jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#pragma once
8
9#include <LibWeb/CSS/Length.h>
10#include <LibWeb/CSS/Percentage.h>
11
12namespace Web::CSS {
13
14class Size {
15public:
16 enum class Type {
17 Auto,
18 Length,
19 Percentage,
20 MinContent,
21 MaxContent,
22 FitContent,
23 None, // NOTE: This is only valid for max-width and max-height.
24 };
25
26 static Size make_auto();
27 static Size make_px(CSSPixels);
28 static Size make_length(Length);
29 static Size make_percentage(Percentage);
30 static Size make_min_content();
31 static Size make_max_content();
32 static Size make_fit_content(Length available_space);
33 static Size make_none();
34
35 bool is_auto() const { return m_type == Type::Auto; }
36 bool is_length() const { return m_type == Type::Length; }
37 bool is_percentage() const { return m_type == Type::Percentage; }
38 bool is_min_content() const { return m_type == Type::MinContent; }
39 bool is_max_content() const { return m_type == Type::MaxContent; }
40 bool is_fit_content() const { return m_type == Type::FitContent; }
41 bool is_none() const { return m_type == Type::None; }
42
43 // FIXME: This is a stopgap API that will go away once all layout code is aware of CSS::Size.
44 CSS::Length resolved(Layout::Node const&, Length const& reference_value) const;
45
46 bool contains_percentage() const;
47
48 CSS::Length const& length() const
49 {
50 VERIFY(is_length());
51 return m_length_percentage.length();
52 }
53
54 CSS::Percentage const& percentage() const
55 {
56 VERIFY(is_percentage());
57 return m_length_percentage.percentage();
58 }
59
60 CSS::Length const& fit_content_available_space() const
61 {
62 VERIFY(is_fit_content());
63 return m_length_percentage.length();
64 }
65
66 ErrorOr<String> to_string() const;
67
68private:
69 Size(Type type, LengthPercentage);
70
71 Type m_type {};
72 CSS::LengthPercentage m_length_percentage;
73};
74
75}
76
77template<>
78struct AK::Formatter<Web::CSS::Size> : Formatter<StringView> {
79 ErrorOr<void> format(FormatBuilder& builder, Web::CSS::Size const& size)
80 {
81 return Formatter<StringView>::format(builder, TRY(size.to_string()));
82 }
83};