blob: aa0baf16252f262322eeba5b61b6f96f8a4809e0 [file] [log] [blame]
// Copyright 2015 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.
#include "cc/input/scroll_state.h"
#include <utility>
#include "cc/trees/layer_tree_impl.h"
namespace cc {
ScrollState::ScrollState(ScrollStateData data) : data_(data) {}
ScrollState::ScrollState(const ScrollState& other) = default;
ScrollState::~ScrollState() {}
void ScrollState::ConsumeDelta(double x, double y) {
data_.delta_x -= x;
data_.delta_y -= y;
if (x || y)
data_.delta_consumed_for_scroll_sequence = true;
}
void ScrollState::DistributeToScrollChainDescendant() {
if (!scroll_chain_.empty()) {
const ScrollNode* next = scroll_chain_.front();
scroll_chain_.pop_front();
layer_tree_impl_->LayerById(next->owner_id)->DistributeScroll(this);
}
}
} // namespace cc