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LibWeb: Add DOMRect and Element.getBoundingClientRect()

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This marks our entry into the Web::Geometry namespace, based on the
"Geometry" spec at https://drafts.fxtf.org/geometry/
This commit is contained in:
Andreas Kling 2021-09-27 00:55:13 +02:00
parent 0c63f0bf73
commit 43d378940f
8 changed files with 112 additions and 1 deletions
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57
Userland/Libraries/LibWeb/Geometry/DOMRect.h Normal file
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/*
* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/RefCounted.h>
#include <LibGfx/Rect.h>
#include <LibWeb/Bindings/Wrappable.h>
#include <LibWeb/Forward.h>
namespace Web::Geometry {
// FIXME: Split this into DOMRectReadOnly and DOMRect
// https://drafts.fxtf.org/geometry/#DOMRect
class DOMRect final
: public RefCounted<DOMRect>
, public Bindings::Wrappable {
public:
using WrapperType = Bindings::DOMRectWrapper;
static NonnullRefPtr<DOMRect> create_with_global_object(Bindings::WindowObject&, double x = 0, double y = 0, double width = 0, double height = 0)
{
return DOMRect::create(x, y, width, height);
}
static NonnullRefPtr<DOMRect> create(double x = 0, double y = 0, double width = 0, double height = 0)
{
return adopt_ref(*new DOMRect(x, y, width, height));
}
static NonnullRefPtr<DOMRect> create(Gfx::FloatRect const& rect)
{
return adopt_ref(*new DOMRect(rect.x(), rect.y(), rect.width(), rect.height()));
}
double x() const { return m_rect.x(); }
double y() const { return m_rect.y(); }
double width() const { return m_rect.width(); }
double height() const { return m_rect.height(); }
double top() const { return min(y(), y() + height()); }
double right() const { return max(x(), x() + width()); }
double bottom() const { return max(y(), y() + height()); }
double left() const { return min(x(), x() + width()); }
private:
DOMRect(float x, float y, float width, float height)
: m_rect(x, y, width, height)
{
}
Gfx::FloatRect m_rect;
};
}