Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* This Source Code Form is subject to the terms of the Mozilla Public
       3             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       4             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       5             : 
       6             : #ifndef nsMathMLmoFrame_h___
       7             : #define nsMathMLmoFrame_h___
       8             : 
       9             : #include "mozilla/Attributes.h"
      10             : #include "nsMathMLTokenFrame.h"
      11             : #include "nsMathMLChar.h"
      12             : 
      13             : //
      14             : // <mo> -- operator, fence, or separator
      15             : //
      16             : 
      17             : class nsMathMLmoFrame : public nsMathMLTokenFrame {
      18             : public:
      19           0 :   NS_DECL_FRAMEARENA_HELPERS(nsMathMLmoFrame)
      20             : 
      21             :   friend nsIFrame* NS_NewMathMLmoFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
      22             : 
      23             :   virtual eMathMLFrameType GetMathMLFrameType() override;
      24             : 
      25             :   virtual void
      26             :   SetAdditionalStyleContext(int32_t          aIndex,
      27             :                             nsStyleContext*  aStyleContext) override;
      28             :   virtual nsStyleContext*
      29             :   GetAdditionalStyleContext(int32_t aIndex) const override;
      30             : 
      31             :   virtual void BuildDisplayList(nsDisplayListBuilder*   aBuilder,
      32             :                                 const nsRect&           aDirtyRect,
      33             :                                 const nsDisplayListSet& aLists) override;
      34             : 
      35             :   NS_IMETHOD
      36             :   InheritAutomaticData(nsIFrame* aParent) override;
      37             : 
      38             :   NS_IMETHOD
      39             :   TransmitAutomaticData() override;
      40             : 
      41             :   virtual void
      42             :   SetInitialChildList(ChildListID     aListID,
      43             :                       nsFrameList&    aChildList) override;
      44             : 
      45             :   virtual void
      46             :   Reflow(nsPresContext*          aPresContext,
      47             :          ReflowOutput&     aDesiredSize,
      48             :          const ReflowInput& aReflowInput,
      49             :          nsReflowStatus&          aStatus) override;
      50             : 
      51             :   virtual nsresult
      52             :   Place(DrawTarget*          aDrawTarget,
      53             :         bool                 aPlaceOrigin,
      54             :         ReflowOutput& aDesiredSize) override;
      55             : 
      56             :   virtual void MarkIntrinsicISizesDirty() override;
      57             : 
      58             :   virtual void
      59             :   GetIntrinsicISizeMetrics(gfxContext* aRenderingContext,
      60             :                            ReflowOutput& aDesiredSize) override;
      61             : 
      62             :   virtual nsresult
      63             :   AttributeChanged(int32_t         aNameSpaceID,
      64             :                    nsIAtom*        aAttribute,
      65             :                    int32_t         aModType) override;
      66             : 
      67             :   // This method is called by the parent frame to ask <mo>
      68             :   // to stretch itself.
      69             :   NS_IMETHOD
      70             :   Stretch(DrawTarget*          aDrawTarget,
      71             :           nsStretchDirection   aStretchDirection,
      72             :           nsBoundingMetrics&   aContainerSize,
      73             :           ReflowOutput& aDesiredStretchSize) override;
      74             : 
      75             :   virtual nsresult
      76           0 :   ChildListChanged(int32_t aModType) override
      77             :   {
      78           0 :     ProcessTextData();
      79           0 :     return nsMathMLContainerFrame::ChildListChanged(aModType);
      80             :   }
      81             : 
      82             : protected:
      83           0 :   explicit nsMathMLmoFrame(nsStyleContext* aContext) :
      84           0 :     nsMathMLTokenFrame(aContext, kClassID), mFlags(0), mMinSize(0), mMaxSize(0) {}
      85             :   virtual ~nsMathMLmoFrame();
      86             : 
      87             :   nsMathMLChar     mMathMLChar; // Here is the MathMLChar that will deal with the operator.
      88             :   nsOperatorFlags  mFlags;
      89             :   float            mMinSize;
      90             :   float            mMaxSize;
      91             : 
      92             :   bool UseMathMLChar();
      93             : 
      94             :   // overload the base method so that we can setup our nsMathMLChar
      95             :   void ProcessTextData();
      96             : 
      97             :   // helper to get our 'form' and lookup in the Operator Dictionary to fetch
      98             :   // our default data that may come from there, and to complete the setup
      99             :   // using attributes that we may have
     100             :   void
     101             :   ProcessOperatorData();
     102             : 
     103             :   // helper to double check thar our char should be rendered as a selected char
     104             :   bool
     105             :   IsFrameInSelection(nsIFrame* aFrame);
     106             : };
     107             : 
     108             : #endif /* nsMathMLmoFrame_h___ */