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/Resolution.cpp

@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2022-2023, Sam Atkins <atkinssj@serenityos.org>
+ * Copyright (c) 2024, Glenn Skrzypczak <glenn.skrzypczak@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include "Resolution.h"
+
+namespace Web::CSS {
+
+Resolution::Resolution(double value, Type type)
+    : m_type(type)
+    , m_value(value)
+{
+}
+
+Resolution Resolution::make_dots_per_pixel(double value)
+{
+    return { value, Type::Dppx };
+}
+
+String Resolution::to_string() const
+{
+    return MUST(String::formatted("{}dppx", to_dots_per_pixel()));
+}
+
+double Resolution::to_dots_per_pixel() const
+{
+    switch (m_type) {
+    case Type::Dpi:
+        return m_value / 96; // 1in = 2.54cm = 96px
+    case Type::Dpcm:
+        return m_value / (96.0 / 2.54); // 1cm = 96px/2.54
+    case Type::Dppx:
+        return m_value;
+    }
+    VERIFY_NOT_REACHED();
+}
+
+StringView Resolution::unit_name() const
+{
+    switch (m_type) {
+    case Type::Dpi:
+        return "dpi"sv;
+    case Type::Dpcm:
+        return "dpcm"sv;
+    case Type::Dppx:
+        return "dppx"sv;
+    }
+    VERIFY_NOT_REACHED();
+}
+
+Optional<Resolution::Type> Resolution::unit_from_name(StringView name)
+{
+    if (name.equals_ignoring_ascii_case("dpi"sv)) {
+        return Type::Dpi;
+    } else if (name.equals_ignoring_ascii_case("dpcm"sv)) {
+        return Type::Dpcm;
+    } else if (name.equals_ignoring_ascii_case("dppx"sv) || name.equals_ignoring_ascii_case("x"sv)) {
+        return Type::Dppx;
+    }
+    return {};
+}
+
+}