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LibWeb: Add BasicShapeStyleValue to represent CSS basic shapes

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See: https://www.w3.org/TR/css-shapes-1/#basic-shape-functions

This patch only implements the `polygon()` basic shape (with the rest
left as FIXMEs).
This commit is contained in:
MacDue 2024-05-25 23:06:47 +01:00 • committed by Andreas Kling
commit 5f17d9b34a
Notes: sideshowbarker 2024-07-17 04:49:48 +09:00
6 changed files with 126 additions and 0 deletions
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61
Userland/Libraries/LibWeb/CSS/StyleValues/BasicShapeStyleValue.cpp Normal file
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/*
* Copyright (c) 2024, MacDue <macdue@dueutil.tech>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "BasicShapeStyleValue.h"
namespace Web::CSS {
Gfx::Path Polygon::to_path(CSSPixelRect reference_box, Layout::Node const& node) const
{
Gfx::Path path;
bool first = true;
for (auto const& point : points) {
Gfx::FloatPoint resolved_point {
static_cast<float>(point.x.to_px(node, reference_box.width())),
static_cast<float>(point.y.to_px(node, reference_box.height()))
};
if (first)
path.move_to(resolved_point);
else
path.line_to(resolved_point);
first = false;
}
path.close();
return path;
}
String Polygon::to_string() const
{
StringBuilder builder;
builder.append("polygon("sv);
bool first = true;
for (auto const& point : points) {
if (!first)
builder.append(',');
builder.appendff("{} {}", point.x, point.y);
first = false;
}
builder.append(')');
return MUST(builder.to_string());
}
BasicShapeStyleValue::~BasicShapeStyleValue() = default;
Gfx::Path BasicShapeStyleValue::to_path(CSSPixelRect reference_box, Layout::Node const& node) const
{
return m_basic_shape.visit([&](auto const& shape) {
return shape.to_path(reference_box, node);
});
}
String BasicShapeStyleValue::to_string() const
{
return m_basic_shape.visit([](auto const& shape) {
return shape.to_string();
});
}
}