| // Copyright 2018 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 ScrollCustomization_h |
| #define ScrollCustomization_h |
| |
| #include <stdint.h> |
| |
| #include "platform/PlatformExport.h" |
| |
| namespace blink { |
| namespace ScrollCustomization { |
| using ScrollDirection = uint8_t; |
| |
| constexpr ScrollDirection kScrollDirectionNone = 0; |
| constexpr ScrollDirection kScrollDirectionPanLeft = 1 << 0; |
| constexpr ScrollDirection kScrollDirectionPanRight = 1 << 1; |
| constexpr ScrollDirection kScrollDirectionPanX = |
| kScrollDirectionPanLeft | kScrollDirectionPanRight; |
| constexpr ScrollDirection kScrollDirectionPanUp = 1 << 2; |
| constexpr ScrollDirection kScrollDirectionPanDown = 1 << 3; |
| constexpr ScrollDirection kScrollDirectionPanY = |
| kScrollDirectionPanUp | kScrollDirectionPanDown; |
| constexpr ScrollDirection kScrollDirectionAuto = |
| kScrollDirectionPanX | kScrollDirectionPanY; |
| |
| PLATFORM_EXPORT ScrollDirection GetScrollDirectionFromDeltas(double delta_x, |
| double delta_y); |
| } // namespace ScrollCustomization |
| } // namespace blink |
| |
| #endif // ScrollCustomization_h |
