1 files changed, 42 insertions, 0 deletions
diff --git a/chromium/third_party/blink/renderer/core/layout/ng/mathml/ng_math_space_layout_algorithm.cc b/chromium/third_party/blink/renderer/core/layout/ng/mathml/ng_math_space_layout_algorithm.cc
new file mode 100644
index 00000000000..4abfa765870
--- /dev/null
+++ b/chromium/third_party/blink/renderer/core/layout/ng/mathml/ng_math_space_layout_algorithm.cc
@@ -0,0 +1,42 @@
+// Copyright 2020 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "third_party/blink/renderer/core/layout/ng/mathml/ng_math_space_layout_algorithm.h"
+
+#include "third_party/blink/renderer/core/layout/ng/ng_block_break_token.h"
+#include "third_party/blink/renderer/core/layout/ng/ng_length_utils.h"
+
+namespace blink {
+
+NGMathSpaceLayoutAlgorithm::NGMathSpaceLayoutAlgorithm(
+    const NGLayoutAlgorithmParams& params)
+    : NGLayoutAlgorithm(params),
+      border_padding_(params.fragment_geometry.border +
+                      params.fragment_geometry.padding) {
+  DCHECK(params.fragment_geometry.scrollbar.IsEmpty());
+  container_builder_.SetIsNewFormattingContext(true);
+  container_builder_.SetInitialFragmentGeometry(params.fragment_geometry);
+}
+
+scoped_refptr<const NGLayoutResult> NGMathSpaceLayoutAlgorithm::Layout() {
+  DCHECK(!BreakToken());
+
+  LayoutUnit block_size = ComputeBlockSizeForFragment(
+      ConstraintSpace(), Style(), border_padding_, border_padding_.BlockSum());
+
+  container_builder_.SetIntrinsicBlockSize(border_padding_.BlockSum());
+  container_builder_.SetBlockSize(block_size);
+
+  container_builder_.SetBaseline(
+      border_padding_.block_start +
+      ValueForLength(Style().GetMathBaseline(), LayoutUnit()));
+  return container_builder_.ToBoxFragment();
+}
+
+base::Optional<MinMaxSizes> NGMathSpaceLayoutAlgorithm::ComputeMinMaxSizes(
+    const MinMaxSizesInput& input) const {
+  return CalculateMinMaxSizesIgnoringChildren(Node(), border_padding_);
+}
+
+}  // namespace blink