/* static */ bool
nsMathMLElement::ParseNamedSpaceValue(const nsString& aString,
                                      nsCSSValue&     aCSSValue,
                                      uint32_t        aFlags)
{
   int32_t i = 0;
   // See if it is one of the 'namedspace' (ranging -7/18em, -6/18, ... 7/18em)
   if (aString.EqualsLiteral("veryverythinmathspace")) {
     i = 1;
   } else if (aString.EqualsLiteral("verythinmathspace")) {
     i = 2;
   } else if (aString.EqualsLiteral("thinmathspace")) {
     i = 3;
   } else if (aString.EqualsLiteral("mediummathspace")) {
     i = 4;
   } else if (aString.EqualsLiteral("thickmathspace")) {
     i = 5;
   } else if (aString.EqualsLiteral("verythickmathspace")) {
     i = 6;
   } else if (aString.EqualsLiteral("veryverythickmathspace")) {
     i = 7;
   } else if (aFlags & PARSE_ALLOW_NEGATIVE) {
     if (aString.EqualsLiteral("negativeveryverythinmathspace")) {
       i = -1;
     } else if (aString.EqualsLiteral("negativeverythinmathspace")) {
       i = -2;
     } else if (aString.EqualsLiteral("negativethinmathspace")) {
       i = -3;
     } else if (aString.EqualsLiteral("negativemediummathspace")) {
       i = -4;
     } else if (aString.EqualsLiteral("negativethickmathspace")) {
       i = -5;
     } else if (aString.EqualsLiteral("negativeverythickmathspace")) {
       i = -6;
     } else if (aString.EqualsLiteral("negativeveryverythickmathspace")) {
       i = -7;
     }
   }
   if (0 != i) { 
     aCSSValue.SetFloatValue(float(i)/float(18), eCSSUnit_EM);
     return true;
   }
   
   return false;
}

static nsresult
GetColor(nsPresContext* aPresContext, const nsMediaFeature*,
         nsCSSValue& aResult)
{
    // FIXME:  This implementation is bogus.  nsDeviceContext
    // doesn't provide reliable information (should be fixed in bug
    // 424386).
    // FIXME: On a monochrome device, return 0!
    nsDeviceContext *dx = GetDeviceContextFor(aPresContext);
    uint32_t depth;
    dx->GetDepth(depth);
    // The spec says to use bits *per color component*, so divide by 3,
    // and round down, since the spec says to use the smallest when the
    // color components differ.
    depth /= 3;
    aResult.SetIntValue(int32_t(depth), eCSSUnit_Integer);
    return NS_OK;
}

static nsresult
GetResolution(nsPresContext* aPresContext, const nsMediaFeature*,
              nsCSSValue& aResult)
{
    // Resolution measures device pixels per CSS (inch/cm/pixel).  We
    // return it in device pixels per CSS inches.
    //
    // However, on platforms where the CSS viewport is not fixed to the
    // screen viewport, use the device resolution instead (bug 779527).
    nsIPresShell *shell = aPresContext->PresShell();
    float appUnitsPerInch = shell->GetIsViewportOverridden() ?
            GetDeviceContextFor(aPresContext)->AppUnitsPerPhysicalInch() :
            nsPresContext::AppUnitsPerCSSInch();

    float dpi = appUnitsPerInch /
                float(aPresContext->AppUnitsPerDevPixel());
    aResult.SetFloatValue(dpi, eCSSUnit_Inch);
    return NS_OK;
}

void nsCSSValue::SetPairValue(const nsCSSValue& xValue,
                              const nsCSSValue& yValue)
{
  NS_ABORT_IF_FALSE(xValue.GetUnit() != eCSSUnit_Null &&
                    yValue.GetUnit() != eCSSUnit_Null &&
                    xValue.GetUnit() != eCSSUnit_Inherit &&
                    yValue.GetUnit() != eCSSUnit_Inherit &&
                    xValue.GetUnit() != eCSSUnit_Initial &&
                    yValue.GetUnit() != eCSSUnit_Initial,
                    "inappropriate pair value");
  Reset();
  mUnit = eCSSUnit_Pair;
  mValue.mPair = new nsCSSValuePair_heap(xValue, yValue);
  mValue.mPair->AddRef();
}

static void
GetColor(nsIDocument* aDocument, const nsMediaFeature*,
         nsCSSValue& aResult)
{
  // Use depth of 24 when resisting fingerprinting, or when we're not being
  // rendered.
  uint32_t depth = 24;

  if (!nsContentUtils::ShouldResistFingerprinting(aDocument)) {
    if (nsDeviceContext* dx = GetDeviceContextFor(aDocument)) {
      // FIXME: On a monochrome device, return 0!
      dx->GetDepth(depth);
    }
  }

