chromium/cc/input/scroll_elasticity_helper.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 "cc/input/scroll_elasticity_helper.h"

#include "base/memory/raw_ptr.h"
#include "cc/layers/layer_impl.h"
#include "cc/trees/layer_tree_host_impl.h"
#include "cc/trees/layer_tree_impl.h"
#include "cc/trees/scroll_node.h"

namespace cc {

class ScrollElasticityHelperImpl : public ScrollElasticityHelper { … };

ScrollElasticityHelperImpl::ScrollElasticityHelperImpl(
    LayerTreeHostImpl* layer_tree)
    : … { … }

ScrollElasticityHelperImpl::~ScrollElasticityHelperImpl() = default;

bool ScrollElasticityHelperImpl::IsUserScrollableHorizontal() const { … }

bool ScrollElasticityHelperImpl::IsUserScrollableVertical() const { … }

gfx::Vector2dF ScrollElasticityHelperImpl::StretchAmount() const { … }

gfx::Size ScrollElasticityHelperImpl::ScrollBounds() const { … }

void ScrollElasticityHelperImpl::SetStretchAmount(
    const gfx::Vector2dF& stretch_amount) { … }

gfx::PointF ScrollElasticityHelperImpl::ScrollOffset() const { … }

gfx::PointF ScrollElasticityHelperImpl::MaxScrollOffset() const { … }

void ScrollElasticityHelperImpl::ScrollBy(const gfx::Vector2dF& delta) { … }

void ScrollElasticityHelperImpl::RequestOneBeginFrame() { … }

// static
ScrollElasticityHelper* ScrollElasticityHelper::CreateForLayerTreeHostImpl(
    LayerTreeHostImpl* host_impl) { … }

}  // namespace cc