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Diffstat (limited to 'src/gui/painting/qcmyk_p.h')
-rw-r--r-- | src/gui/painting/qcmyk_p.h | 94 |
1 files changed, 94 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..1294a18244 --- /dev/null +++ b/src/gui/painting/qcmyk_p.h @@ -0,0 +1,94 @@ +// 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; + friend constexpr bool comparesEqual(const QCmyk32 &lhs, const QCmyk32 &rhs) noexcept + { + return lhs.m_cmyk == rhs.m_cmyk; + } + +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()); + } + + Q_DECLARE_EQUALITY_COMPARABLE_LITERAL_TYPE(QCmyk32) +}; + +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 |