device pixel and will apply
  // device scale factor to convert the input to DIP. So we need to use
  // device_scale_factor to convert the input event from DIP to device pixel
  // before dispatching it into platform.
  float device_scale_factor_;

  float wheel_precision_x_ = 0.f;
  float wheel_precision_y_ = 0.f;

  aura::EventInjector event_injector_;

  base::TimeTicks vsync_timebase_;
  base::TimeDelta vsync_interval_{base::Microseconds(16667)};

  raw_ptr<ui::Compositor> observed_compositor_;
};

}  // namespace content

#endif  // CONTENT_BROWSER_RENDERER_HOST_INPUT_SYNTHETIC_GESTURE_TARGET_AURA_H_