  // The spec says to use bits *per color component*, so divide by 3,
  // and round down, since the spec says to use the smallest when the
  // color components differ.
  depth /= 3;
  aResult.SetIntValue(int32_t(depth), eCSSUnit_Integer);
}

static void
GetResolution(nsIDocument* aDocument, const nsMediaFeature*,
              nsCSSValue& aResult)
{
  // We're returning resolution in terms of device pixels per css pixel, since
  // that is the preferred unit for media queries of resolution. This avoids
  // introducing precision error from conversion to and from less-used
  // physical units like inches.

  float dppx = 1.;

  if (nsDeviceContext* dx = GetDeviceContextFor(aDocument)) {
    if (nsContentUtils::ShouldResistFingerprinting(aDocument)) {
      dppx = dx->GetFullZoom();
    } else {
      // Get the actual device pixel ratio, which also takes zoom into account.
      dppx =
        float(nsPresContext::AppUnitsPerCSSPixel()) / dx->AppUnitsPerDevPixel();
    }
  }

  aResult.SetFloatValue(dppx, eCSSUnit_Pixel);
}

/**
 * Tries to call |nsCSSValue::StartImageLoad()| on an image source.
 * Image sources are specified by |url()| or |-moz-image-rect()| function.
 */
static void
TryToStartImageLoadOnValue(const nsCSSValue& aValue, nsIDocument* aDocument)
{
  MOZ_ASSERT(aDocument);

  if (aValue.GetUnit() == eCSSUnit_URL) {
    aValue.StartImageLoad(aDocument);
  }
  else if (aValue.GetUnit() == eCSSUnit_Image) {
    // If we already have a request, see if this document needs to clone it.
    imgIRequest* request = aValue.GetImageValue(nullptr);

    if (request) {
      aDocument->StyleImageLoader()->MaybeRegisterCSSImage(aValue.GetImageStructValue());
    }
  }
  else if (aValue.EqualsFunction(eCSSKeyword__moz_image_rect)) {
    nsCSSValue::Array* arguments = aValue.GetArrayValue();
    NS_ABORT_IF_FALSE(arguments->Count() == 6, "unexpected num of arguments");

    const nsCSSValue& image = arguments->Item(1);
    TryToStartImageLoadOnValue(image, aDocument);
  }
}

// The REC says:
//
// "Most presentation elements have attributes that accept values representing
// lengths to be used for size, spacing or similar properties. The syntax of a
// length is specified as
//
// number | number unit | namedspace
//
// There should be no space between the number and the unit of a length."
// 
// "A trailing '%' represents a percent of the default value. The default
// value, or how it is obtained, is listed in the table of attributes for each
// element. [...] A number without a unit is intepreted as a multiple of the
// default value."
//
// "The possible units in MathML are:
//  
// Unit Description
// em   an em (font-relative unit traditionally used for horizontal lengths)
// ex   an ex (font-relative unit traditionally used for vertical lengths)
// px   pixels, or size of a pixel in the current display
// in   inches (1 inch = 2.54 centimeters)
// cm   centimeters
// mm   millimeters
// pt   points (1 point = 1/72 inch)
// pc   picas (1 pica = 12 points)
// %    percentage of default value"
//
// The numbers are defined that way:
// - unsigned-number: "a string of decimal digits with up to one decimal point
//   (U+002E), representing a non-negative terminating decimal number (a type of
//   rational number)"
// - number: "an optional prefix of '-' (U+002D), followed by an unsigned
//   number, representing a terminating decimal number (a type of rational
//   number)"
//
/* static */ bool
nsMathMLElement::ParseNumericValue(const nsString& aString,
                                   nsCSSValue&     aCSSValue,
                                   uint32_t        aFlags,
                                   nsIDocument*    aDocument)
{
  nsAutoString str(aString);
  str.CompressWhitespace(); // aString is const in this code...

