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/*
* Copyright (c) 2022, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibWeb/UIEvents/MouseEvent.h>
#include <LibWeb/UIEvents/UIEvent.h>
namespace Web::UIEvents {
enum class WheelDeltaMode : unsigned long {
DOM_DELTA_PIXEL = 0,
DOM_DELTA_LINE = 1,
DOM_DELTA_PAGE = 2,
};
struct WheelEventInit : public MouseEventInit {
double delta_x = 0;
double delta_y = 0;
double delta_z = 0;
WheelDeltaMode delta_mode = WheelDeltaMode::DOM_DELTA_PIXEL;
};
class WheelEvent final : public MouseEvent {
WEB_PLATFORM_OBJECT(WheelEvent, MouseEvent);
public:
static WebIDL::ExceptionOr<JS::NonnullGCPtr<WheelEvent>> create(JS::Realm&, DeprecatedFlyString const& event_name, WheelEventInit const& event_init = {});
static WebIDL::ExceptionOr<JS::NonnullGCPtr<WheelEvent>> create_from_platform_event(JS::Realm&, DeprecatedFlyString const& event_name, CSSPixels offset_x, CSSPixels offset_y, CSSPixels client_x, CSSPixels client_y, double delta_x, double delta_y, unsigned buttons, unsigned button);
virtual ~WheelEvent() override;
double delta_x() const { return m_delta_x; }
double delta_y() const { return m_delta_y; }
double delta_z() const { return m_delta_z; }
unsigned long delta_mode() const { return to_underlying(m_delta_mode); }
private:
WheelEvent(JS::Realm&, DeprecatedFlyString const& event_name, WheelEventInit const& event_init);
virtual JS::ThrowCompletionOr<void> initialize(JS::Realm&) override;
void set_event_characteristics();
double m_delta_x { 0 };
double m_delta_y { 0 };
double m_delta_z { 0 };
WheelDeltaMode m_delta_mode { WheelDeltaMode::DOM_DELTA_PIXEL };
};
}
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