chromium/ui/events/gestures/blink/web_gesture_curve_impl.cc

// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ui/events/gestures/blink/web_gesture_curve_impl.h"

#include <limits.h>

#include <utility>

#include "base/metrics/histogram_macros.h"
#include "build/build_config.h"
#include "ui/base/ui_base_features.h"
#include "ui/events/gestures/fixed_velocity_curve.h"
#include "ui/events/gestures/fling_curve.h"
#include "ui/events/gestures/physics_based_fling_curve.h"
#include "ui/events/mobile_scroller.h"

WebGestureCurve;

namespace ui {
namespace {

std::unique_ptr<GestureCurve> CreateDefaultPlatformCurve(
    blink::WebGestureDevice device_source,
    const gfx::Vector2dF& initial_velocity,
    bool use_mobile_fling_curve,
    const gfx::Vector2dF& pixels_per_inch,
    const float boost_multiplier,
    const gfx::Size& bounding_size) { … }

}  // namespace

// static
std::unique_ptr<WebGestureCurve>
WebGestureCurveImpl::CreateFromDefaultPlatformCurve(
    blink::WebGestureDevice device_source,
    const gfx::Vector2dF& initial_velocity,
    const gfx::Vector2dF& initial_offset,
    bool on_main_thread,
    bool use_mobile_fling_curve,
    const gfx::Vector2dF& pixels_per_inch,
    const float boost_multiplier,
    const gfx::Size& viewport_size) { … }

// static
std::unique_ptr<WebGestureCurve>
WebGestureCurveImpl::CreateFromUICurveForTesting(
    std::unique_ptr<GestureCurve> curve,
    const gfx::Vector2dF& initial_offset) { … }

WebGestureCurveImpl::WebGestureCurveImpl(std::unique_ptr<GestureCurve> curve,
                                         const gfx::Vector2dF& initial_offset,
                                         ThreadType animating_thread_type)
    : … { … }

WebGestureCurveImpl::~WebGestureCurveImpl() { … }

bool WebGestureCurveImpl::Advance(double time,
                                  gfx::Vector2dF& out_current_velocity,
                                  gfx::Vector2dF& out_delta_to_scroll) { … }

}  // namespace ui