The Tor Browser: layout/mathml/nsMathMLmpaddedFrame.h@8bccb770b82d

     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/. */

     6 #ifndef nsMathMLmpaddedFrame_h___

     7 #define nsMathMLmpaddedFrame_h___

     9 #include "mozilla/Attributes.h"

    10 #include "nsMathMLContainerFrame.h"

    12 //

    13 // <mpadded> -- adjust space around content

    14 //

    16 class nsMathMLmpaddedFrame : public nsMathMLContainerFrame {

    17 public:

    18   NS_DECL_FRAMEARENA_HELPERS

    20   friend nsIFrame* NS_NewMathMLmpaddedFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);

    22   NS_IMETHOD

    23   InheritAutomaticData(nsIFrame* aParent) MOZ_OVERRIDE;

    25   NS_IMETHOD

    26   TransmitAutomaticData() MOZ_OVERRIDE {

    27     return TransmitAutomaticDataForMrowLikeElement();

    28   }

    30   virtual nsresult

    31   Reflow(nsPresContext*          aPresContext,

    32          nsHTMLReflowMetrics&     aDesiredSize,

    33          const nsHTMLReflowState& aReflowState,

    34          nsReflowStatus&          aStatus) MOZ_OVERRIDE;

    36   virtual nsresult

    37   Place(nsRenderingContext& aRenderingContext,

    38         bool                 aPlaceOrigin,

    39         nsHTMLReflowMetrics& aDesiredSize) MOZ_OVERRIDE;

    41   bool

    42   IsMrowLike() MOZ_OVERRIDE {

    43     return mFrames.FirstChild() != mFrames.LastChild() ||

    44            !mFrames.FirstChild();

    45   }

    47 protected:

    48   nsMathMLmpaddedFrame(nsStyleContext* aContext) : nsMathMLContainerFrame(aContext) {}

    49   virtual ~nsMathMLmpaddedFrame();

    51   virtual nsresult

    52   MeasureForWidth(nsRenderingContext& aRenderingContext,

    53                   nsHTMLReflowMetrics& aDesiredSize) MOZ_OVERRIDE;

    55 private:

    56   nsCSSValue mWidth;

    57   nsCSSValue mHeight;

    58   nsCSSValue mDepth;

    59   nsCSSValue mLeadingSpace;

    60   nsCSSValue mVerticalOffset;

    62   int32_t    mWidthSign;

    63   int32_t    mHeightSign;

    64   int32_t    mDepthSign;

    65   int32_t    mLeadingSpaceSign;

    66   int32_t    mVerticalOffsetSign;

    68   int32_t    mWidthPseudoUnit;

    69   int32_t    mHeightPseudoUnit;

    70   int32_t    mDepthPseudoUnit;

    71   int32_t    mLeadingSpacePseudoUnit;

    72   int32_t    mVerticalOffsetPseudoUnit;

    74   // helpers to process the attributes

    75   void

    76   ProcessAttributes();

    78   static bool

    79   ParseAttribute(nsString&   aString,

    80                  int32_t&    aSign,

    81                  nsCSSValue& aCSSValue,

    82                  int32_t&    aPseudoUnit);

    84   void

    85   UpdateValue(int32_t                  aSign,

    86               int32_t                  aPseudoUnit,

    87               const nsCSSValue&        aCSSValue,

    88               const nsHTMLReflowMetrics& aDesiredSize,

    89               nscoord&                 aValueToUpdate) const;

    90 };

    92 #endif /* nsMathMLmpaddedFrame_h___ */

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