| // Copyright 2017 Google Inc. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef COBALT_DOM_WHEEL_EVENT_H_ |
| #define COBALT_DOM_WHEEL_EVENT_H_ |
| |
| #include <string> |
| |
| #include "cobalt/base/token.h" |
| #include "cobalt/dom/mouse_event.h" |
| #include "cobalt/dom/wheel_event_init.h" |
| |
| namespace cobalt { |
| namespace dom { |
| |
| // The WheelEvent provides specific contextual information associated with |
| // wheel devices. Wheels are devices that can be rotated in one or more spatial |
| // dimensions, and which can be associated with a pointer device |
| // https://www.w3.org/TR/2016/WD-uievents-20160804/#events-wheelevents |
| class WheelEvent : public MouseEvent { |
| public: |
| // Web API: WheelEvent |
| // DeltaMode values as defined by Web API Node.nodeType. |
| typedef uint32 DeltaMode; // Work around lack of strongly-typed enums |
| // in C++03. |
| enum DeltaModeInternal { // A name is given only to pacify the compiler. |
| // Use |DeltaMode| instead. |
| kDomDeltaPixel = 0x00, |
| kDomDeltaLine = 0x01, |
| kDomDeltaPage = 0x02, |
| }; |
| |
| explicit WheelEvent(const std::string& type); |
| WheelEvent(const std::string& type, const WheelEventInit& init_dict); |
| WheelEvent(base::Token type, const scoped_refptr<Window>& view, |
| const WheelEventInit& init_dict); |
| |
| double delta_x() const { return delta_x_; } |
| double delta_y() const { return delta_y_; } |
| double delta_z() const { return delta_z_; } |
| DeltaMode delta_mode() const { return delta_mode_; } |
| |
| void InitWheelEvent(const std::string& type, bool bubbles, bool cancelable, |
| const scoped_refptr<Window>& view, int32 detail, |
| int32 screen_x, int32 screen_y, int32 client_x, |
| int32 client_y, uint16 button, |
| const scoped_refptr<EventTarget>& related_target, |
| const std::string& modifierslist, double delta_x, |
| double delta_y, double delta_z, uint32 delta_mode); |
| |
| DEFINE_WRAPPABLE_TYPE(WheelEvent); |
| |
| private: |
| double delta_x_; |
| double delta_y_; |
| double delta_z_; |
| DeltaMode delta_mode_; |
| |
| ~WheelEvent() OVERRIDE {} |
| }; |
| |
| } // namespace dom |
| } // namespace cobalt |
| |
| #endif // COBALT_DOM_WHEEL_EVENT_H_ |