LibWeb: Move PositionValue into its own files

It's in Position.{h,cpp} because it represents a <position> in CSS, even
though it's currently named PositionValue to avoid collisions.

8 files changed, 165 insertions, 133 deletions

diff --git a/Userland/Libraries/LibWeb/CMakeLists.txt b/Userland/Libraries/LibWeb/CMakeLists.txt
index 66d63ce502..f7f07dde62 100644
--- a/Userland/Libraries/LibWeb/CMakeLists.txt
+++ b/Userland/Libraries/LibWeb/CMakeLists.txt
@@ -52,6 +52,7 @@ set(SOURCES
     CSS/Parser/Token.cpp
     CSS/Parser/Tokenizer.cpp
     CSS/Percentage.cpp
+    CSS/Position.cpp
     CSS/PreferredColorScheme.cpp
     CSS/Ratio.cpp
     CSS/Resolution.cpp
diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.h b/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
index 10c8695cea..f5f83af1d8 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
@@ -22,6 +22,7 @@
 #include <LibWeb/CSS/Parser/Rule.h>
 #include <LibWeb/CSS/Parser/TokenStream.h>
 #include <LibWeb/CSS/Parser/Tokenizer.h>
+#include <LibWeb/CSS/Position.h>
 #include <LibWeb/CSS/PropertyID.h>
 #include <LibWeb/CSS/Ratio.h>
 #include <LibWeb/CSS/Selector.h>
diff --git a/Userland/Libraries/LibWeb/CSS/Position.cpp b/Userland/Libraries/LibWeb/CSS/Position.cpp
new file mode 100644
index 0000000000..cfca1e29ac
--- /dev/null
+++ b/Userland/Libraries/LibWeb/CSS/Position.cpp
@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 2022-2023, MacDue <macdue@dueutil.tech>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include "Position.h"
+#include <LibGfx/Point.h>
+#include <LibGfx/Rect.h>
+#include <LibWeb/CSS/StyleValue.h>
+
+namespace Web::CSS {
+
+CSSPixelPoint PositionValue::resolved(Layout::Node const& node, CSSPixelRect const& rect) const
+{
+    // Note: A preset + a none default x/y_relative_to is impossible in the syntax (and makes little sense)
+    CSSPixels x = horizontal_position.visit(
+        [&](HorizontalPreset preset) -> CSSPixels {
+            return rect.width() * [&] {
+                switch (preset) {
+                case HorizontalPreset::Left:
+                    return 0.0f;
+                case HorizontalPreset::Center:
+                    return 0.5f;
+                case HorizontalPreset::Right:
+                    return 1.0f;
+                default:
+                    VERIFY_NOT_REACHED();
+                }
+            }();
+        },
+        [&](LengthPercentage length_percentage) -> CSSPixels {
+            return length_percentage.resolved(node, Length::make_px(rect.width())).to_px(node);
+        });
+    CSSPixels y = vertical_position.visit(
+        [&](VerticalPreset preset) -> CSSPixels {
+            return rect.height() * [&] {
+                switch (preset) {
+                case VerticalPreset::Top:
+                    return 0.0f;
+                case VerticalPreset::Center:
+                    return 0.5f;
+                case VerticalPreset::Bottom:
+                    return 1.0f;
+                default:
+                    VERIFY_NOT_REACHED();
+                }
+            }();
+        },
+        [&](LengthPercentage length_percentage) -> CSSPixels {
+            return length_percentage.resolved(node, Length::make_px(rect.height())).to_px(node);
+        });
+    if (x_relative_to == HorizontalEdge::Right)
+        x = rect.width() - x;
+    if (y_relative_to == VerticalEdge::Bottom)
+        y = rect.height() - y;
+    return CSSPixelPoint { rect.x() + x, rect.y() + y };
+}
+
+ErrorOr<void> PositionValue::serialize(StringBuilder& builder) const
+{
+    // Note: This means our serialization with simplify any with explicit edges that are just `top left`.
+    bool has_relative_edges = x_relative_to == HorizontalEdge::Right || y_relative_to == VerticalEdge::Bottom;
+    if (has_relative_edges)
+        TRY(builder.try_append(x_relative_to == HorizontalEdge::Left ? "left "sv : "right "sv));
+    TRY(horizontal_position.visit(
+        [&](HorizontalPreset preset) -> ErrorOr<void> {
+            return builder.try_append([&] {
+                switch (preset) {
+                case HorizontalPreset::Left:
+                    return "left"sv;
+                case HorizontalPreset::Center:
+                    return "center"sv;
+                case HorizontalPreset::Right:
+                    return "right"sv;
+                default:
+                    VERIFY_NOT_REACHED();
+                }
+            }());
+        },
+        [&](LengthPercentage length_percentage) -> ErrorOr<void> {
+            return builder.try_appendff(TRY(length_percentage.to_string()));
+        }));
+    TRY(builder.try_append(' '));
+    if (has_relative_edges)
+        TRY(builder.try_append(y_relative_to == VerticalEdge::Top ? "top "sv : "bottom "sv));
+    TRY(vertical_position.visit(
+        [&](VerticalPreset preset) -> ErrorOr<void> {
+            return builder.try_append([&] {
+                switch (preset) {
+                case VerticalPreset::Top:
+                    return "top"sv;
+                case VerticalPreset::Center:
+                    return "center"sv;
+                case VerticalPreset::Bottom:
+                    return "bottom"sv;
+                default:
+                    VERIFY_NOT_REACHED();
+                }
+            }());
+        },
+        [&](LengthPercentage length_percentage) -> ErrorOr<void> {
+            return builder.try_append(TRY(length_percentage.to_string()));
+        }));
+    return {};
+}
+
+}
diff --git a/Userland/Libraries/LibWeb/CSS/Position.h b/Userland/Libraries/LibWeb/CSS/Position.h
new file mode 100644
index 0000000000..f9f7425dcd
--- /dev/null
+++ b/Userland/Libraries/LibWeb/CSS/Position.h
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2022-2023, MacDue <macdue@dueutil.tech>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibWeb/CSS/Percentage.h>
+#include <LibWeb/PixelUnits.h>
+
+namespace Web::CSS {
+
+// FIXME: Named PositionValue to avoid conflicts with enums, but this represents a <position>
+struct PositionValue {
+    enum class HorizontalPreset {
+        Left,
+        Center,
+        Right
+    };
+
+    enum class VerticalPreset {
+        Top,
+        Center,
+        Bottom
+    };
+
+    enum class HorizontalEdge {
+        Left,
+        Right
+    };
+
+    enum class VerticalEdge {
+        Top,
+        Bottom
+    };
+
+    static PositionValue center()
+    {
+        return PositionValue { HorizontalPreset::Center, VerticalPreset::Center };
+    }
+
+    Variant<HorizontalPreset, LengthPercentage> horizontal_position { HorizontalPreset::Left };
+    Variant<VerticalPreset, LengthPercentage> vertical_position { VerticalPreset::Top };
+    HorizontalEdge x_relative_to { HorizontalEdge::Left };
+    VerticalEdge y_relative_to { VerticalEdge::Top };
+
+    CSSPixelPoint resolved(Layout::Node const& node, CSSPixelRect const& rect) const;
+    ErrorOr<void> serialize(StringBuilder&) const;
+    bool operator==(PositionValue const&) const = default;
+};
+
+}
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValue.cpp b/Userland/Libraries/LibWeb/CSS/StyleValue.cpp
index 9b75dee93d..a563c12b76 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleValue.cpp
+++ b/Userland/Libraries/LibWeb/CSS/StyleValue.cpp
@@ -1021,100 +1021,6 @@ CalculatedStyleValue::CalculationResult CalculatedStyleValue::CalcNumberSumPartW
     return value->resolve(layout_node, percentage_basis);
 }
 