  int32_t stringLength = str.Length();
  if (!stringLength) {
    if (!(aFlags & PARSE_SUPPRESS_WARNINGS)) {
      ReportLengthParseError(aString, aDocument);
    }
    return false;
  }

  if (ParseNamedSpaceValue(aString, aCSSValue, aFlags)) {
    return true;
  }

  nsAutoString number, unit;

  // see if the negative sign is there
  int32_t i = 0;
  PRUnichar c = str[0];
  if (c == '-') {
    number.Append(c);
    i++;
  }

  // Gather up characters that make up the number
  bool gotDot = false;
  for ( ; i < stringLength; i++) {
    c = str[i];
    if (gotDot && c == '.') {
      if (!(aFlags & PARSE_SUPPRESS_WARNINGS)) {
        ReportLengthParseError(aString, aDocument);
      }
      return false;  // two dots encountered
    }
    else if (c == '.')
      gotDot = true;
    else if (!nsCRT::IsAsciiDigit(c)) {
      str.Right(unit, stringLength - i);
      // some authors leave blanks before the unit, but that shouldn't
      // be allowed, so don't CompressWhitespace on 'unit'.
      break;
    }
    number.Append(c);
  }

  // Convert number to floating point
  nsresult errorCode;
  float floatValue = number.ToFloat(&errorCode);
  if (NS_FAILED(errorCode)) {
    if (!(aFlags & PARSE_SUPPRESS_WARNINGS)) {
      ReportLengthParseError(aString, aDocument);
    }
    return false;
  }
  if (floatValue < 0 && !(aFlags & PARSE_ALLOW_NEGATIVE)) {
    if (!(aFlags & PARSE_SUPPRESS_WARNINGS)) {
      ReportLengthParseError(aString, aDocument);
//.........这里部分代码省略.........

void
nsMathMLmpaddedFrame::UpdateValue(PRInt32                  aSign,
                                  PRInt32                  aPseudoUnit,
                                  const nsCSSValue&        aCSSValue,
                                  nscoord                  aLeftSpace,
                                  const nsBoundingMetrics& aBoundingMetrics,
                                  nscoord&                 aValueToUpdate) const
{
  nsCSSUnit unit = aCSSValue.GetUnit();
  if (NS_MATHML_SIGN_INVALID != aSign && eCSSUnit_Null != unit) {
    nscoord scaler = 0, amount = 0;

    if (eCSSUnit_Percent == unit || eCSSUnit_Number == unit) {
      switch(aPseudoUnit) {
        case NS_MATHML_PSEUDO_UNIT_WIDTH:
             scaler = aBoundingMetrics.width;
             break;

        case NS_MATHML_PSEUDO_UNIT_HEIGHT:
             scaler = aBoundingMetrics.ascent;
             break;

        case NS_MATHML_PSEUDO_UNIT_DEPTH:
             scaler = aBoundingMetrics.descent;
             break;

        case NS_MATHML_PSEUDO_UNIT_LSPACE:
             scaler = aLeftSpace;
             break;

        default:
          // if we ever reach here, it would mean something is wrong 
          // somewhere with the setup and/or the caller
          NS_ASSERTION(0, "Unexpected Pseudo Unit");
          return;
      }
    }

    if (eCSSUnit_Number == unit)
      amount = NSToCoordRound(float(scaler) * aCSSValue.GetFloatValue());
    else if (eCSSUnit_Percent == unit)
      amount = NSToCoordRound(float(scaler) * aCSSValue.GetPercentValue());
    else
      amount = CalcLength(PresContext(), mStyleContext, aCSSValue);

    nscoord oldValue = aValueToUpdate;
    if (NS_MATHML_SIGN_PLUS == aSign)
      aValueToUpdate += amount;
    else if (NS_MATHML_SIGN_MINUS == aSign)
      aValueToUpdate -= amount;
    else
      aValueToUpdate  = amount;

    /* The REC says:
    Dimensions that would be positive if the content was rendered normally
    cannot be made negative using <mpadded>; a positive dimension is set 
    to 0 if it would otherwise become negative. Dimensions which are 
    initially 0 can be made negative
    */
    if (0 < oldValue && 0 > aValueToUpdate)
      aValueToUpdate = 0;
  }
}

