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9a31c3d56b
CSS-Typed-OM has the following hierarchy:
CSSStyleValue
- CSSNumericValue
- CSSUnitValue
- CSSMathValue
- ...various math functions...
Somewhat unintuitively, numbers are also stored using CSSUnitValue with
`unit = "number"`.
There are no distinct classes for LengthStyleValue, etc in the spec, but
they're convenient for us, so they are implemented as subclasses of
CSSUnitValue, at least for now.
(cherry picked from commit 895276426791567f22a612c4a40fa177571cc03e)
46 lines
1.5 KiB
C++
46 lines
1.5 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021, Tobias Christiansen <tobyase@serenityos.org>
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* Copyright (c) 2021-2023, Sam Atkins <atkinssj@serenityos.org>
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* Copyright (c) 2022-2023, MacDue <macdue@dueutil.tech>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "LengthStyleValue.h"
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namespace Web::CSS {
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ValueComparingNonnullRefPtr<LengthStyleValue> LengthStyleValue::create(Length const& length)
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{
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VERIFY(!length.is_auto());
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if (length.is_px()) {
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if (length.raw_value() == 0) {
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static auto value = adopt_ref(*new (nothrow) LengthStyleValue(CSS::Length::make_px(0)));
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return value;
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}
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if (length.raw_value() == 1) {
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static auto value = adopt_ref(*new (nothrow) LengthStyleValue(CSS::Length::make_px(1)));
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return value;
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}
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}
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return adopt_ref(*new (nothrow) LengthStyleValue(length));
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}
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ValueComparingNonnullRefPtr<CSSStyleValue const> LengthStyleValue::absolutized(CSSPixelRect const& viewport_rect, Length::FontMetrics const& font_metrics, Length::FontMetrics const& root_font_metrics) const
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{
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if (auto length = m_length.absolutize(viewport_rect, font_metrics, root_font_metrics); length.has_value())
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return LengthStyleValue::create(length.release_value());
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return *this;
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}
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bool LengthStyleValue::equals(CSSStyleValue const& other) const
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{
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if (type() != other.type())
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return false;
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auto const& other_length = other.as_length();
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return m_length == other_length.m_length;
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}
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}
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