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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#pragma once
28
29#include <AK/String.h>
30
31class Length {
32public:
33 enum class Type {
34 Auto,
35 Absolute,
36 };
37
38 Length() {}
39 Length(int value, Type type)
40 : m_type(type)
41 , m_value(value)
42 {
43 }
44 Length(float value, Type type)
45 : m_type(type)
46 , m_value(value)
47 {
48 }
49 ~Length() {}
50
51 bool is_auto() const { return m_type == Type::Auto; }
52 bool is_absolute() const { return m_type == Type::Absolute; }
53
54 float value() const { return m_value; }
55
56 String to_string() const
57 {
58 if (is_auto())
59 return "[Length/auto]";
60 return String::format("%g [Length/px]", m_value);
61 }
62
63 float to_px() const
64 {
65 if (is_auto())
66 return 0;
67 return m_value;
68 }
69
70private:
71 Type m_type { Type::Auto };
72 float m_value { 0 };
73};
74
75inline const LogStream& operator<<(const LogStream& stream, const Length& value)
76{
77 return stream << value.to_string();
78}