ladybird/Userland/Libraries/LibWeb/Layout/VideoBox.cpp
Aliaksandr Kalenik 5ff7448fee LibWeb: Move viewport subscriptions from BrowsingContext to Document
With this change, elements that want to receive viewport rect updates
will need to register on document instead of the browsing context.

This change solves the problem where a browsing context for a document
is guaranteed to exist only while the document is active so browsing
context might not exit by the time DOM node that want to register is
constructed.

This is a part of preparation work before switching to navigables where
this issue becomes more visible.
2023-08-23 20:14:20 +02:00

63 lines
1.7 KiB
C++

/*
* Copyright (c) 2023, Tim Flynn <trflynn89@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/HTML/HTMLVideoElement.h>
#include <LibWeb/Layout/VideoBox.h>
#include <LibWeb/Painting/VideoPaintable.h>
namespace Web::Layout {
VideoBox::VideoBox(DOM::Document& document, DOM::Element& element, NonnullRefPtr<CSS::StyleProperties> style)
: ReplacedBox(document, element, move(style))
{
document.register_viewport_client(*this);
}
void VideoBox::finalize()
{
Base::finalize();
// NOTE: We unregister from the document in finalize() to avoid trouble
// in the scenario where our Document has already been swept by GC.
document().unregister_viewport_client(*this);
}
HTML::HTMLVideoElement& VideoBox::dom_node()
{
return static_cast<HTML::HTMLVideoElement&>(ReplacedBox::dom_node());
}
HTML::HTMLVideoElement const& VideoBox::dom_node() const
{
return static_cast<HTML::HTMLVideoElement const&>(ReplacedBox::dom_node());
}
void VideoBox::prepare_for_replaced_layout()
{
auto width = static_cast<float>(dom_node().video_width());
set_natural_width(width);
auto height = static_cast<float>(dom_node().video_height());
set_natural_height(height);
if (width != 0 && height != 0)
set_natural_aspect_ratio(width / height);
else
set_natural_aspect_ratio({});
}
void VideoBox::did_set_viewport_rect(CSSPixelRect const&)
{
// FIXME: Several steps in HTMLMediaElement indicate we may optionally handle whether the media object
// is in view. Implement those steps.
}
JS::GCPtr<Painting::Paintable> VideoBox::create_paintable() const
{
return Painting::VideoPaintable::create(*this);
}
}