content/child/web_gesture_curve_impl.h

   1 // Copyright 2014 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_CHILD_WEB_GESTURE_CURVE_IMPL_H_
   6 #define CONTENT_CHILD_WEB_GESTURE_CURVE_IMPL_H_
   7
   8 #include "base/macros.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "content/common/content_export.h"
  11 #include "third_party/WebKit/public/platform/WebGestureCurve.h"
  12 #include "ui/gfx/geometry/vector2d_f.h"
  13
  14 namespace blink {
  15 class WebGestureCurveTarget;
  16 }
  17
  18 namespace ui {
  19 class GestureCurve;
  20 }
  21
  22 namespace content {
  23
  24 class CONTENT_EXPORT WebGestureCurveImpl
  25     : public NON_EXPORTED_BASE(blink::WebGestureCurve) {
  26  public:
  27   static scoped_ptr<blink::WebGestureCurve> CreateFromDefaultPlatformCurve(
  28       const gfx::Vector2dF& initial_velocity,
  29       const gfx::Vector2dF& initial_offset);
  30   static scoped_ptr<blink::WebGestureCurve> CreateFrom(
  31       scoped_ptr<ui::GestureCurve> curve,
  32       const gfx::Vector2dF& initial_offset);
  33
  34   virtual ~WebGestureCurveImpl();
  35
  36   // WebGestureCurve implementation.
  37   virtual bool apply(double time,
  38                      blink::WebGestureCurveTarget* target) override;
  39
  40  private:
  41   WebGestureCurveImpl(scoped_ptr<ui::GestureCurve> curve,
  42                       const gfx::Vector2dF& initial_offset);
  43
  44   scoped_ptr<ui::GestureCurve> curve_;
  45
  46   gfx::Vector2dF last_offset_;
  47
  48   DISALLOW_COPY_AND_ASSIGN(WebGestureCurveImpl);
  49 };
  50
  51 }  // namespace content
  52
  53 #endif  // CONTENT_CHILD_WEB_GESTURE_CURVE_IMPL_H_