1 files changed, 88 insertions, 0 deletions
diff --git a/src/gui/painting/qcmyk_p.h b/src/gui/painting/qcmyk_p.h
new file mode 100644
index 0000000000..d00a4b5a6e
--- /dev/null
+++ b/src/gui/painting/qcmyk_p.h
@@ -0,0 +1,88 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+#ifndef QCMYK_P_H
+#define QCMYK_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtGui/private/qtguiglobal_p.h>
+#include <QtGui/qcolor.h>
+
+QT_BEGIN_NAMESPACE
+
+class QCmyk32
+{
+private:
+    uint m_cmyk = 0;
+
+public:
+    QCmyk32() = default;
+
+    constexpr QCmyk32(int cyan, int magenta, int yellow, int black) :
+#if QT_BYTE_ORDER == Q_BIG_ENDIAN
+        m_cmyk(cyan << 24 | magenta << 16 | yellow << 8 | black)
+#else
+        m_cmyk(cyan | magenta << 8 | yellow << 16 | black << 24)
+#endif
+    {
+    }
+
+#if QT_BYTE_ORDER == Q_BIG_ENDIAN
+    constexpr int cyan() const noexcept    { return (m_cmyk >> 24) & 0xff; }
+    constexpr int magenta() const noexcept { return (m_cmyk >> 16) & 0xff; }
+    constexpr int yellow() const noexcept  { return (m_cmyk >>  8) & 0xff; }
+    constexpr int black() const noexcept   { return (m_cmyk      ) & 0xff; }
+#else
+    constexpr int cyan() const noexcept    { return (m_cmyk      ) & 0xff; }
+    constexpr int magenta() const noexcept { return (m_cmyk >>  8) & 0xff; }
+    constexpr int yellow() const noexcept  { return (m_cmyk >> 16) & 0xff; }
+    constexpr int black() const noexcept   { return (m_cmyk >> 24) & 0xff; }
+#endif
+
+    QColor toColor() const noexcept
+    {
+        return QColor::fromCmyk(cyan(), magenta(), yellow(), black());
+    }
+
+    constexpr uint toUint() const noexcept
+    {
+        return m_cmyk;
+    }
+
+    constexpr static QCmyk32 fromCmyk32(uint cmyk) noexcept
+    {
+        QCmyk32 result;
+        result.m_cmyk = cmyk;
+        return result;
+    }
+
+    static QCmyk32 fromRgba(QRgb rgba) noexcept
+    {
+        const QColor c = QColor(rgba).toCmyk();
+        return QCmyk32(c.cyan(), c.magenta(), c.yellow(), c.black());
+    }
+
+    static QCmyk32 fromColor(const QColor &color) noexcept
+    {
+        QColor c = color.toCmyk();
+        return QCmyk32(c.cyan(), c.magenta(), c.yellow(), c.black());
+    }
+};
+
+static_assert(sizeof(QCmyk32) == sizeof(int));
+static_assert(alignof(QCmyk32) == alignof(int));
+static_assert(std::is_standard_layout_v<QCmyk32>);
+
+QT_END_NAMESPACE
+
+#endif // QCMYK_P_H