/* static */ PRBool
nsMathMLFrame::ParseNamedSpaceValue(nsIFrame*   aMathMLmstyleFrame,
                                    nsString&   aString,
                                    nsCSSValue& aCSSValue)
{
  aCSSValue.Reset();
  aString.CompressWhitespace(); //  aString is not a const in this code...
  if (!aString.Length()) return PR_FALSE;

  // See if it is one of the 'namedspace' (ranging 1/18em...7/18em)
  PRInt32 i = 0;
  nsIAtom* namedspaceAtom = nsnull;
  if (aString.EqualsLiteral("veryverythinmathspace")) {
    i = 1;
    namedspaceAtom = nsMathMLAtoms::veryverythinmathspace_;
  }
  else if (aString.EqualsLiteral("verythinmathspace")) {
    i = 2;
    namedspaceAtom = nsMathMLAtoms::verythinmathspace_;
  }
  else if (aString.EqualsLiteral("thinmathspace")) {
    i = 3;
    namedspaceAtom = nsMathMLAtoms::thinmathspace_;
  }
  else if (aString.EqualsLiteral("mediummathspace")) {
    i = 4;
    namedspaceAtom = nsMathMLAtoms::mediummathspace_;
  }
  else if (aString.EqualsLiteral("thickmathspace")) {
    i = 5;
    namedspaceAtom = nsMathMLAtoms::thickmathspace_;
  }
  else if (aString.EqualsLiteral("verythickmathspace")) {
    i = 6;
    namedspaceAtom = nsMathMLAtoms::verythickmathspace_;
  }
  else if (aString.EqualsLiteral("veryverythickmathspace")) {
    i = 7;
    namedspaceAtom = nsMathMLAtoms::veryverythickmathspace_;
  }

  if (0 != i) {
    if (aMathMLmstyleFrame) {
      // see if there is a <mstyle> that has overriden the default value
      // GetAttribute() will recurse all the way up into the <mstyle> hierarchy
      nsAutoString value;
      if (NS_CONTENT_ATTR_HAS_VALUE ==
          GetAttribute(nsnull, aMathMLmstyleFrame, namedspaceAtom, value)) {
        if (ParseNumericValue(value, aCSSValue) &&
            aCSSValue.IsLengthUnit()) {
          return PR_TRUE;
        }
      }
    }

    // fall back to the default value
    aCSSValue.SetFloatValue(float(i)/float(18), eCSSUnit_EM);
    return PR_TRUE;
  }

  return PR_FALSE;
}

/**
 * Tries to call |nsCSSValue::StartImageLoad()| on an image source.
 * Image sources are specified by |url()| or |-moz-image-rect()| function.
 */
static void
TryToStartImageLoadOnValue(const nsCSSValue& aValue, nsIDocument* aDocument,
                           nsStyleContext* aContext, nsCSSPropertyID aProperty,
                           bool aForTokenStream)
{
  MOZ_ASSERT(aDocument);

  if (aValue.GetUnit() == eCSSUnit_URL) {
#ifdef MOZ_ENABLE_MASK_AS_SHORTHAND
    // The 'mask-image' property accepts local reference URIs.
    // For example,
    //   mask-image: url(#mask_id); // refer to a SVG mask element, whose id is
    //                              // "mask_id", in the current document.
    // For such 'mask-image' values (pointing to an in-document element),
    // there is no need to trigger image download.
    if (aProperty == eCSSProperty_mask_image) {
      // Filter out all fragment URLs.
      // Since nsCSSValue::GetURLStructValue runs much faster than
      // nsIURI::EqualsExceptRef bellow, we get performance gain by this
      // early return.
      URLValue* urlValue = aValue.GetURLStructValue();
      if (urlValue->GetLocalURLFlag()) {
        return;
      }

      // Even though urlValue is not a fragment URL, it might still refer to
      // an internal resource.
      // For example, aDocument base URL is "http://foo/index.html" and
      // intentionally references a mask-image at
      // url(http://foo/index.html#mask) which still refers to a resource in
      // aDocument.
      nsIURI* imageURI = aValue.GetURLValue();
      if (imageURI) {
        nsIURI* docURI = aDocument->GetDocumentURI();
        bool isEqualExceptRef = false;
        nsresult  rv = imageURI->EqualsExceptRef(docURI, &isEqualExceptRef);
        if (NS_SUCCEEDED(rv) && isEqualExceptRef) {
          return;
        }
      }
    }
#endif
    aValue.StartImageLoad(aDocument);
    if (aForTokenStream && aContext) {
      CSSVariableImageTable::Add(aContext, aProperty,
                                 aValue.GetImageStructValue());
    }
  }
  else if (aValue.GetUnit() == eCSSUnit_Image) {
    // If we already have a request, see if this document needs to clone it.
    imgIRequest* request = aValue.GetImageValue(nullptr);

