1 éve · cca779e7f6
--- a/Tests/LibWeb/Ref/item-with-negative-z-index-ref.html
+++ b/Tests/LibWeb/Ref/item-with-negative-z-index-ref.html
@@ -0,0 +1,8 @@
 
				+<!doctype html><style type="text/css">
			
 
				+* { outline: 1px solid black; }
			
 
				+body { display: grid; }
			
 
				+.foo {
			
 
				+    grid-area: 1 / 1 / auto / auto;
			
 
				+    background: pink;
			
 
				+}
			
 
				+</style><body><div class="foo">foo</div>
			
--- a/Tests/LibWeb/Ref/item-with-negative-z-index.html
+++ b/Tests/LibWeb/Ref/item-with-negative-z-index.html
@@ -0,0 +1,13 @@
 
				+<!doctype html><style type="text/css">
			
 
				+* { outline: 1px solid black; }
			
 
				+body { display: grid; }
			
 
				+.foo {
			
 
				+    grid-area: 1 / 1 / auto / auto;
			
 
				+    background: pink;
			
 
				+}
			
 
				+.bar {
			
 
				+    grid-area: 1 / 1 / auto / auto;
			
 
				+    background: orange;
			
 
				+    z-index: -1;
			
 
				+}
			
 
				+</style><body><div class="foo">foo</div><div class="bar">bar</div>
			
--- a/Tests/LibWeb/Ref/manifest.json
+++ b/Tests/LibWeb/Ref/manifest.json
@@ -1,4 +1,5 @@
 
				 {
			
 
				+    "item-with-negative-z-index.html": "item-with-negative-z-index-ref.html",
			
 
				     "img-srcset-viewport-relative-sizes.html": "img-srcset-viewport-relative-sizes-ref.html",
			
 
				     "grid-items-painting-order.html": "grid-items-painting-order-ref.html",
			
 
				     "square-flex.html": "square-ref.html",
			
--- a/Userland/Libraries/LibWeb/Painting/Paintable.cpp
+++ b/Userland/Libraries/LibWeb/Painting/Paintable.cpp
@@ -27,6 +27,16 @@ void Paintable::visit_edges(Cell::Visitor& visitor)
 
				         visitor.visit(m_containing_block.value());
			
 
				 }
			
 
				 
			
 
				+bool Paintable::is_positioned() const
			
 
				+{
			
 
				+    if (layout_node().is_grid_item() && computed_values().z_index().has_value()) {
			
 
				+        // https://www.w3.org/TR/css-grid-2/#z-order
			
 
				+        // grid items with z_index should behave as if position were "relative"
			
 
				+        return true;
			
 
				+    }
			
 
				+    return computed_values().position() != CSS::Position::Static;
			
 
				+}
			
 
				+
			
 
				 void Paintable::set_dom_node(JS::GCPtr<DOM::Node> dom_node)
			
 
				 {
			
 
				     m_dom_node = dom_node;
			
--- a/Userland/Libraries/LibWeb/Painting/Paintable.h
+++ b/Userland/Libraries/LibWeb/Painting/Paintable.h
@@ -56,7 +56,7 @@ class Paintable
 
				 public:
			
 
				     virtual ~Paintable() = default;
			
 
				 
			
 
				-    [[nodiscard]] bool is_positioned() const { return layout_node().is_positioned(); }
			
 
				+    [[nodiscard]] bool is_positioned() const;
			
 
				     [[nodiscard]] bool is_fixed_position() const { return layout_node().is_fixed_position(); }
			
 
				     [[nodiscard]] bool is_absolutely_positioned() const { return layout_node().is_absolutely_positioned(); }
			
 
				     [[nodiscard]] bool is_floating() const { return layout_node().is_floating(); }