nsMathMLmmultiscriptsFrame.h

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/* -*- 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/. */

#ifndef nsMathMLmmultiscriptsFrame_h___

#define nsMathMLmmultiscriptsFrame_h___

#include "mozilla/Attributes.h"

#include "nsMathMLContainerFrame.h"

namespace mozilla {

class PresShell;

}  // namespace mozilla

//

// <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 final : public nsMathMLContainerFrame {

 public:

  NS_DECL_FRAMEARENA_HELPERS(nsMathMLmmultiscriptsFrame)

  friend nsIFrame* NS_NewMathMLmmultiscriptsFrame(

      mozilla::PresShell* aPresShell, ComputedStyle* aStyle);

  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(ComputedStyle* aStyle,

                                      nsPresContext* aPresContext)

      : nsMathMLContainerFrame(aStyle, aPresContext, kClassID) {}

  virtual ~nsMathMLmmultiscriptsFrame();

};

#endif /* nsMathMLmmultiscriptsFrame_h___ */