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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_EVENTS_GESTURES_BLINK_WEB_GESTURE_CURVE_IMPL_H_
#define UI_EVENTS_GESTURES_BLINK_WEB_GESTURE_CURVE_IMPL_H_
#include <stdint.h>
#include <memory>
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "third_party/blink/public/platform/web_gesture_curve.h"
#include "third_party/blink/public/platform/web_gesture_device.h"
#include "ui/gfx/geometry/vector2d_f.h"
namespace ui {
class GestureCurve;
class WebGestureCurveImpl : public blink::WebGestureCurve {
public:
static std::unique_ptr<blink::WebGestureCurve> CreateFromDefaultPlatformCurve(
blink::WebGestureDevice device_source,
const gfx::Vector2dF& initial_velocity,
const gfx::Vector2dF& initial_offset,
bool on_main_thread);
static std::unique_ptr<blink::WebGestureCurve> CreateFromUICurveForTesting(
std::unique_ptr<GestureCurve> curve,
const gfx::Vector2dF& initial_offset);
~WebGestureCurveImpl() override;
// WebGestureCurve implementation.
bool Advance(double time,
gfx::Vector2dF& out_current_velocity,
gfx::Vector2dF& out_delta_to_scroll) override;
private:
enum class ThreadType {
MAIN,
IMPL,
TEST
};
WebGestureCurveImpl(std::unique_ptr<GestureCurve> curve,
const gfx::Vector2dF& initial_offset,
ThreadType animating_thread_type);
std::unique_ptr<GestureCurve> curve_;
gfx::Vector2dF last_offset_;
int64_t ticks_since_first_animate_;
double first_animate_time_;
double last_animate_time_;
DISALLOW_COPY_AND_ASSIGN(WebGestureCurveImpl);
};
} // namespace ui
#endif // UI_EVENTS_GESTURES_BLINK_WEB_GESTURE_CURVE_IMPL_H_
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