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LibWeb: Let Paintable perform the painting

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This patch adds a bunch of Paintable subclasses, each corresponding to
the Layout::Node subclasses that had a paint() override. All painting
logic is moved from layout nodes into their corresponding paintables.

Paintables are now created by asking a Layout::Box to produce one:

    static NonnullOwnPtr<Paintable> Layout::Box::create_paintable()

Note that inline nodes still have their painting logic. Since they
are not boxes, and all paintables have a corresponding box, we'll need
to come up with some other solution for them.
This commit is contained in:
Andreas Kling 2022-03-10 14:02:25 +01:00
parent f6497b64ac
commit 02b316fd5c
64 changed files with 1307 additions and 602 deletions
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38
Userland/Libraries/LibWeb/Painting/SVGGraphicsPaintable.cpp Normal file
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/*
* Copyright (c) 2018-2022, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/Layout/ImageBox.h>
#include <LibWeb/Painting/SVGGraphicsPaintable.h>
namespace Web::Painting {
SVGGraphicsPaintable::SVGGraphicsPaintable(Layout::SVGGraphicsBox const& layout_box)
: SVGPaintable(layout_box)
{
}
Layout::SVGGraphicsBox const& SVGGraphicsPaintable::layout_box() const
{
return static_cast<Layout::SVGGraphicsBox const&>(m_layout_box);
}
void SVGGraphicsPaintable::before_children_paint(PaintContext& context, PaintPhase phase) const
{
SVGPaintable::before_children_paint(context, phase);
if (phase != PaintPhase::Foreground)
return;
auto& graphics_element = verify_cast<SVG::SVGGraphicsElement>(layout_box().dom_node());
if (graphics_element.fill_color().has_value())
context.svg_context().set_fill_color(graphics_element.fill_color().value());
if (graphics_element.stroke_color().has_value())
context.svg_context().set_stroke_color(graphics_element.stroke_color().value());
if (graphics_element.stroke_width().has_value())
context.svg_context().set_stroke_width(graphics_element.stroke_width().value());
}
}