Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89
Commit: 93712b24bf
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256
Reviewed-by: https://github.com/sideshowbarker

Libraries/LibWeb/CSS/Ratio.h

@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2022-2023, Sam Atkins <atkinssj@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/String.h>
+
+namespace Web::CSS {
+
+// https://www.w3.org/TR/css-values-4/#ratios
+class Ratio {
+public:
+    Ratio(double first, double second = 1);
+    double numerator() const { return m_first_value; }
+    double denominator() const { return m_second_value; }
+    double value() const { return m_first_value / m_second_value; }
+    bool is_degenerate() const;
+
+    String to_string() const;
+
+    bool operator==(Ratio const& other) const
+    {
+        return value() == other.value();
+    }
+
+    int operator<=>(Ratio const& other) const
+    {
+        auto this_value = value();
+        auto other_value = other.value();
+
+        if (this_value < other_value)
+            return -1;
+        if (this_value > other_value)
+            return 1;
+        return 0;
+    }
+
+private:
+    double m_first_value { 0 };
+    double m_second_value { 1 };
+};
+
+}