1 files changed, 24 insertions, 0 deletions
diff --git a/src/quickdialogs/quickdialogsquickimpl/qquickcolordialogutils.cpp b/src/quickdialogs/quickdialogsquickimpl/qquickcolordialogutils.cpp
new file mode 100644
index 0000000000..0a123f84a6
--- /dev/null
+++ b/src/quickdialogs/quickdialogsquickimpl/qquickcolordialogutils.cpp
@@ -0,0 +1,24 @@
+// Copyright (C) 2022 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
+
+#include "qquickcolordialogutils_p.h"
+
+std::pair<qreal, qreal> getSaturationAndValue(qreal saturation, qreal lightness)
+{
+    const qreal v = lightness + saturation * qMin(lightness, 1 - lightness);
+    if (v == .0)
+        return { .0, .0 };
+    const qreal s = 2 * (1 - lightness / v);
+    return { s, v };
+}
+
+std::pair<qreal, qreal> getSaturationAndLightness(qreal saturation, qreal value)
+{
+    const qreal l = value * (1 - saturation / 2);
+    if (l == .0)
+        return { .0, .0 };
+    if (l == 1 && value == 1)
+        return { saturation, l };
+    const qreal s = (value - l) / qMin(l, 1 - l);
+    return { s, l };
+}