-CSSPixelPoint PositionValue::resolved(Layout::Node const& node, CSSPixelRect const& rect) const
-{
-    // Note: A preset + a none default x/y_relative_to is impossible in the syntax (and makes little sense)
-    CSSPixels x = horizontal_position.visit(
-        [&](HorizontalPreset preset) -> CSSPixels {
-            return rect.width() * [&] {
-                switch (preset) {
-                case HorizontalPreset::Left:
-                    return 0.0f;
-                case HorizontalPreset::Center:
-                    return 0.5f;
-                case HorizontalPreset::Right:
-                    return 1.0f;
-                default:
-                    VERIFY_NOT_REACHED();
-                }
-            }();
-        },
-        [&](LengthPercentage length_percentage) -> CSSPixels {
-            return length_percentage.resolved(node, Length::make_px(rect.width())).to_px(node);
-        });
-    CSSPixels y = vertical_position.visit(
-        [&](VerticalPreset preset) -> CSSPixels {
-            return rect.height() * [&] {
-                switch (preset) {
-                case VerticalPreset::Top:
-                    return 0.0f;
-                case VerticalPreset::Center:
-                    return 0.5f;
-                case VerticalPreset::Bottom:
-                    return 1.0f;
-                default:
-                    VERIFY_NOT_REACHED();
-                }
-            }();
-        },
-        [&](LengthPercentage length_percentage) -> CSSPixels {
-            return length_percentage.resolved(node, Length::make_px(rect.height())).to_px(node);
-        });
-    if (x_relative_to == HorizontalEdge::Right)
-        x = rect.width() - x;
-    if (y_relative_to == VerticalEdge::Bottom)
-        y = rect.height() - y;
-    return CSSPixelPoint { rect.x() + x, rect.y() + y };
-}
-
-ErrorOr<void> PositionValue::serialize(StringBuilder& builder) const
-{
-    // Note: This means our serialization with simplify any with explicit edges that are just `top left`.
-    bool has_relative_edges = x_relative_to == HorizontalEdge::Right || y_relative_to == VerticalEdge::Bottom;
-    if (has_relative_edges)
-        TRY(builder.try_append(x_relative_to == HorizontalEdge::Left ? "left "sv : "right "sv));
-    TRY(horizontal_position.visit(
-        [&](HorizontalPreset preset) -> ErrorOr<void> {
-            return builder.try_append([&] {
-                switch (preset) {
-                case HorizontalPreset::Left:
-                    return "left"sv;
-                case HorizontalPreset::Center:
-                    return "center"sv;
-                case HorizontalPreset::Right:
-                    return "right"sv;
-                default:
-                    VERIFY_NOT_REACHED();
-                }
-            }());
-        },
-        [&](LengthPercentage length_percentage) -> ErrorOr<void> {
-            return builder.try_appendff(TRY(length_percentage.to_string()));
-        }));
-    TRY(builder.try_append(' '));
-    if (has_relative_edges)
-        TRY(builder.try_append(y_relative_to == VerticalEdge::Top ? "top "sv : "bottom "sv));
-    TRY(vertical_position.visit(
-        [&](VerticalPreset preset) -> ErrorOr<void> {
-            return builder.try_append([&] {
-                switch (preset) {
-                case VerticalPreset::Top:
-                    return "top"sv;
-                case VerticalPreset::Center:
-                    return "center"sv;
-                case VerticalPreset::Bottom:
-                    return "bottom"sv;
-                default:
-                    VERIFY_NOT_REACHED();
-                }
-            }());
-        },
-        [&](LengthPercentage length_percentage) -> ErrorOr<void> {
-            return builder.try_append(TRY(length_percentage.to_string()));
-        }));
-    return {};
-}
-
 Optional<CSS::Length> absolutized_length(CSS::Length const& length, CSSPixelRect const& viewport_rect, Gfx::FontPixelMetrics const& font_metrics, CSSPixels font_size, CSSPixels root_font_size, CSSPixels line_height, CSSPixels root_line_height)
 {
     if (length.is_px())
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValue.h b/Userland/Libraries/LibWeb/CSS/StyleValue.h
index a1e8ea9548..86d140907e 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleValue.h
+++ b/Userland/Libraries/LibWeb/CSS/StyleValue.h
@@ -36,45 +36,6 @@
 
