ladybird/Userland/Libraries/LibWeb/CSS/StyleValues/LengthStyleValue.h
Sam Atkins 0679b4e0b9 LibWeb: Wrap font metrics into a struct
Rather than passing an increasingly-unwieldy number of font parameters
individually to every function that resolves lengths, let's wrap them
up.

This is frustratingly close to being `Gfx::FontPixelMetrics`, but bitmap
fonts cause issues: We choose the closest font to what the CSS
requests, but that might have a wildly different size than what the
page expects, so we have to fudge the numbers.

No behaviour changes.
2023-04-29 16:23:50 +02:00

40 lines
1.3 KiB
C++

/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Tobias Christiansen <tobyase@serenityos.org>
* Copyright (c) 2021-2023, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2022-2023, MacDue <macdue@dueutil.tech>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibWeb/CSS/StyleValue.h>
namespace Web::CSS {
class LengthStyleValue : public StyleValueWithDefaultOperators<LengthStyleValue> {
public:
static ValueComparingNonnullRefPtr<LengthStyleValue> create(Length const&);
virtual ~LengthStyleValue() override = default;
Length const& length() const { return m_length; }
virtual bool has_length() const override { return true; }
virtual ErrorOr<String> to_string() const override { return m_length.to_string(); }
virtual Length to_length() const override { return m_length; }
virtual ValueComparingNonnullRefPtr<StyleValue const> absolutized(CSSPixelRect const& viewport_rect, Length::FontMetrics const& font_metrics, Length::FontMetrics const& root_font_metrics) const override;
bool properties_equal(LengthStyleValue const& other) const { return m_length == other.m_length; }
private:
explicit LengthStyleValue(Length const& length)
: StyleValueWithDefaultOperators(Type::Length)
, m_length(length)
{
}
Length m_length;
};
}