    if (request) {
      ImageValue* imageValue = aValue.GetImageStructValue();
      aDocument->StyleImageLoader()->MaybeRegisterCSSImage(imageValue);
      if (aForTokenStream && aContext) {
        CSSVariableImageTable::Add(aContext, aProperty, imageValue);
      }
    }
  }
  else if (aValue.EqualsFunction(eCSSKeyword__moz_image_rect)) {
    nsCSSValue::Array* arguments = aValue.GetArrayValue();
    MOZ_ASSERT(arguments->Count() == 6, "unexpected num of arguments");

    const nsCSSValue& image = arguments->Item(1);
    TryToStartImageLoadOnValue(image, aDocument, aContext, aProperty,
                               aForTokenStream);
  }
}

static void
GetIsGlyph(nsPresContext* aPresContext, const nsMediaFeature* aFeature,
          nsCSSValue& aResult)
{
  aResult.SetIntValue(aPresContext->IsGlyph() ? 1 : 0, eCSSUnit_Integer);
}

// parse an input string in the following format (see bug 148326 for testcases):
// [+|-] unsigned-number (% [pseudo-unit] | pseudo-unit | css-unit | namedspace)
bool
nsMathMLmpaddedFrame::ParseAttribute(nsString&   aString,
                                     int32_t&    aSign,
                                     nsCSSValue& aCSSValue,
                                     int32_t&    aPseudoUnit)
{
  aCSSValue.Reset();
  aSign = NS_MATHML_SIGN_INVALID;
  aPseudoUnit = NS_MATHML_PSEUDO_UNIT_UNSPECIFIED;
  aString.CompressWhitespace(); // aString is not a const in this code

  int32_t stringLength = aString.Length();
  if (!stringLength)
    return false;

  nsAutoString number, unit;

  //////////////////////
  // see if the sign is there

  int32_t i = 0;

  if (aString[0] == '+') {
    aSign = NS_MATHML_SIGN_PLUS;
    i++;
  }
  else if (aString[0] == '-') {
    aSign = NS_MATHML_SIGN_MINUS;
    i++;
  }
  else
    aSign = NS_MATHML_SIGN_UNSPECIFIED;

  // get the number
  bool gotDot = false, gotPercent = false;
  for (; i < stringLength; i++) {
    PRUnichar c = aString[i];
    if (gotDot && c == '.') {
      // error - two dots encountered
      aSign = NS_MATHML_SIGN_INVALID;
      return false;
    }

    if (c == '.')
      gotDot = true;
    else if (!nsCRT::IsAsciiDigit(c)) {
      break;
    }
    number.Append(c);
  }

  // catch error if we didn't enter the loop above... we could simply initialize
  // floatValue = 1, to cater for cases such as width="height", but that wouldn't
  // be in line with the spec which requires an explicit number
  if (number.IsEmpty()) {
    aSign = NS_MATHML_SIGN_INVALID;
    return false;
  }

  nsresult errorCode;
  float floatValue = number.ToFloat(&errorCode);
  if (NS_FAILED(errorCode)) {
    aSign = NS_MATHML_SIGN_INVALID;
    return false;
  }

  // see if this is a percentage-based value
  if (i < stringLength && aString[i] == '%') {
    i++;
    gotPercent = true;
  }

