LibWeb: Rename SVGPathBox -> SVGGeometryBox

This fits better since it's now used by all SVGGeometryElements.

Userland/Libraries/LibWeb/Layout/SVGGeometryBox.cpp

@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2020, Matthew Olsson <matthewcolsson@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibGfx/AntiAliasingPainter.h>
+#include <LibGfx/Painter.h>
+#include <LibWeb/Layout/SVGGeometryBox.h>
+#include <LibWeb/SVG/SVGPathElement.h>
+
+namespace Web::Layout {
+
+SVGGeometryBox::SVGGeometryBox(DOM::Document& document, SVG::SVGGeometryElement& element, NonnullRefPtr<CSS::StyleProperties> properties)
+    : SVGGraphicsBox(document, element, properties)
+{
+}
+
+void SVGGeometryBox::paint(PaintContext& context, PaintPhase phase)
+{
+    if (!is_visible())
+        return;
+
+    SVGGraphicsBox::paint(context, phase);
+
+    if (phase != PaintPhase::Foreground)
+        return;
+
+    auto& geometry_element = dom_node();
+    auto& path = geometry_element.get_path();
+
+    Gfx::AntiAliasingPainter painter { context.painter() };
+    auto& svg_context = context.svg_context();
+
+    auto offset = absolute_position();
+    painter.translate(offset);
+
+    if (auto fill_color = geometry_element.fill_color().value_or(svg_context.fill_color()); fill_color.alpha() > 0) {
+        // We need to fill the path before applying the stroke, however the filled
+        // path must be closed, whereas the stroke path may not necessary be closed.
+        // Copy the path and close it for filling, but use the previous path for stroke
+        auto closed_path = path;
+        closed_path.close();
+
+        // Fills are computed as though all paths are closed (https://svgwg.org/svg2-draft/painting.html#FillProperties)
+        painter.fill_path(
+            closed_path,
+            fill_color,
+            Gfx::Painter::WindingRule::EvenOdd);
+    }
+
+    if (auto stroke_color = geometry_element.stroke_color().value_or(svg_context.stroke_color()); stroke_color.alpha() > 0) {
+        painter.stroke_path(
+            path,
+            stroke_color,
+            geometry_element.stroke_width().value_or(svg_context.stroke_width()));
+    }
+
+    painter.translate(-offset);
+}
+
+}