1 files changed, 52 insertions, 0 deletions
diff --git a/layout/mathml/nsMathMLmsqrtFrame.cpp b/layout/mathml/nsMathMLmsqrtFrame.cpp
new file mode 100644
index 0000000000..b9ad180179
--- /dev/null
+++ b/layout/mathml/nsMathMLmsqrtFrame.cpp
@@ -0,0 +1,52 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsMathMLmsqrtFrame.h"
+
+#include "mozilla/PresShell.h"
+#include "mozilla/gfx/2D.h"
+
+//
+// <msqrt> -- form a radical - implementation
+//
+
+using namespace mozilla;
+
+nsIFrame* NS_NewMathMLmsqrtFrame(PresShell* aPresShell, ComputedStyle* aStyle) {
+  return new (aPresShell)
+      nsMathMLmsqrtFrame(aStyle, aPresShell->GetPresContext());
+}
+
+NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmsqrtFrame)
+
+nsMathMLmsqrtFrame::nsMathMLmsqrtFrame(ComputedStyle* aStyle,
+                                       nsPresContext* aPresContext)
+    : nsMathMLmencloseFrame(aStyle, aPresContext, kClassID) {}
+
+nsMathMLmsqrtFrame::~nsMathMLmsqrtFrame() = default;
+
+void nsMathMLmsqrtFrame::Init(nsIContent* aContent, nsContainerFrame* aParent,
+                              nsIFrame* aPrevInFlow) {
+  nsMathMLContainerFrame::Init(aContent, aParent, aPrevInFlow);
+  AllocateMathMLChar(NOTATION_RADICAL);
+  mNotationsToDraw += NOTATION_RADICAL;
+}
+
+NS_IMETHODIMP
+nsMathMLmsqrtFrame::InheritAutomaticData(nsIFrame* aParent) {
+  nsMathMLContainerFrame::InheritAutomaticData(aParent);
+
+  mPresentationData.flags |= NS_MATHML_STRETCH_ALL_CHILDREN_VERTICALLY;
+
+  return NS_OK;
+}
+
+nsresult nsMathMLmsqrtFrame::AttributeChanged(int32_t aNameSpaceID,
+                                              nsAtom* aAttribute,
+                                              int32_t aModType) {
+  return nsMathMLContainerFrame::AttributeChanged(aNameSpaceID, aAttribute,
+                                                  aModType);
+}