author Jonathan Kew <>
Thu, 24 Jul 2014 18:03:26 +0100
changeset 218927 ea66ed3c2ca1b20220a586c563bfd4fd62a61bb6
parent 205771 e7cd2558a8214320282feb727a4df3b4c3133c23
child 225756 9d4e083655b993f73ba3eca84e0f14cdd270bcda
permissions -rw-r--r--
bug 1031241 pt 3 - Also rename Intrinsic{Width,Height} to Intrinsic{I,B}Size. r=smontagu

/* -*- 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 */

#ifndef nsMathMLmoFrame_h___
#define nsMathMLmoFrame_h___

#include "mozilla/Attributes.h"
#include "nsMathMLTokenFrame.h"
#include "nsMathMLChar.h"

// <mo> -- operator, fence, or separator

class nsMathMLmoFrame : public nsMathMLTokenFrame {

  friend nsIFrame* NS_NewMathMLmoFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);

  virtual eMathMLFrameType GetMathMLFrameType() MOZ_OVERRIDE;

  virtual void
  SetAdditionalStyleContext(int32_t          aIndex, 
                            nsStyleContext*  aStyleContext) MOZ_OVERRIDE;
  virtual nsStyleContext*
  GetAdditionalStyleContext(int32_t aIndex) const MOZ_OVERRIDE;

  virtual void BuildDisplayList(nsDisplayListBuilder*   aBuilder,
                                const nsRect&           aDirtyRect,
                                const nsDisplayListSet& aLists) MOZ_OVERRIDE;

  InheritAutomaticData(nsIFrame* aParent) MOZ_OVERRIDE;

  TransmitAutomaticData() MOZ_OVERRIDE;

  virtual void
  SetInitialChildList(ChildListID     aListID,
                      nsFrameList&    aChildList) MOZ_OVERRIDE;

  virtual void
  Reflow(nsPresContext*          aPresContext,
         nsHTMLReflowMetrics&     aDesiredSize,
         const nsHTMLReflowState& aReflowState,
         nsReflowStatus&          aStatus) MOZ_OVERRIDE;

  virtual void MarkIntrinsicISizesDirty() MOZ_OVERRIDE;

  virtual void
  GetIntrinsicISizeMetrics(nsRenderingContext* aRenderingContext,
                           nsHTMLReflowMetrics& aDesiredSize) MOZ_OVERRIDE;

  virtual nsresult
  AttributeChanged(int32_t         aNameSpaceID,
                   nsIAtom*        aAttribute,
                   int32_t         aModType) MOZ_OVERRIDE;

  // This method is called by the parent frame to ask <mo> 
  // to stretch itself.
  Stretch(nsRenderingContext& aRenderingContext,
          nsStretchDirection   aStretchDirection,
          nsBoundingMetrics&   aContainerSize,
          nsHTMLReflowMetrics& aDesiredStretchSize) MOZ_OVERRIDE;

  virtual nsresult
  ChildListChanged(int32_t aModType) MOZ_OVERRIDE
    return nsMathMLContainerFrame::ChildListChanged(aModType);

  nsMathMLmoFrame(nsStyleContext* aContext) : nsMathMLTokenFrame(aContext) {}
  virtual ~nsMathMLmoFrame();
  nsMathMLChar     mMathMLChar; // Here is the MathMLChar that will deal with the operator.
  nsOperatorFlags  mFlags;
  float            mMinSize;
  float            mMaxSize;

  bool UseMathMLChar();

  // overload the base method so that we can setup our nsMathMLChar
  void ProcessTextData();

  // helper to get our 'form' and lookup in the Operator Dictionary to fetch 
  // our default data that may come from there, and to complete the setup
  // using attributes that we may have

  // helper to double check thar our char should be rendered as a selected char
  IsFrameInSelection(nsIFrame* aFrame);

#endif /* nsMathMLmoFrame_h___ */