content/browser/renderer_host/input/synthetic_gesture_target_base.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_RENDERER_HOST_INPUT_SYNTHETIC_GESTURE_TARGET_BASE_H_
   6 #define CONTENT_BROWSER_RENDERER_HOST_INPUT_SYNTHETIC_GESTURE_TARGET_BASE_H_
   7
   8 #include "base/time/time.h"
   9 #include "content/browser/renderer_host/input/synthetic_gesture_target.h"
  10
  11 namespace ui {
  12 struct LatencyInfo;
  13 }
  14
  15 namespace blink {
  16 class WebTouchEvent;
  17 class WebMouseEvent;
  18 class WebMouseWheelEvent;
  19 }
  20
  21 namespace content {
  22
  23 class RenderWidgetHostImpl;
  24
  25 class SyntheticGestureTargetBase : public SyntheticGestureTarget {
  26  public:
  27   explicit SyntheticGestureTargetBase(RenderWidgetHostImpl* host);
  28   ~SyntheticGestureTargetBase() override;
  29
  30   virtual void DispatchWebTouchEventToPlatform(
  31       const blink::WebTouchEvent& web_touch,
  32       const ui::LatencyInfo& latency_info);
  33
  34   virtual void DispatchWebMouseWheelEventToPlatform(
  35       const blink::WebMouseWheelEvent& web_wheel,
  36       const ui::LatencyInfo& latency_info);
  37
  38   virtual void DispatchWebMouseEventToPlatform(
  39       const blink::WebMouseEvent& web_mouse,
  40       const ui::LatencyInfo& latency_info);
  41
  42   // SyntheticGestureTarget:
  43   void DispatchInputEventToPlatform(const blink::WebInputEvent& event) override;
  44
  45   void SetNeedsFlush() override;
  46
  47   SyntheticGestureParams::GestureSourceType
  48   GetDefaultSyntheticGestureSourceType() const override;
  49
  50   base::TimeDelta PointerAssumedStoppedTime() const override;
  51
  52   float GetTouchSlopInDips() const override;
  53
  54   float GetMinScalingSpanInDips() const override;
  55
  56  protected:
  57   RenderWidgetHostImpl* render_widget_host() const { return host_; }
  58
  59  private:
  60   bool PointIsWithinContents(int x, int y) const;
  61
  62   RenderWidgetHostImpl* host_;
  63
  64   DISALLOW_COPY_AND_ASSIGN(SyntheticGestureTargetBase);
  65 };
  66
  67 }  // namespace content
  68
  69 #endif  // CONTENT_BROWSER_RENDERER_HOST_INPUT_SYNTHETIC_GESTURE_TARGET_BASE_H_