1// Copyright (C) 2023 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#ifndef QCMYK_P_H
5#define QCMYK_P_H
6
7//
8// W A R N I N G
9// -------------
10//
11// This file is not part of the Qt API. It exists purely as an
12// implementation detail. This header file may change from version to
13// version without notice, or even be removed.
14//
15// We mean it.
16//
17
18#include <QtGui/private/qtguiglobal_p.h>
19#include <QtGui/qcolor.h>
20
21QT_BEGIN_NAMESPACE
22
23class QCmyk32
24{
25private:
26 uint m_cmyk = 0;
27 friend constexpr bool comparesEqual(const QCmyk32 &lhs, const QCmyk32 &rhs) noexcept
28 {
29 return lhs.m_cmyk == rhs.m_cmyk;
30 }
31
32public:
33 QCmyk32() = default;
34
35 constexpr QCmyk32(int cyan, int magenta, int yellow, int black) :
36#if QT_BYTE_ORDER == Q_BIG_ENDIAN
37 m_cmyk(cyan << 24 | magenta << 16 | yellow << 8 | black)
38#else
39 m_cmyk(cyan | magenta << 8 | yellow << 16 | black << 24)
40#endif
41 {
42 }
43
44#if QT_BYTE_ORDER == Q_BIG_ENDIAN
45 constexpr int cyan() const noexcept { return (m_cmyk >> 24) & 0xff; }
46 constexpr int magenta() const noexcept { return (m_cmyk >> 16) & 0xff; }
47 constexpr int yellow() const noexcept { return (m_cmyk >> 8) & 0xff; }
48 constexpr int black() const noexcept { return (m_cmyk ) & 0xff; }
49#else
50 constexpr int cyan() const noexcept { return (m_cmyk ) & 0xff; }
51 constexpr int magenta() const noexcept { return (m_cmyk >> 8) & 0xff; }
52 constexpr int yellow() const noexcept { return (m_cmyk >> 16) & 0xff; }
53 constexpr int black() const noexcept { return (m_cmyk >> 24) & 0xff; }
54#endif
55
56 QColor toColor() const noexcept
57 {
58 return QColor::fromCmyk(c: cyan(), m: magenta(), y: yellow(), k: black());
59 }
60
61 constexpr uint toUint() const noexcept
62 {
63 return m_cmyk;
64 }
65
66 constexpr static QCmyk32 fromCmyk32(uint cmyk) noexcept
67 {
68 QCmyk32 result;
69 result.m_cmyk = cmyk;
70 return result;
71 }
72
73 static QCmyk32 fromRgba(QRgb rgba) noexcept
74 {
75 const QColor c = QColor(rgba).toCmyk();
76 return QCmyk32(c.cyan(), c.magenta(), c.yellow(), c.black());
77 }
78
79 static QCmyk32 fromColor(const QColor &color) noexcept
80 {
81 QColor c = color.toCmyk();
82 return QCmyk32(c.cyan(), c.magenta(), c.yellow(), c.black());
83 }
84
85 Q_DECLARE_EQUALITY_COMPARABLE_LITERAL_TYPE(QCmyk32)
86};
87
88static_assert(sizeof(QCmyk32) == sizeof(int));
89static_assert(alignof(QCmyk32) == alignof(int));
90static_assert(std::is_standard_layout_v<QCmyk32>);
91
92QT_END_NAMESPACE
93
94#endif // QCMYK_P_H
95

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source code of qtbase/src/gui/painting/qcmyk_p.h