ladybird/Userland/Libraries/LibWeb/Layout/SVGMaskBox.h
MacDue 163b6bb401 LibWeb: Special case SVG masks during layout
Rather than try to lay out masks normally, this updates the TreeBuilder
to create layout nodes for masks as a child of their user (i.e. the
masked element). This allows each use of a mask to be laid out
differently, which makes supporting `maskContentUnits=objectBoundingBox`
fairly easy.

The `SVGFormattingContext` is then updated to lay out masks last (as
their sizing may depend on their parent), and treats them like
viewports.

This is pretty ad-hoc, but the SVG specification does not give any
guidance on how to actually implement this.
2024-03-12 08:51:50 +01:00

28 lines
798 B
C++

/*
* Copyright (c) 2024, MacDue <macdue@dueutil.tech>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibWeb/Layout/SVGGraphicsBox.h>
#include <LibWeb/SVG/SVGElement.h>
#include <LibWeb/SVG/SVGMaskElement.h>
namespace Web::Layout {
class SVGMaskBox : public SVGGraphicsBox {
JS_CELL(SVGMaskBox, SVGBox);
public:
SVGMaskBox(DOM::Document&, SVG::SVGMaskElement&, NonnullRefPtr<CSS::StyleProperties>);
virtual ~SVGMaskBox() override = default;
SVG::SVGMaskElement& dom_node() { return verify_cast<SVG::SVGMaskElement>(SVGGraphicsBox::dom_node()); }
SVG::SVGMaskElement const& dom_node() const { return verify_cast<SVG::SVGMaskElement>(SVGGraphicsBox::dom_node()); }
virtual JS::GCPtr<Painting::Paintable> create_paintable() const override;
};
}