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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.
87 lines
2.9 KiB
C++
87 lines
2.9 KiB
C++
/*
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* Copyright (c) 2020, the SerenityOS developers.
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* Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibGUI/Event.h>
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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/MouseEvent.h>
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namespace Web::UIEvents {
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MouseEvent::MouseEvent(JS::Realm& realm, FlyString const& event_name, MouseEventInit const& event_init)
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: UIEvent(realm, event_name, event_init)
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, m_offset_x(event_init.offset_x)
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, m_offset_y(event_init.offset_y)
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, m_client_x(event_init.client_x)
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, m_client_y(event_init.client_y)
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, m_page_x(event_init.page_x)
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, m_page_y(event_init.page_y)
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, m_button(event_init.button)
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, m_buttons(event_init.buttons)
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{
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set_event_characteristics();
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}
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MouseEvent::~MouseEvent() = default;
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JS::ThrowCompletionOr<void> MouseEvent::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::MouseEventPrototype>(realm, "MouseEvent"));
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return {};
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}
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// https://www.w3.org/TR/uievents/#dom-mouseevent-button
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static i16 determine_button(unsigned mouse_button)
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{
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switch (mouse_button) {
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case GUI::MouseButton::Primary:
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return 0;
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case GUI::MouseButton::Middle:
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return 1;
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case GUI::MouseButton::Secondary:
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return 2;
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case GUI::MouseButton::Backward:
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return 3;
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case GUI::MouseButton::Forward:
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return 4;
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default:
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VERIFY_NOT_REACHED();
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}
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}
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WebIDL::ExceptionOr<JS::NonnullGCPtr<MouseEvent>> MouseEvent::create(JS::Realm& realm, FlyString const& event_name, MouseEventInit const& event_init)
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{
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return MUST_OR_THROW_OOM(realm.heap().allocate<MouseEvent>(realm, realm, event_name, event_init));
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}
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WebIDL::ExceptionOr<JS::NonnullGCPtr<MouseEvent>> MouseEvent::create_from_platform_event(JS::Realm& realm, FlyString const& event_name, CSSPixelPoint offset, CSSPixelPoint client_offset, CSSPixelPoint page_offset, unsigned buttons, unsigned mouse_button)
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{
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MouseEventInit 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_offset.x().to_double();
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event_init.client_y = client_offset.y().to_double();
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event_init.page_x = page_offset.x().to_double();
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event_init.page_y = page_offset.y().to_double();
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event_init.button = determine_button(mouse_button);
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event_init.buttons = buttons;
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return MouseEvent::create(realm, event_name, event_init);
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}
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void MouseEvent::set_event_characteristics()
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{
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if (type().is_one_of(EventNames::mousedown, EventNames::mousemove, EventNames::mouseout, EventNames::mouseover, EventNames::mouseup, HTML::EventNames::click, EventNames::dblclick, EventNames::contextmenu)) {
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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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}
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