mirror of
https://github.com/RGBCube/serenity
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147c3b3d97
Although DistinctNumeric, which is supposed to abstract the underlying type, was used to represent CSSPixels, we have a whole bunch of places in the layout code that assume CSSPixels::value() returns a floating-point type. This assumption makes it difficult to replace the underlying type in CSSPixels with a non-floating type. To make it easier to transition CSSPixels to fixed-point math, one step we can take is to prevent access to the underlying type using value() and instead use explicit conversions with the to_float(), to_double(), and to_int() methods.
61 lines
2 KiB
C++
61 lines
2 KiB
C++
/*
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* Copyright (c) 2022, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/HTML/EventNames.h>
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#include <LibWeb/UIEvents/EventNames.h>
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#include <LibWeb/UIEvents/WheelEvent.h>
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#include <LibWeb/WebIDL/ExceptionOr.h>
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namespace Web::UIEvents {
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WheelEvent::WheelEvent(JS::Realm& realm, FlyString const& event_name, WheelEventInit const& event_init)
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: MouseEvent(realm, event_name, event_init)
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, m_delta_x(event_init.delta_x)
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, m_delta_y(event_init.delta_y)
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, m_delta_mode(event_init.delta_mode)
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{
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set_event_characteristics();
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}
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WheelEvent::~WheelEvent() = default;
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JS::ThrowCompletionOr<void> WheelEvent::initialize(JS::Realm& realm)
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{
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MUST_OR_THROW_OOM(Base::initialize(realm));
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set_prototype(&Bindings::ensure_web_prototype<Bindings::WheelEventPrototype>(realm, "WheelEvent"));
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return {};
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}
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WebIDL::ExceptionOr<JS::NonnullGCPtr<WheelEvent>> WheelEvent::create(JS::Realm& realm, FlyString const& event_name, WheelEventInit const& event_init)
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{
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return MUST_OR_THROW_OOM(realm.heap().allocate<WheelEvent>(realm, realm, event_name, event_init));
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}
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WebIDL::ExceptionOr<JS::NonnullGCPtr<WheelEvent>> WheelEvent::create_from_platform_event(JS::Realm& realm, FlyString 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)
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{
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WheelEventInit event_init {};
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event_init.offset_x = offset_x.to_double();
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event_init.offset_y = offset_y.to_double();
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event_init.client_x = client_x.to_double();
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event_init.client_y = client_y.to_double();
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event_init.button = button;
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event_init.buttons = buttons;
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event_init.delta_x = delta_x;
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event_init.delta_y = delta_y;
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event_init.delta_mode = WheelDeltaMode::DOM_DELTA_PIXEL;
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return WheelEvent::create(realm, event_name, event_init);
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}
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void WheelEvent::set_event_characteristics()
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{
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set_bubbles(true);
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set_cancelable(true);
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set_composed(true);
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}
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}
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