ladybird/Userland/Libraries/LibWeb/Layout/SVGGeometryBox.cpp
Sam Atkins aba8774c9c LibWeb: Give SVG geometry elements a position
This makes the selected-in-the-inspector outline appear in the right
place. We take the stroke-width into account when producing the
bounding box, which makes the fit nice and snug. :^)
2022-02-16 21:47:53 +01:00

62 lines
2 KiB
C++

/*
* Copyright (c) 2020, Matthew Olsson <matthewcolsson@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibGfx/AntiAliasingPainter.h>
#include <LibGfx/Painter.h>
#include <LibWeb/Layout/SVGGeometryBox.h>
#include <LibWeb/SVG/SVGPathElement.h>
namespace Web::Layout {
SVGGeometryBox::SVGGeometryBox(DOM::Document& document, SVG::SVGGeometryElement& element, NonnullRefPtr<CSS::StyleProperties> properties)
: SVGGraphicsBox(document, element, properties)
{
}
void SVGGeometryBox::paint(PaintContext& context, PaintPhase phase)
{
if (!is_visible())
return;
SVGGraphicsBox::paint(context, phase);
if (phase != PaintPhase::Foreground)
return;
auto& geometry_element = dom_node();
auto& path = geometry_element.get_path();
Gfx::AntiAliasingPainter painter { context.painter() };
auto& svg_context = context.svg_context();
auto offset = svg_context.svg_element_position();
painter.translate(offset);
if (auto fill_color = geometry_element.fill_color().value_or(svg_context.fill_color()); fill_color.alpha() > 0) {
// We need to fill the path before applying the stroke, however the filled
// path must be closed, whereas the stroke path may not necessary be closed.
// Copy the path and close it for filling, but use the previous path for stroke
auto closed_path = path;
closed_path.close();
// Fills are computed as though all paths are closed (https://svgwg.org/svg2-draft/painting.html#FillProperties)
painter.fill_path(
closed_path,
fill_color,
Gfx::Painter::WindingRule::EvenOdd);
}
if (auto stroke_color = geometry_element.stroke_color().value_or(svg_context.stroke_color()); stroke_color.alpha() > 0) {
painter.stroke_path(
path,
stroke_color,
geometry_element.stroke_width().value_or(svg_context.stroke_width()));
}
painter.translate(-offset);
}
}