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serenity/Userland/Libraries/LibWeb/UIEvents/MouseEvent.cpp
Andreas Kling ffad902c07 LibWeb: Use cached_web_prototype() as much as possible
Unlike ensure_web_prototype<T>(), the cached version doesn't require the
prototype type to be fully formed, so we can use it without including
the FooPrototype.h header. It's also a bit less verbose. :^)
2022-09-06 00:27:09 +02:00

74 lines
2.3 KiB
C++

/*
* Copyright (c) 2020, the SerenityOS developers.
* Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibGUI/Event.h>
#include <LibWeb/HTML/EventNames.h>
#include <LibWeb/HTML/Window.h>
#include <LibWeb/UIEvents/EventNames.h>
#include <LibWeb/UIEvents/MouseEvent.h>
namespace Web::UIEvents {
MouseEvent::MouseEvent(HTML::Window& window_object, FlyString const& event_name, MouseEventInit const& event_init)
: UIEvent(window_object, event_name, event_init)
, m_offset_x(event_init.offset_x)
, m_offset_y(event_init.offset_y)
, m_client_x(event_init.client_x)
, m_client_y(event_init.client_y)
, m_button(event_init.button)
{
set_prototype(&window_object.cached_web_prototype("MouseEvent"));
set_event_characteristics();
}
MouseEvent::~MouseEvent() = default;
// https://www.w3.org/TR/uievents/#dom-mouseevent-button
static i16 determine_button(unsigned mouse_button)
{
switch (mouse_button) {
case GUI::MouseButton::Primary:
return 0;
case GUI::MouseButton::Middle:
return 1;
case GUI::MouseButton::Secondary:
return 2;
case GUI::MouseButton::Backward:
return 3;
case GUI::MouseButton::Forward:
return 4;
default:
VERIFY_NOT_REACHED();
}
}
MouseEvent* MouseEvent::create(HTML::Window& window_object, FlyString const& event_name, MouseEventInit const& event_init)
{
return window_object.heap().allocate<MouseEvent>(window_object.realm(), window_object, event_name, event_init);
}
MouseEvent* MouseEvent::create_from_platform_event(HTML::Window& window_object, FlyString const& event_name, double offset_x, double offset_y, double client_x, double client_y, unsigned mouse_button)
{
MouseEventInit event_init {};
event_init.offset_x = offset_x;
event_init.offset_y = offset_y;
event_init.client_x = client_x;
event_init.client_y = client_y;
event_init.button = determine_button(mouse_button);
return MouseEvent::create(window_object, event_name, event_init);
}
void MouseEvent::set_event_characteristics()
{
if (type().is_one_of(EventNames::mousedown, EventNames::mousemove, EventNames::mouseout, EventNames::mouseover, EventNames::mouseup, HTML::EventNames::click)) {
set_bubbles(true);
set_cancelable(true);
set_composed(true);
}
}
}