 namespace Web::CSS {
 
-// FIXME: Named PositionValue to avoid conflicts with enums, but this represents a <position>
-struct PositionValue {
-    enum class HorizontalPreset {
-        Left,
-        Center,
-        Right
-    };
-
-    enum class VerticalPreset {
-        Top,
-        Center,
-        Bottom
-    };
-
-    enum class HorizontalEdge {
-        Left,
-        Right
-    };
-
-    enum class VerticalEdge {
-        Top,
-        Bottom
-    };
-
-    static PositionValue center()
-    {
-        return PositionValue { HorizontalPreset::Center, VerticalPreset::Center };
-    }
-
-    Variant<HorizontalPreset, LengthPercentage> horizontal_position { HorizontalPreset::Left };
-    Variant<VerticalPreset, LengthPercentage> vertical_position { VerticalPreset::Top };
-    HorizontalEdge x_relative_to { HorizontalEdge::Left };
-    VerticalEdge y_relative_to { VerticalEdge::Top };
-
-    CSSPixelPoint resolved(Layout::Node const& node, CSSPixelRect const& rect) const;
-    ErrorOr<void> serialize(StringBuilder&) const;
-    bool operator==(PositionValue const&) const = default;
-};
-
 // FIXME: Find a better place for this helper.
 inline Gfx::Painter::ScalingMode to_gfx_scaling_mode(CSS::ImageRendering css_value)
 {
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValues/ConicGradientStyleValue.h b/Userland/Libraries/LibWeb/CSS/StyleValues/ConicGradientStyleValue.h
index 4cb277afc4..bb2ea86ad6 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleValues/ConicGradientStyleValue.h
+++ b/Userland/Libraries/LibWeb/CSS/StyleValues/ConicGradientStyleValue.h
@@ -9,6 +9,7 @@
 
 #pragma once
 
+#include <LibWeb/CSS/Position.h>
 #include <LibWeb/CSS/StyleValues/AbstractImageStyleValue.h>
 #include <LibWeb/Painting/GradientPainting.h>
 
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValues/RadialGradientStyleValue.h b/Userland/Libraries/LibWeb/CSS/StyleValues/RadialGradientStyleValue.h
index e28bf66721..aae9e8c864 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleValues/RadialGradientStyleValue.h
+++ b/Userland/Libraries/LibWeb/CSS/StyleValues/RadialGradientStyleValue.h
@@ -11,6 +11,7 @@
 
 #include <AK/Vector.h>
 #include <LibWeb/CSS/Enums.h>
+#include <LibWeb/CSS/Position.h>
 #include <LibWeb/CSS/StyleValues/AbstractImageStyleValue.h>
 #include <LibWeb/Painting/GradientPainting.h>