| // Copyright 2015 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_state.h" |
| |
| #include <utility> |
| |
| #include "cc/trees/scroll_node.h" |
| |
| namespace cc { |
| |
| ScrollState::ScrollState(ScrollStateData data) : data_(data) {} |
| |
| ScrollState::ScrollState(const ScrollState& other) = default; |
| |
| ScrollState::~ScrollState() = default; |
| |
| 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; |
| } |
| |
| gfx::Vector2dF ScrollState::DeltaOrHint() const { |
| if (is_beginning()) |
| return gfx::Vector2dF(delta_x_hint(), delta_y_hint()); |
| |
| return gfx::Vector2dF(delta_x(), delta_y()); |
| } |
| |
| } // namespace cc |