  // the remainder now should be a css-unit, or a pseudo-unit, or a named-space
  aString.Right(unit, stringLength - i);

  if (unit.IsEmpty()) {
    if (gotPercent) {
      // case ["+"|"-"] unsigned-number "%" 
      aCSSValue.SetPercentValue(floatValue / 100.0f);
      aPseudoUnit = NS_MATHML_PSEUDO_UNIT_ITSELF;
      return true;
    } else {
      // case ["+"|"-"] unsigned-number
      // XXXfredw: should we allow non-zero unitless values? See bug 757703.
      if (!floatValue) {
        aCSSValue.SetFloatValue(floatValue, eCSSUnit_Number);
        aPseudoUnit = NS_MATHML_PSEUDO_UNIT_ITSELF;
        return true;
      }
    }
  }
  else if (unit.EqualsLiteral("width"))  aPseudoUnit = NS_MATHML_PSEUDO_UNIT_WIDTH;
  else if (unit.EqualsLiteral("height")) aPseudoUnit = NS_MATHML_PSEUDO_UNIT_HEIGHT;
  else if (unit.EqualsLiteral("depth"))  aPseudoUnit = NS_MATHML_PSEUDO_UNIT_DEPTH;
  else if (!gotPercent) { // percentage can only apply to a pseudo-unit

    // see if the unit is a named-space
    if (nsMathMLElement::ParseNamedSpaceValue(unit, aCSSValue,
//.........这里部分代码省略.........

/* static */ PRBool
nsMathMLElement::ParseNumericValue(const nsString& aString,
                                   nsCSSValue&     aCSSValue,
                                   PRUint32        aFlags)
{
  nsAutoString str(aString);
  str.CompressWhitespace(); // aString is const in this code...

  PRInt32 stringLength = str.Length();
  if (!stringLength)
    return PR_FALSE;

  nsAutoString number, unit;

  // see if the negative sign is there
  PRInt32 i = 0;
  PRUnichar c = str[0];
  if (c == '-') {
    number.Append(c);
    i++;

    // skip any space after the negative sign
    if (i < stringLength && nsCRT::IsAsciiSpace(str[i]))
      i++;
  }

  // Gather up characters that make up the number
  PRBool gotDot = PR_FALSE;
  for ( ; i < stringLength; i++) {
    c = str[i];
    if (gotDot && c == '.')
      return PR_FALSE;  // two dots encountered
    else if (c == '.')
      gotDot = PR_TRUE;
    else if (!nsCRT::IsAsciiDigit(c)) {
      str.Right(unit, stringLength - i);
      // some authors leave blanks before the unit, but that shouldn't
      // be allowed, so don't CompressWhitespace on 'unit'.
      break;
    }
    number.Append(c);
  }

  // Convert number to floating point
  PRInt32 errorCode;
  float floatValue = number.ToFloat(&errorCode);
  if (NS_FAILED(errorCode))
    return PR_FALSE;
  if (floatValue < 0 && !(aFlags & PARSE_ALLOW_NEGATIVE))
    return PR_FALSE;

  nsCSSUnit cssUnit;
  if (unit.IsEmpty()) {
    if (aFlags & PARSE_ALLOW_UNITLESS) {
      // no explicit unit, this is a number that will act as a multiplier
      cssUnit = eCSSUnit_Number;
    } else {
      // We are supposed to have a unit, but there isn't one.
      // If the value is 0 we can just call it "pixels" otherwise
      // this is illegal.
      if (floatValue != 0.0)
        return PR_FALSE;
      cssUnit = eCSSUnit_Pixel;
    }
  }
  else if (unit.EqualsLiteral("%")) {
    aCSSValue.SetPercentValue(floatValue / 100.0f);
    return PR_TRUE;
  }
  else if (unit.EqualsLiteral("em")) cssUnit = eCSSUnit_EM;
  else if (unit.EqualsLiteral("ex")) cssUnit = eCSSUnit_XHeight;
  else if (unit.EqualsLiteral("px")) cssUnit = eCSSUnit_Pixel;
  else if (unit.EqualsLiteral("in")) cssUnit = eCSSUnit_Inch;
  else if (unit.EqualsLiteral("cm")) cssUnit = eCSSUnit_Centimeter;
  else if (unit.EqualsLiteral("mm")) cssUnit = eCSSUnit_Millimeter;
  else if (unit.EqualsLiteral("pt")) cssUnit = eCSSUnit_Point;
  else if (unit.EqualsLiteral("pc")) cssUnit = eCSSUnit_Pica;
  else // unexpected unit
    return PR_FALSE;

  aCSSValue.SetFloatValue(floatValue, cssUnit);
  return PR_TRUE;
}

static void
GetIsResourceDocument(nsIDocument* aDocument, const nsMediaFeature*,
                      nsCSSValue& aResult)
{
  aResult.SetIntValue(aDocument->IsResourceDoc() ? 1 : 0, eCSSUnit_Integer);
}