1 files changed, 53 insertions, 0 deletions
diff --git a/layout/mathml/nsMathMLmmultiscriptsFrame.h b/layout/mathml/nsMathMLmmultiscriptsFrame.h
new file mode 100644
index 000000000..f3907e730
--- /dev/null
+++ b/layout/mathml/nsMathMLmmultiscriptsFrame.h
@@ -0,0 +1,53 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/. */
+
+#ifndef nsMathMLmmultiscriptsFrame_h___
+#define nsMathMLmmultiscriptsFrame_h___
+
+#include "mozilla/Attributes.h"
+#include "nsMathMLContainerFrame.h"
+
+//
+// <mmultiscripts> -- attach prescripts and tensor indices to a base 
+// <msub> -- attach a subscript to a base
+// <msubsup> -- attach a subscript-superscript pair to a base
+// <msup> -- attach a superscript to a base
+//
+
+class nsMathMLmmultiscriptsFrame : public nsMathMLContainerFrame {
+public:
+  NS_DECL_FRAMEARENA_HELPERS
+
+  friend nsIFrame* NS_NewMathMLmmultiscriptsFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
+
+  NS_IMETHOD
+  TransmitAutomaticData() override;
+
+  virtual nsresult
+  Place(DrawTarget*          aDrawTarget,
+        bool                 aPlaceOrigin,
+        ReflowOutput& aDesiredSize) override;
+
+  static nsresult
+  PlaceMultiScript(nsPresContext*          aPresContext,
+                   DrawTarget*             aDrawTarget,
+                   bool                    aPlaceOrigin,
+                   ReflowOutput&    aDesiredSize,
+                   nsMathMLContainerFrame* aForFrame,
+                   nscoord                 aUserSubScriptShift,
+                   nscoord                 aUserSupScriptShift,
+                   float                   aFontSizeInflation);
+
+  uint8_t
+  ScriptIncrement(nsIFrame* aFrame) override;
+
+protected:
+  explicit nsMathMLmmultiscriptsFrame(nsStyleContext* aContext) : nsMathMLContainerFrame(aContext) {}
+  virtual ~nsMathMLmmultiscriptsFrame();
+  
+
+};
+
+#endif /* nsMathMLmmultiscriptsFrame_h___ */